Class 92/260 - Welded, brazed or soldered (231)

Subclass of Class 92 - Expansible chamber devices
Definition: Apparatus comprising a welded, brazed or soldered joint.
No. of patents: 36
Last issue date: 01/15/2008

Number	Title	Issue Date
7318505	Vibration damper Damping element having a container tube, a piston mounted with freedom of movement in the damping medium-filled tube, a piston rod connected to the piston, and a fastening part for connecting the damping element to the first of the masses which are to be isolated fr...	01/15/2008
7007590	Device with at least one extension arm or support arm for multi-linked crane shaped extension arms, concrete spreader columns and similar The invention relates to a device with at least one extension arm or support arm for multi-linked crane shaped extension arms, concrete spreader columns and similar, comprising at least one hydraulic differential cylinder for actuating a support arm. The cylinder co...	03/07/2006
7005620	Piston and method of manufacture A piston particularly adapted for heavy-duty diesel engine applications is fabricated from separate parts having circumferentially extending joining surfaces that are heated prior to bonding to an elevated temperature sufficient to enable bonding of the joining surf...	02/28/2006
6662709	Hollow piston for a piston engine and method for producing a hollow piston A hollow piston (1) piston engine including a closed annular cavity (9). Said hollow piston constituted of a first piston part (1a) with a base section (3) from which a joint part (4) extends in one axial direction, and from which a peripheral wall (6) th...	12/16/2003
6588321	Closed cavity piston and method of making the same A closed cavity piston includes an elongated piston body and a separately formed piston cap having an elongated stem and head thereon. The body includes a closed end and an open end with a cavity having a bottom wall adjacent the closed end and an outer w...	07/08/2003
6525289	Piston for magneto-rheological fluid systems and method for its manufacture The piston for a magneto-rheological fluid system is manufactured from a piston skirt of a material having a high magnetic permeability and a piston plate which closes one end of the piston skirt having a low magnetic permeability and therefore must be ma...	02/25/2003
6471496	Piston pump for a vehicle brake system To enable economical production of a piston for a piston pump, the piston is made from a tubular deformed part and a closure plug, which is press-fitted with a protrusion into the deformed part. The piston has the advantage that the piston can be made wit...	10/29/2002
6431051	Closed cavity hydraulic piston and method of making the same A hydraulic piston for a cylinder block of a hydrostatic power unit has an elongated cylindrical body with first and second ends. An elongated cavity is formed in the body. A cap is adhered to the body to close the cavity. The cap has an external shape to...	08/13/2002
6318241	Piston for a hydrostatic cylinder block A piston for use in the cylinder block of a hydraulic power unit. The piston has an elongated cylindrical body and one end terminating in a spherical surface. The piston is composed of a body and insert which are made from different materials, preferably ...	11/20/2001
6318236	Reciprocal motion type compressor having a piston in which strength is increased There is provided a reciprocal motion type compressor which has a piston reciprocally movable in a cylinder. The piston has a piston cover and a piston body portion. The piston cover has an insertion portion engaged with the piston body portion. The inser...	11/20/2001
6314864	Closed cavity piston for hydrostatic units A closed cavity piston assembly includes a piston body, a separately formed piston cap sealingly joined to the body, and an elongated stem integrally formed with one of the piston body or the cap. In one embodiment, the stem is integrally formed with the ...	11/13/2001
6293185	Piston for a hydrostatic cylinder block A piston for use in the cylinder block of a hydraulic power unit. The piston has an elongated cylindrical body and one end terminating in a spherical surface. The piston is composed of a body and insert which are made from different materials, preferably ...	09/25/2001
6209446	Piston for internal combustion engine and process of making same The present invention is a piston for use in an internal combustion engine and a method of manufacturing the piston. In the method of the present invention, a first block comprising a first alloy and a second block comprising a second alloy are press-forg...	04/03/2001
6112642	Method and apparatus for making a two piece unitary piston Past pistons have been susceptible to reduced longevity due to increased forces of combustion thereon during operating cycles of an engine. The present two piece unitary piston increases the longevity of pistons used with increased forces of combustion. F...	09/05/2000
5642654	Piston and method of manufacturing the same This invention relates to a piston and a method of manufacturing the same. The piston includes a substantially cylindrical member having a first end and a second end. The cylindrical member includes an open cavity extending axially from the second end to ...	07/01/1997
5588351	Head for two piece articulated piston A two-piece, or articulated, piston head for internal combustion engines having top and pin boss portions in which the underside of the top portion is provided with a groove whose inner wall is eccentric in relation to the longitudinal axis; of the top an...	12/31/1996
5359922	Head of two welded parts for two-piece articulated piston A method to manufacture an articulated piston head wherein the two portions composing the head, i.e. the top portion and the pin boss portion, are formed separately from blanks of forged or cast chromium-molybdenum steel or a low alloy steel, subjected to...	11/01/1994
