144 results about "Talus surface" patented technology

A slip assembly for gripping pipe during well drilling operations has a housing with a hole for receiving a section of pipe. Pockets in the housing are spaced circumferentially around the hole. Each of the pockets has side walls that face toward each other and are connected to each other by a back wall that has at least one ramp surface. A slip segment is located in each pocket, each slip segment having side edges that engage the side walls of one of the pockets. Each slip segment has a back side with a ramp surface that engages the ramp surface on the back wall of the pocket. Each of the slip segments is movable within its pocket from an upper outward position to a lower inward position in gripping engagement with the pipe.

The invention provides a building with precast reinforced concrete supports. The building is composed of the precast reinforced concrete convex supports, precast column frames, precast convex main beams, cavity floor components and connecting shallow seams among the cavity floor components. The building is characterized in that the precast reinforced concrete convex supports are each in a rhombicshape; rhombic convex support diagonal lines are constituent parts of the main beams; reserved column holes are formed in the centers of the convex supports, and longitudinal main beam reinforcing bars and transverse main beam reinforcing bars in the reserved column holes are crossed and have no reinforcing bar joint; the precast column frames are thin-wall frames, and steel wire nets are arrangedin the thin-wall frames; the cavity floor components are each shaped like a hexagon; each hexagonal cavity floor component is provided with two right-angle edges; longitudinal rib grooves and shallowconnecting seams are formed among the cavity floor components; the two ends of each precast main beam are provided with slopes or vertical grooved slopes; vertical bolt holes are reserved in the twoends of the main beams; concave grooves are reserved in the bottom surface of the two ends of the main beams; and steel plate connecting parts are assembled in the concave grooves.

A slip assembly for gripping pipe during well drilling operations has a housing with a hole for receiving a section of pipe. Pockets in the housing are spaced circumferentially around the hole. Each of the pockets has side walls that face toward each other and are connected to each other by a back wall that has at least one ramp surface. A slip segment is located in each pocket, each slip segment having side edges that engage the side walls of one of the pockets. Each slip segment has a back side with a ramp surface that engages the ramp surface on the back wall of the pocket. Each of the slip segments is movable within its pocket from an upper outward position to a lower inward position in gripping engagement with the pipe.

A joint structure for a floorboard, including: at least one first beveled tenon, the first beveled tenon including a tenon face facing upwards; a first beveled mortise, the first beveled mortise including a mortise face facing upwards; at least one second beveled tenon, the second beveled tenon including a tenon face facing downwards; and a second beveled mortise, the second beveled mortise including a mortise face facing downwards. The first beveled tenon is disposed in parallel to a surface of the floorboard at a right edge approximately half a height of the floorboard; the first beveled mortise is disposed at an inner side of the first beveled tenon. The second beveled tenon is disposed at a left edge approximately half the height of the floorboard. The second beveled mortise is disposed at an inner side of the second beveled tenon.

An apex rhombus is delimited over the center point of a square, which is delimited by plotting four nadir rhombuses on the same plane, and each of the nadir rhombuses and the apex rhombus are jointed to form a group of pyramidal surfaces equipped with four planar slopes having substantially the same height in a pyramidal form. Two pyramidal surface slabs are assembled, each composed of pyramidal surfaces around one pyramidal surface, each sharing one nadir rhombus, adjacent each other, and arranged in a grid pattern at an equal pitch in plural directions. The pyramidal surfaces arranged in a grid pattern are each displaced by one-half pitch in a specific direction, such that the apex rhombus of one of the pyramidal surface comes in contact with the nadir rhombus of the other pyramidal surface, whereby the two pyramidal surfaces are placed one on the other.

A roof structure may be made with one or more sandwich panels having a round corner and installed with a drainage slope (e.g., 5-10 degree) to facilitate removal of liquid (e.g., water, rain, snow, sleet, etc.) from the roof structure. The round corner may have any desired curvature and / or angle for establishing a drainage area. A bonding material may be used to secure and / or seal the underlying interface of the round corner. The roof structure may be secured to an exterior wall by the bonding material.

