299 results about "Spherical recess" patented technology

A nonslip walking stick rest disposed at a lower end of a walking stick, is characterized that, the walking stick rest is provided with a pliable plastic tray having a nonslip surface at a lower housing; the lower housing has a spherical recess provided with a shaft having a sphere at an interior thereof above the lower housing is a fixed middle housing; the shaft is provided with an upper housing; a spring is disposed at the upper portion of the shaft, and between the upper housing and the middle housing; and the upper housing has an insertion end for inserting to the lower end of the walking stick. When the walking stick is propped on the ground, the lower housing of the walking stick rest is capable of automatic adaptations for staying closely to the ground and preventing slipping.

A breathing mask has a mask body, a mounting bracket and a universal connecting tube. The mask body has a first universal socket bracket having a first spherical recess. The mounting bracket is mounted on the mask body and has a second universal socket bracket having a second spherical recess. The universal connecting tube is mounted universally pivotally in the mask body and has a ball joint mounted universally rotatably in the first and second spherical recesses. The universally rotating ball joint allows a breathing tube connected to the universal connecting tube to pivot to any orientations and prevents the breathing tube from over bending.

A golf putter, ball retriever and retainer configured to retrieve and hold a golf ball. The putter defines a substantially symmetrical configuration from heel to toe. The ball retriever and retainer is defined by a spherical recess formed in the sole of the putter and an opening defined on the top surface thereof. The spherical recess is further defined by an opening on the sole of the putter, the sole opening defining a diameter slightly less than the diameter of a conventional golf ball. In order to receive a golf ball into the ball retriever and retainer, at least one resilient tab is defined in the sole to enlarge the sole opening. The top surface of the putter defines a shaft retriever proximate the trailing edge for engaging a golf club shaft or flag for lifting the same from the ground.

A golf putter, ball retriever and retainer configured to retrieve and hold a golf ball. The putter defines a substantially symmetrical configuration from heel to toe. The ball retriever and retainer is defined by a spherical recess formed in the sole of the putter and an opening defined on the top surface thereof. At least one resilient tab is defined in the sole to enlarge the sole opening. Ball alignment indicia are disposed on the top surface of the golf putter head, the ball alignment indicia defining at least a C-shaped configuration, whereby a ball is visually aligned between said first and second ends to center the ball on said striking face. The ball alignment indicia may further include at least one line segment disposed coincidentally to the initial direction of travel of the golf ball.

A cap with a suction unit includes a cap having a semi-spherical recess defined in a top thereof and communicating with an outlet defined through an inner end of the semi-spherical recess. A first air hole is defined through an inner periphery of the semi-spherical recess. A suction member has a spherical base, which is rotatably engaged with the semi-spherical recess, and a tube extends from the spherical base. A passage is defined through the spherical base and the tube. A second air hole is defined through the spherical base. The passage and the second air hole are respectively in communication with the outlet and the first hole when the suction member is pivoted to a first position, and the passage and the second air hole are respectively not in communication with the outlet and the air hole when the suction member is pivoted to a second position.

The invention relates to a notebook computer and a multi-directional bracket thereof. The notebook computer comprises a display screen, the multi-directional bracket and a camera, wherein the display screen is provided with a containing groove; the multi-directional bracket is contained in the containing groove or bent out of the containing groove and comprises a first rod body, a second rod body, a spherical bulge and a spherical recess, wherein the spherical bulge is arranged on one end of the first rod body, the spherical recess is arranged on one end of the second rod body, and the spherical bulge is embedded into the spherical recess and rotates in the spherical recess so that the first rod body is bent relative to the second rod body; and the camera is arranged at the tail end of the multi-directional bracket.

A nutating pump for creating pressure or a vacuum. The nutating pump includes a housing with a center support positioned within said housing. The center support includes a semi-spherical recess. The pump also includes a drive shaft adapted to be connected to an electric motor and an eccentric adapted to be connected to the drive shaft. The pump further includes a ball adapted to form a ball joint and is adapted to be positioned within the semi-spherical recess of said center support. In addition the pump includes a nutating yoke positioned within the housing. The yoke includes a semi-spherical recess adapted to accept said pivot ball. The nutating yoke is adapted to be connected to the eccentric, such that rotation of the eccentric causes the yoke to move about the ball. The pump also includes a connecting rod connected to the yoke, a piston connected to the connecting rod and a cylinder adapted to accept the piston, wherein the movement of the yoke about the ball causes the piston to reciprocate within the cylinder.

A speaker housing assembly including an adapter and a speaker enclosure is disclosed. The adapter has an escutcheon and a partially spherical recessed concave portion. The speaker enclosure has a partially spherical sidewall that is received in the recessed concave portion of the adapter. A lock assembly secures the speaker enclosure to the adapter through an arcuate slot. Flanges of the lock assembly are placed in registry with teeth formed on opposite sides of the arcuate slot to lock the speaker enclosure in place. An elastomeric pad is provided between the recessed concave portion and the partially spherical sidewall to dampen vibrations and supplement the locking engagement of the lock assembly.

