71results about How to "Positive engagement" patented technology

A tilt adjustment assembly for a motorized reclining chair having a base frame adapted for rest on a floor surface. A seat and a back articulated support linkage are interconnected together for displacement of a seat and back of a reclining chair. An intermediate frame is mounted on the base frame through spring attachments, whereby to impart a rocking motion to the chair. A pair of foot rest linkages interconnect each of two of the said seat articulated support linkages to a foot rest plate. The tilt adjustment assembly comprises a motor-operated actuating rod secured at a free end to a sliding member to guidingly displace that member along a straight axis in a fixed plane and to any desired position along the axis. A pivotal link arm is pivotally secured at one end of the sliding member. A transverse linkage securing rod is secured to a second end of the pivotal link arm and extends transversely thereto. The transverse securing rod has opposed ends pivotally connected to an intermediate link arm of a respective one of the pair of foot rest linkages. Tensioning springs are secured to each of the pair of foot rest linkages for applying a restoring force to the foot rest to a retracted position.

A system and method for constructing and using modular building blocks. The blocks may include two walls, a course, end conditions, a reinforcing assembly, and vertical and lateral retaining members. The walls may include lateral supports disposed lengthwise on a top and a bottom surface. Lateral retainer members may be disposed into the lateral supports. The walls may also include channels extending from the top surface to the bottom surface. Vertical retainer members may be disposed into the channels. The course may be disposed between and coupled to the walls and characterized by one or more turns. The reinforcing assembly may be set inside the walls and the course. The reinforcing assembly may include wire mesh portions disposed to form interlocks, where the interlocks provide structural support for the channels. The modular building blocks may be coupled together with structurally complimentary end conditions.

A coupling assembly is provided for releasably interconnecting confronting ends of conduit members. The coupling assembly creates a self-locking, and self-bonding connection wherein locking and unlocking is achieved by a predetermined amount of rotation of a lock nut group with respect to a stationary threaded flange. The overall construction of the coupling assembly creates the rigid connection between the conduit members, yet adequate sealing between the conduit members is provided by a single sealing member.

A latch for use in a vehicle having a rear seat with a fold down seatback. The latch comprises a striker member coupled to the vehicle and a latch assembly coupled to the seatback and configured to releasably engage the striker member. The latch assembly comprises a catch plate configured with two prongs and pivotably mounted on a support plate. A hook plate with two camming surfaces is configured to engage at least one of the prongs with the hook plate pivotably mounted on the support plate. The movement of the engaged prong is restricted in any direction when the hook plate is in a locked position.

A coupling assembly is provided for releasably interconnecting confronting ends of conduit members. The coupling assembly creates a self-locking, and self-bonding connection wherein locking and unlocking is achieved by a predetermined amount of rotation of a lock nut group with respect to a stationary threaded flange. The overall construction of the coupling assembly creates the rigid connection between the conduit members, yet adequate sealing between the conduit members is provided by a single sealing member.

A roof or wall covering comprising a plurality of horizontal courses of molded plastic panels each formed with a single row of simulated shake shingles. The panels have a continuous upper interlock flange that facilitates inner-engagement of the panels of overlying courses without cumbersome handling of numerous small interlock fingers which can be missed during installation. Cooperating detents are provided between the overlying lower and upper marginal edge regions which facilitate proper positioning of the panels and which support the weight of the panel during securement to a wall surface. A bottom interlock flange is supported transversely across a rear side of the panel by vertically-spaced support plates which facilitate both liquid drainage and air circulation through the installed wall covering. In the preferred embodiment, the panels in alternate courses are identically formed with different shake patterns for enhancing the natural appearance of the wall covering.

A support arm system (10) includes a socket (16) for attachment to a surface (18) and a support arm (14), for removable insertion in the socket (16). The support arm (14) has at least one formation (22). The socket (16) includes a housing (28) having an insertion opening (30) leading to a passage (32) for insertion of the support arm (14). At least one formation (34) in the passage (32) complementary to the at least one formation (22) on the support arm (14) is provided to engage the support arm (14) when the support arm (14) is in the socket (16). A gate element (36) in the passage (32) is biased to a position at or in front of said at least one formation (34) in the passage. To insert the support arm (14), the gate element (36) must be pushed against its bias to expose the formation in the passage for engagement by the support arm (14) to retain the support arm in the socket, the gate element (36) providing a positive force between the support arm (14) and socket (16) while it is so retained. In another form of the invention, a gate element (126) is moveable in the housing and has a periphery complementary to the insertion opening. This gate element (126) is pushed by the support arm against its bias to allow insertion of the support arm into the socket and to allow the respective formations to be brought into engagement to retain the support arm in the socket. When the support arm is not in the socket, the gate element (126) provides a substantially flush surface with the front surface of the housing.