A rapid nail-free combined type house comprises a framework part, wall surface and roof which are adhered on the framework, wherein the wall surface and the roof are respectively assembled through inserting composition boards together, wherein an inner inclined surface bayonet is arranged on one side of the composition boards, a clipping groove is additionally arranged in the bayonet, an outer inclined surface clipping head is arranged on the other side of the composition boards, a clipping arm which is extended outwards is additionally arranged on the top of the clipping head, wherein the clipping head is inserted in the bayonet, and the composition boards are connected through the bayonet and the clipping head which are on the side. The composition boards have novel structure, rapid assembly, and are environmental friendly and can not be opened by pulling on the connecting portion, and the composition boards have the effects of preventing from earthquake and flood disaster and also have the characteristics of flame-proof, acoustic insulation, thermal insulation and the like.

A modular flooring assembly for heavy-duty applications is presented. It is made of a plurality of interlockable mat units, each mat having a plurality of edges with at least one edge having a connector in the plane of the mat unit. Each connector is made of a plurality of alternating teeth and grooves respectively adapted to engage the grooves and the teeth of another mat unit. Each groove has a first bevel with respect to the plane extending along its back wall and a rear portion of its corresponding side walls. Each tooth has a second bevel with respect to the plane extending along its front wall and a front portion of its corresponding side walls. The first and the second bevels are complementary and each side wall form a twist transition between the first and second bevels.

A precast concrete meter pit consisting of an elongated hollow pipe having a beveled support ledge at one end and notches at the opposite end is fabricated by utilizing a slip form packerhead apparatus in which the beveled support ledge is formed by a radially inwardly inclined trowel edge bearing against a pallet member which is caused to vibrate when concrete is injected into the slip form apparatus.

The invention relates to a light assembly type stairway and a construction method thereof and relates to the field of building structures. The stairway comprises an oblique beam with a light concrete upper layer, wherein a plurality of steps are arranged on the upper oblique surface of the oblique beam, supporting parts used for connection are arranged at the upper end the lower end of the oblique beam respectively, thin-wall U-shaped steel is wrapped in each supporting part, the notches of the two pieces of thin-wall U-shaped steel are opposite, the upper portions and lower portions of the two pieces of thin-wall U-shaped steel are connected through electrowelding bar-mat reinforcements wrapped in the oblique beam respectively, inclined inserted steel bars are welded between the two electrowelding bar-mat reinforcements, and a bolt hole penetrating through the thin-wall U-shaped steel from top to bottom is formed in the supporting part at the upper end or lower end of the oblique beam. The stairway is compact in structure and light, and construction is convenient.

A structure comprising a softwood-ceiling / hardwood-floor formed of a single set of adjacent boards. Each of the boards including a hardwood layer bonded to a softwood layer, the board having a first edge and a second edge, the first edge having a tongue, the second edge having a groove, the first edge having a first chamfer on the softwood layer, the second edge having a second chamfer on the softwood layer. All boards securely attached to carrying beams that span the walls between two levels within a building.

The invention discloses a multi-ridge diamond composite sheet. The multi-ridge diamond composite sheet comprises a cemented carbide matrix and a diamond composite layer. The multi-ridge diamond composite sheet is characterized in that two or more protruding ridges forming a certain included angle are arranged on the end face of the diamond composite layer, and the contracting ends of all the protruding ridges extend to interest at the edge of the diamond composite layer. According to the multi-ridge diamond composite sheet, the multiple protruding ridges forming the certain angle are arrangedto serve as cutting surface sets to simultaneously cut a stratum; the stratum is pre-crushed firstly through the protruding ridges forming the certain angle, sharp surfaces (the contracting ends of the protruding ridges) are inserted into the stratum firstly, a crushed pit is further enlarged in the direction of the ridges, and then the stratum is further extruded and crushed through the bevels ofthe two sides of the set of ridge surfaces, so that the cutting surfaces of the ridges have the high ploughing effect, the crushing drilling performance of the composite sheet is improved, the drilling cutting resistance is decreased, and thus the mechanical drilling speed of a diamond drill bit is increased.