The invention relates to the field of building structures and discloses a multi-defensive line anti-seismic self-restoration assembly type frame-swinging wall energy consumption structure which comprises frame structure bodies and swinging wall structure bodies. The frame structure bodies are hinged to swinging wall bodies. The bottoms of the swinging wall bodies are hinged to a foundation. The frame structure bodies are provided with a plurality of controllable plastic hinge joints which comprise column end short beam sections connected with concrete columns in a pouring mode and main beam built-in fittings connected with a main beam in a pouring mode. The ends of the column end short beam sections are spherical grooves, ant the ends of the main beam built-in fittings are universal balls which are matched with the spherical grooves to enable the main beam built-in fittings and the column end short beam sections to be connected in a hinged mode. The two sides of the swinging wall bodies are provided with pre-stressed ribs. One ends of the pre-stressed ribs are fixedly connected to the foundation, and the other ends of the pre-stressed ribs are anchored to swinging walls. According to the multi-defensive line anti-seismic self-restoration assembly type frame-swinging wall energy consumption structure, the problems that existing buildings are centralized in damage, and frame-swinging wall structures are overlarge in horizontal displacement peak and residual deformation and deform due to vibration are effectively solved through three defensive lines.

A hollow piston drive mechanism for a hammer drill comprises a crank pin 54 having a cylindrical link member 68 rigidly connected to a part-spherical bearing 70. The part-spherical bearing 70 is slidably and rotatably disposed in a part-spherical recess 72 formed in the crank plate 52, as a result of which the bearing 70 can be easily mounted to the recess 72. The cylindrical link member 68 is slidably disposed in a cylindrical bearing 56 formed in the end of the hollow piston 58. The crank pin 54 is therefore able to rock back and forth in the spherical recess 72 as well as slide up and down in the cylindrical bearing 56. A cylindrical collar member 74 is mounted on the cylindrical link member 68 of the crank pin 54 and is moveable between a lower position in which it abuts the upper surface of the part-spherical bearing 70 and an upper position in which it abuts and the underside of the cylindrical bearing 56 so that the crank pin 54 is prevented from moving out of engagement with the part-spherical recess 72 formed in crank plate 52. The cylindrical collar member 74 can be mounted to the crank pin 54 after construction of the crank plate 52 and crank pin 54 assembly.

A coupling device for connecting a bicycle rack to a hitch ball includes a casing and a pivotal frame which is pivotally connected to the casing and the hitch ball can be clamped within a spherical recess between the casing and the pivotal frame. A push plate is located in the casing and the pivotal frame includes a limiting member to which the push plate is in contact therewith. The push plate has an inclined surface so that the limiting member together with the pivotal frame are pushed toward the hitch ball by moving the push plate to further secure the connection of the hitch ball, the casing and the pivotal frame. The pivotal frame can be pivoted to allow the hitch ball to be removed from the spherical recess.

A spherical bearing is disclosed, which is easy to make, can be made small, and does not have a sticking problem of a spherical block. The spherical bearing includes a plastic spherical block made of plastic and including a convex spherical surface, a spherical groove member including a spherical groove with which the convex spherical surface engages and surface-contacts and allowing rotation with respect to the plastic spherical block, and a weight-delivering member installed opposite to the spherical groove member with the plastic spherical block in the middle, and wherein a frictional surface of the plastic spherical block rubbing against the spherical groove member or the weight-delivering member is made of engineering plastic such as PA, POM etc. having a hardness of 75D through 95D.

An attachment structure and ceramic matrix composite liner combination for a gas turbine engine has a ceramic matrix composite liner including plural flanges extending away from a face of said liner. The flanges have an opening and a bracket secured to the flanges by a securement member extending through the opening in the flange, and through an opening in the bracket. The flanges are secured to the securement member through at least one washer having a spherical face facing a spherical recess in the flanges.

A ball hitting practice device includes a base member having a reception portion on a top thereof and a spherical recess is defined in an underside of the reception portion. A passage is defined through the reception portion and communicates with the spherical recess. A post can be a single post or composed of multiple sections. The post has a base part at a lower end thereof and a cup is connected to a top of the post. The base part is matched with the spherical recess and a diameter of the post is smaller than an inner diameter of the passage. The post extends through the passage and a top of the base part is in contact with an inner surface of the spherical recess. A positioning cap is fixed to the underside of the base member so as to position the base part. A ball is put on the cup and the user hits the ball to practice hitting skills.