A device for osteosynthesis that includes a fixation element having at least one through hole designed to receive a pivotable bushing for a bone screw. The through hole has a central axis and a cross-section extending orthogonally to the central axis defined by two incomplete semicircles connected to each other by at least two non-circular cut outs forming grooves in the fixation element. The device also includes at least one bushing insertable in the through hole. The bushing has top and bottom surfaces, a longitudinal axis, a central bore designed to receive a bone screw, and a peripheral outside face having at least two outwardly extending protrusions defining an axis of rotation of the bushing extending through the protrusions. A cross section of the bushing orthogonal to the longitudinal axis is shaped such that the bushing is pivotable about the axis of rotation defined by the protrusions.

A cutting insert made of cemented carbide and the use thereof for recessing or copy-turning, preferably at a high rotating speed. The cutting insert has at least one recess for insertion therein of a cutting body of a material other than cemented carbide, such as a ceramic material.

A silencer for an exhaust system of a combustion engine, more preferably of a motor vehicle, has two end face bottoms facing away from each other, a closed circumferential jacket, at least one silencer insert, at least one inlet pipe and at least one outlet pipe. At least one of the pipes extends through the jacket into the silencer interior and is fastened to the jacket. The manufacture can be simplified if the pipe extending through the jacket has a cone, if the silencer insert on an intermediate pipe has a mating cone which engages in the cone.

A snow glider is provided having a design that facilitates gliding through snow rather than skidding. The snow glider may have a narrow waist width combined with an elevated binding assembly to promote positive engagement with a skiing surface during use. A method of skiing includes skiing downhill on a skiing surface using glider skis, wherein each ski has a ski base and a pair of edges extending along opposite sides of the base. While skiing downhill, the method of skiing also includes changing direction without skidding the skis on the skiing surface.

The present invention relates to a method for connecting a metal workpiece and a plastic workpiece by means of a joining tool, including positioning the metal workpiece and the plastic workpiece, bringing the front end of the pin, the sleeve and the clamping ring in contact with an outer surface of the metal workpiece, rotating the sleeve and the pin so as to generate friction between the front ends of the sleeve and the pin and the outer surface of the metal workpiece, and moving the pin and the sleeve in the axial direction while both are rotated, one of the sleeve and the pin penetrating into the metal workpiece and the other of the sleeve and the pin being retracted from the outer surface thereof. The axial movement into the metal workpiece is stopped before the one of the sleeve and the pin reaches the contact surface and after stopping the axial movement the one of the sleeve and the pin is retracted from the metal workpiece and the other is moved towards the outer surface of the metal surface until the front ends of the pin and the sleeve are on the same level.

The actuator has a housing with a longitudinal passage between a first end and an opening at a second end. A spindle, supported and moveable in the passage, has oppositely handed, first and second threaded portions each nearer a respective end of the housing. A first nut fixed relative to the housing is engaged with the first threaded portion. The spindle is rotated and moved relative to the first nut by a handle at the housing first end. A second nut fixed against rotation relative to the housing and engaged with the second threaded portion moves relative to and in the same direction as the spindle as the spindle rotates. The second nut is connectable through the opening to a device, and the spindle is rotatable by the handle for adjusting the device by movement of the spindle and the second nut.

A cable retention system includes a cable tie and a storage and installation tool. The cable tie includes an elongated band having head and tail ends. The inner surface of the band includes spaced grooves offset toward the tail end to render it more flexible than the head end. Teeth along the inner surface of the band adjacent the head end and along the outer surface of the band adjacent the tail end engage in a circumferential direction when the head end overlaps the tail end. The tool has an annular configuration with an elongated longitudinal opening and an inner raceway for receiving cables. The opening enables the tube to be slipped over a group of cables and moved along the cables. As the tube is moved along the cables, the ties are slipped off and onto the cables at selected spaced locations for securing the cables into a bundle.