5309818	Method for the manufacture of a cooled piston A cooled piston head and method of manufacture, the piston head having a closed cooling chamber. In one embodiment, the piston head is formed of a top member, an intermediate member and a pin boss member joined to each other preferably by welding; the top...	05/10/1994
5301599	Pistons with ring groove reinforcing Pistons and a method for their manufacture are described. The piston has at least one piston ring groove reinforcing member being annular in form and having, in cross-section, upper and lower, generally radially extending face portions and a radially inne...	04/12/1994
5265331	Method of manufacturing a piston for an axial piston fluid translating device Hydraulic piston pumps and motors are used in various applications to power implements, steering, propel, and auxiliary systems. However, it is important to keep the piston weight and compressible fluid volume low in order to have a smaller more efficient...	11/30/1993
5094149	Pistons having a component incorporated therein Pistons and a method for making them are described. The pistons have reinforcing components, such as piston ring groove inserts, incorporated therein. The reinforcements have one or more porous bodies joined thereto, for example, by brazing and which are ...	03/10/1992
4998461	Two-part plastic piston with excess resin receiving groove A plastic piston of master cylinder has a first member having a small diameter portion and a second member having a large bore portion. Excess welding resin is prevented from being leaked into a seal ring mounting groove formed on a part of the outer peri...	03/12/1991
4872370	Piston rod assembly including preloaded piston head and composite rod Piston rod assembly includes a composite piston rod having an entrapment ridge along the length thereof, and a non-integral metallic piston head having two separate piston head sections which are welded together in preloaded engagement against opposite si...	10/10/1989
4741254	Pump plunger A pump plunger formed from a centrally bored cylinder of a preferred compound having counterbored ends provided with inwardly converging counterbore inner end limits for thermally shrinking and centering a bolt and its nut therein. One end of the bolt pro...	05/03/1988
4706550	Metal matrix composite piston head and method of fabrication An aluminum torpedo piston is provided with a piston head fabricated from a etal matrix composite material composed of aluminum and silicon carbide fibers that are integrally joined by an inertial welding technique. A 23% weight of silicon carbide fibers t...	11/17/1987
4651631	Manufacture of pistons A piston is formed in two parts. The main part is formed by gravity die casting from aluminum or aluminum alloy and a second part of the piston is formed by a squeeze casting process to produce a material which is stronger and more resistant than the grav...	03/24/1987
4604945	Thermally insulated piston This invention discloses a thermally insulated piston having a cap portion and a body portion. The cap can be made of metal or ceramic. The cap and body portion are joined together by a brazing alloy. The cap portion can have a groove for receiving the br...	08/12/1986
4581983	Piston for internal combustion engines In a cooled composite piston having a cooling passage adjacent to the interface and a method of making same, the upper part consists of forged steel and is formed on its underside with ribs bearing on mating surfaces of the lower part. To improve the resi...	04/15/1986
4552057	Thermally insulated piston This invention discloses a thermally insulated piston having a cap portion and a body portion. The cap can be made of metal or ceramic. The cap and body portion are joined together by a brazing alloy. The cap portion can have a groove for receiving the br...	11/12/1985
4517930	Piston of combustion engine A piston is provided for an internal combustion engine, having a crown portion comprising an upper part and a lower or ring-bearing part which two parts are of different metals welded together. The two metals are chosen to have the same coefficient of exp...	05/21/1985
4454802	Piston assembly for a fluid mechanism with reaction plate, complete with slipper block The present invention relates to an assembly, for use in a pressurized fluid mechanism equipped with pistons bearing against a reaction plate by way of slipper blocks, which assembly consists in such a piston and the associated slipper block coupled to on...	06/19/1984
4370918	Fluid cylinder assembly A fluid cylinder assembly comprising a cylinder housing including a closed end portion and a piston assembly including an end piece member having at least one projection extending therefrom for abutting the closed end portion of the cylinder housing so as...	02/01/1983
4324171	Fluid device and method for making A reciprocating fluid device is provided in which dynamic stresses in the weld between the cylindrical tube and the base thereof are reduced by prestressing the tube proximal to the weld prior to welding....	04/13/1982
4303005	Hydraulic cylinder assembly A hydraulic cylinder assembly including an outer barrel having one or more internal sleeves and a center rod telescopically mounted therein. The outer barrel and internal sleeves each have a bottom end tube welded to one end thereof and a packing gland tu...	12/01/1981
4096787	Cylinder-and-piston arrangement and method of manufacturing the same A piston rod connected at one end to a piston slidably arranged in a cylinder projects with its other end through an opening in an end wall of the cylinder beyond the latter and a fork-shaped member is connected by a friction weld, that is without adding ...	06/27/1978
3965992	Internally silenced impact driven tools and impacting means therefor Impact driven tools of the type generally comprising a bitter end bounded by a collar and a shank and a tip are provided with internal silencing means comprising an opening in the bitter end, said opening filled with a sound attenuating material, which is...	06/29/1976

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Class 92/260 - Welded, brazed or soldered (231)