The invention relates to a spent fuel storage rack and in particular discloses a spent fuel storage rack in a pressurized water reactor nuclear power station. The storage rack comprises four enclosing plates, an upper bearing plate positioned at the tops of the enclosing plates, and a lower bearing plate and a storage sleeve which are positioned at the bottoms of the enclosing plates, wherein the enclosing plates, the upper bearing plate and the lower bearing plate form a cubic cavity; the storage sleeve is positioned in the square holes on the upper bearing plate and the lower bearing plate; base plates of the storage sleeve are positioned on the lower bearing plate; legs are fixedly connected with the lower bearing plate; thread sleeves on the legs are welded with the lower bearing plate; cylindrical convex plates are arranged at the bottoms of the thread sleeves; the upper ends of the thread sleeves are fastened with the lower bearing plate and the base plates by nuts; adjusting screws are arranged in and in threaded connection with the thread sleeves; the bottoms of the adjusting screws are freely positioned in the spherical recesses of bottom backing plates; and the base plates are provided with through holes communicated with the inside of the storage sleeve and the through holes are communicated with the through holes on the bearing plates. The storage rack has high storage capacity and good shock resistance.

An improved shock damper for building is composed of bottom base, top carrier, sliding groove consisting of upper and lower slide block and spherical receptor, and springs for connecting bottom base with top carrier. An arc recess is respectively made on the bottom surface of top carrier and top surface of bottom base for recepting upper and lower slide blocks which have a semi-spherical recess for containing the said spherical receptor. Its advantages are high shock damping effect, simple structure and low cost.

A golf putter, ball retriever and retainer configured to retrieve and hold a golf ball. The putter defines a substantially symmetrical configuration from heel to toe. The ball retriever and retainer is defined by a spherical recess formed in the sole of the putter and an opening defined on the top surface thereof. At least one resilient tab is defined in the sole to enlarge the sole opening. Ball alignment indicia are disposed on the top surface of the golf putter head, the ball alignment indicia defining at least a C-shaped configuration, whereby a ball is visually aligned between said first and second ends to center the ball on said striking face. The ball alignment indicia may further include at least one line segment disposed coincidentally to the initial direction of travel of the golf ball.

A plurality of pinion gears 4A, 4B which are rotatably held within a differential case 2, and a pair of left and right side gears 6L, 6R which are in meshing engagement with the pinion gears 4A, 4B and connected to left and right axles are provided. A ring 18A is fitted around the pinion gears 4A, 4B to prevent the pinion gears 4A, 4B from being withdrawn. The ring 18A has an inner peripheral surface in which a spherical recess 18Aa centered about a point of intersection between an axis of rotation of the side gears 6L, 6R and an axis of rotation of the pinion gears 4A, 4B is formed while an end of the pinion gears 4A, 4B which is disposed toward the outer periphery is formed with a spherical projection 4Ac having a similar curvature as the recess in the ring 18A.

A ball joint, which has high reliability and reduced weight, is provided. A ball joint includes: a ball stud having a columnar stud portion and a ball portion which has a spherical side surface and a center positioned on an axis of the stud portion; a ball seat which is made of a resin and has a spherical recess portion into which the ball portion is relatively rotatably and slidably fitted; a housing which is made of a resin and holds the ball seat therein; and a support bar which is integrally formed with the housing, wherein the support bar has a bar portion which is a center portion extending along an axis of the support bar.

An electrothermal actuator producing linear and / or rotational movement includes a housing having a longitudinal axis. A chamber within the housing contains a working fluid that changes phase upon heating. A piston is slidably disposed within the housing and movable along the longitudinal axis between first and second positions. A spring biases the piston toward the first position. The piston slides from the first position to the second position in response to heating of the working fluid. The piston includes a piston rod extending along the longitudinal axis and protruding from the housing. The housing includes helical grooves on an interior surface and the piston includes partially spherical recesses. Balls captured between the grooves and recesses produce rotation of the piston and piston rod when the piston moves between the first and second positions.

A breathing mask has a mask body, a mounting bracket and a universal connecting tube. The mask body has a first universal socket bracket having a first spherical recess. The mounting bracket is mounted on the mask body and has a second universal socket bracket having a second spherical recess. The universal connecting tube is mounted universally pivotally in the mask body and has a ball joint mounted universally rotatably in the first and second spherical recesses. The universally rotating ball joint allows a breathing tube connected to the universal connecting tube to pivot to any orientations and prevents the breathing tube from over bending.

