A press-fit structure and a press-fit method are introduced. The press-fit structure includes a body, a pressurizing portion, a material storage space, a restricting portion and a limit stop portion. The pressurizing portion is for applying a pressure on an object to cause a material of the object to flow into or enter the material storage space. The object is restricted by the restricting portion, and a restriction direction of the press-fit structure is restricted by the limit stop portion. Thus, the press-fit structure and the press-fit method of the present disclosure are enabled to provide a required object with a stable assembly effect.

An apparatus comprising a first component comprised of a first material, wherein the first material has a first thermal contraction property. A second component comprised of a second material, wherein the second material has a second thermal contraction property, wherein the second component has an opening where a portion of the first component is inserted into at room temperature. Wherein the second thermal contraction property is larger than the first thermal contraction property and when at cryogenic temperatures, the first component and second component constrict, wherein the second component constricts more than the first component causing the second component to exert a constricting force on the portion of the first component inserted into the opening of the second component.

A bracket for clamping a photovoltaic module to a torque tube includes a planar base having a pair of aligned holes, a pair of bolts each extending through one of the pair of holes, and a plurality of securing tabs. Each of the securing tabs can be formed by bending a corner portion of the planar base downwardly to a desired angle. The pair of bolts extend to a sufficient length so as to permit a threaded portion of each bolt to be threaded into a complementary threaded hole of the photovoltaic module assembly (e.g., a rail supporting the photovoltaic module). The supporting tabs are structured and arranged to grip lateral sides of the torque tube. Advantageously, the dimensions allow the clamp to stay on the torque tube through a friction fit for ease of installation prior to threading the hardware into the photovoltaic module assembly.

Methods and systems are provided for assembly of coin components. Two or more coin components are received in an assembly station having at least two assembling members. The assembling members may be configured to form a chamber comprising the cavities and at least one assembling member may be movable over an assembling path. A merging force may be applied for assembling the coin components together to allow continuous production of joined coin components such that when the movable assembling member travels along the assembling path, one coin component locates within the other, thereby forming a coin assembly over a non-zero distance.

Compression cold welding methods, joint structures, and hermetically sealed containment devices are provided. The method includes providing a first substrate having at least one first joint structure which comprises a first joining surface, which surface comprises a first metal; providing a second substrate having at least one second joint structure which comprises a second joining surface, which surface comprises a second metal; and compressing together the at least one first joint structure and the at least one second joint structure to locally deform and shear the joining surfaces at one or more interfaces in an amount effective to form a metal-to-metal bond between the first metal and second metal of the joining surfaces. Overlaps at the joining surfaces are effective to displace surface contaminants and facilitate intimate contact between the joining surfaces without heat input. Hermetically sealed devices can contain drug formulations, biosensors, or MEMS devices.

A support member includes a base projection. A cover includes a press-fitting portion and a cover projection. The press-fitting portion is press-fitted to a press-fitting hole of the support member. The cover projection is placed at a location, which is spaced from the base projection in a state where the press-fitting portion is press-fitted. At time of disassembling between the support member and the cover by sliding the cover in a releasing direction, the base projection and the cover projection contact with each other to form a disassembly indication mark, which indicates the disassembling between the cover and the support member, on at least one of the base projection and the cover projection.

The invention relates to a metallic fastener (10; 40) for the interference fit assembly of at least two structural elements (20, 22) comprising a through hole, the fastener comprising an enlarged head (12; 42), a shaft (14; 44) having an external diameter before installation that is greater than an internal diameter of the hole, said shaft comprising a conductive surface (26; 56). Before installation, at least the conductive surface (26; 56) is coated with a lubricating layer (30), which comprises a mixture of at least one polyolefin and one polytetrafluoroethylene, for example, having sufficient adherence to prevent its abrasion by manual manipulation of the fastener and being weak enough to be at least partly stripped from the conductive surface during the interference fit assembly of the fastener.

The invention further relates to a method for obtaining such a fastener and to a method for installing such a fastener in a structure.

The invention is applicable to the assembly of aircraft structures.

A vacuum operated brake booster, comprises a casing including a base defining at least one hole, and at least one tube extending through the casing and configured to receive a screw for fastening the brake booster to a wall of a passenger compartment of a vehicle. The tube defines a rear end with a peripheral fold forming a rear groove, and an extension extending beyond the rear groove, the extension defining a first outer edge and being configured to be folded toward an outer side of the tube to form a crimping lip. The at least one hole is bordered by a recessed ring having a form complementary to that of the rear groove of the rear end of the at least one tube. The extension is configured to be folded above a second outer edge of the recessed ring and blocked in the groove.

A method for producing a part. This part including a surface portion whereon is positioned an element to be assembled via an adhesive on the surface portion. The method includes the steps of: mounting a sleeve of heat-shrinkable material around at least one portion of the element on the part, heating of the sleeve in order to shrink it and thus to apply an application force of the element on the surface portion, hardening of the adhesive, and removing the sleeve.

A bracket includes a cylindrical portion and a plate-shaped portion that are integrally formed. The cylindrical portion is provided at one end side of a blank along one direction and is provided with a slit extending over an entire length of the cylindrical portion in the one direction as a result of forming a portion at the one end side of the blank along the one direction into a cylindrical shape extending in the one direction. The plate-shaped portion is provided at the other end side of the blank along the one direction. The cylindrical portion of the bracket is inserted in the cylindrical body member formed of an aluminum alloy material, and the body member and the cylindrical portion are clinched by electromagnetic tube compression.