The invention discloses a measuring scale and a measuring method for an automatically-centralized level gauge. The measuring scale comprises a base, a levelling scale arranged on the base and a level for measuring the verticality of the levelling scale, wherein the levelling scale is located above the base, and the bottom of the levelling scale is arranged on the base through a spherical hinge; a spherical hinge head is arranged at the bottom of the levelling scale and is located in the middle of the inner side of the base; the upper part of the base is provided with a spherical groove in which the spherical hinge head is clamped; the spherical hinge head and the base are locked and fixed by a locking piece. The measuring method comprises the following steps: 1, mounting the measuring scale, to be specific, respectively mounting a measuring scale on a known elevation point A and a point B to be measured according to the following processes: placing the measuring scales, adjusting the verticality of the levelling scale and locking and fixing the levelling scale; 2, mounting the level, to be specific, erecting the level between the two measuring scales; 3, carrying out level measurement. The measuring scale and the measuring method disclosed by the invention are reasonable in design, simple and convenient to operate, good in use effect and capable of effectively improving the efficiency and the precision of the level measurement.

A ball latch 46 is reciprocally mounted in a latch slot 44 and is biased downwardly by coil compression spring 68 until the semi-spherical recess at its lower end becomes coextensive with the spherical surface of the ball socket 36. When the trailer hitch 16 is placed on the hitch ball 26, the force applied by the hitch ball against the ball latch 46 moves the ball latch upwardly against the bias of its spring 68 to make room for the hitch ball to enter the ball socket 36. Once the hitch ball is fully inserted in the ball socket 36, the spring 68 pushes the ball latch 46 back to its locked position about the hitch ball.

Disclosed herein is a door stop pin assembly including a pin and a base pad. The pin has a concave spherical recess. And, the base pad has an open end and a closed end such that the open end has a convex spherical portion in contact with the concave spherical recess.

The present invention provides a light guide plate and a manufacturing method thereof. The manufacturing method firstly forms a plurality of spherical recesses arranged at intervals on a light-emitting surface of a light guide plate body when the light guide plate body is formed by pressing, and then applies a diffuser particle with corresponding shape on a surface of each of the spherical recesses, so as to complete the manufacture of the light guide plate. When being mounted in a backlight module, the light guide plate benefits the backlight module of reducing the use of diffuser films, so as to reduce the thickness and weight of the backlight module.

A variable friction-type spherical surface-cylindrical surface friction-type support relates to a friction-type support, which is designed to solve the problems that resonance is produced by a structure and that structural seismic response is increased due to rigidity and constant damping of the existing friction pendulum support, wherein a slide groove is mounted on an upper end face of a connection steel plate; a slide block is located inside the slide groove; an upper portion of the slide block is a hemisphere shape; a hemisphere recess cooperated with the slide block is processed in the middle position of a lower end of an end cover; the end cover is supported on an upper end face of the slide groove through the slide block; an outline of the left half portion of the slide groove is shaped as a rectangle and the outline of the right half portion of the slide groove is shaped as a semicircle; a cylindrical groove is processed on the left half portion of the slide groove; a spherical recess is processed on the right half portion of the slide groove; a cambered surface radius of the cylindrical recess is set in a same way with the cambered surface radius of the spherical recess; the cylindrical recess and the spherical recess are connected in a smooth transitional way to form a complete slide surface; the upper end face of the slide groove is divided with at least two concentric circles in order from the center to the outside; and the friction coefficient at the concentric circle position from inside to outside is sequentially increased. The variable friction-type spherical surface-cylindrical surface friction-type support is used for vibration insulation for a large-span space structure.

A ball latch 46 is reciprocally mounted in a latch slot 44 and is biased downwardly by coil compression spring 68 until the semi-spherical recess at its lower end becomes coextensive with the spherical surface of the ball socket 36. When the trailer hitch 16 is placed on the hitch ball 26, the force applied by the hitch ball against the ball latch 46 moves the ball latch upwardly against the bias of its spring 68 to make room for the hitch ball to enter the ball socket 36. Once the hitch ball is fully inserted in the ball socket 36, the spring 68 pushes the ball latch 46 back to its locked position about the hitch ball.

A turbine blade locking device for axial retention of a turbine blade (1) having a blade root (3) inserted in an axially extending profiled lobe slot (5) of a turbine disk (4), wherein, a sealing fin of a blade platform (10) includes, over part of its axial length, a retaining groove (6) featuring a semicircular cross-section, a disk lobe (7) of the turbine disk (4) is provided with a semi-spherical recess (8), and a ball (2) is fitted into the recess (8) and the retaining groove (6).

The invention discloses a deepwater simulating high pressure cabin. The deepwater simulating high pressure cabin comprises an end socket positioned on the lower end of the deepwater simulating high pressure cabin, an end part positioned on the upper end of the deepwater simulating high pressure cabin and a cylinder body positioned between the end socket and the end part, wherein the end socket is used for being arranged on a skirt base; the skirt base is provided with a hemispheric groove, the end socket is arranged in the groove, and the diameter of the end part is greater than that of the cylinder body. The deepwater simulating high pressure cabin is characterized in that the end socket in the high pressure cabin is arranged on the skirt base, and the installation of the high pressure cabin is stable and reliable.