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An extension member is attachable to a trailer hitch and extends away from the vehicle and is connected to a seating frame supporting a toilet seat.
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| Number | Title | Issue Date |
| 7938059 | Pressure attenuated pump piston A pump piston assembly for use with a high-pressure pump includes a first section extending axially from a first end, a second section positioned adjacent to the first section and extending axially towards a second end, and an attenuation feature disposed within the... | 05/10/2011 |
| 7870818 | Piston for a piston-cylinder unit A piston-cylinder assembly includes a working cylinder, and a one-piece stamped and formed piston body which is attached to a piston rod, the piston body being axially movable in the cylinder and dividing the cylinder into two working spaces. The piston body has at ... | 01/18/2011 |
| 7650829 | Tubular piston for a piston engine and method of manufacturing the same The invention relates to a hollow piston (1) for a piston engine, said hollow piston comprising a peripheral wall (3a), a central rod (11), a front wall (3b) on the front end thereof, and an articulated part 4a... | 01/26/2010 |
| 7607384 | Piston for an axial-piston engine of the inclined-axis type and process for manufacturing such pistons A piston (2) for a piston engine, in particular for an axial-piston engine (1) of the inclined-axis type, comprises a conical section (26), a neck region (19) and a ball end (9) which is formed onto said neck region (19), a ... | 10/27/2009 |
| 7424846 | Pneumatically static balancer for machine tool A pneumatically static balancer for a machine tool counterbalances or lightens a gravitational load generated by an own weight of a vertically moving driven member. The pneumatically static balancer includes a pneumatic cylinder supporting the driven member and allo... | 09/16/2008 |
| 7387062 | Seal ring free piston structure A piston includes a cylindrical body having a neck formed on an outer periphery of the cylindrical body so as to form a first annular disk and a second annular connecting to the first annular disk via the neck, multiple through holes defined through the second annul... | 06/17/2008 |
| 7374406 | System and method for reducing noise in multi-capacity compressors A method and system is provided for reducing chatter in multi-capacity compressors having disengageable eccentric structures. The multi-capacity fluid compressor includes a compression chamber having a discharge end and an inner surface. The compressor also includes... | 05/20/2008 |
| 7284475 | Pneumatic reciprocating motor A gas-actuated reciprocal drive apparatus has a double-acting piston in a pneumatic cylinder having a chamber at each end. Gas from an area of higher pressure in a compressed gas system flows into a first chamber, while the second chamber is in fluid communication w... | 10/23/2007 |
| 7273004 | Reciprocating machine The radial piston or reciprocating engine (1) has annularly juxtaposed, radially directed piston-cylinder units (2, 3). The outward stroke of the pistons (2) is controlled by the cam (11) of a common eccentric shaft (12), whereas t... | 09/25/2007 |
| 7240603 | Valve A piston assembly for a door closer includes a piston formed with a mounting hole and a door closer valve installed with clearance in the mounting hole. The door closer valve has a body part with first and second formations at opposite respective ends of the body pa... | 07/10/2007 |
| 7168360 | Steering system actuator for vehicle with at least three steered wheels A linear actuator for vehicle power steering systems with at least three steered wheels of a double-acting type that comprises a cylindrical body, closed at opposite ends; a piston, accommodated inside the cylindrical body axially slideable between the ends; and a s... | 01/30/2007 |
| 7111823 | Actuator An actuator having a set of slidable pistons including sliding regions with the sliding regions including at least one wear member supported by a resilient member and a second wear member laterally spaced from the first wear member with a lubrication reservoir locat... | 09/26/2006 |
| 7104180 | Low noise linear actuator A linear actuator system including a cylinder, a piston slidably received within the cylinder and defining a piston chamber and a rod chamber in the cylinder, wherein the piston includes a plurality of orifices therethrough that place the piston chamber and the rod ... | 09/12/2006 |
| 7043904 | Electrical energy from live loads A group of devices and machines for converting the mechanical energy of live loads into electricity. A generator is operated by gears which in their turn are operated by a Bourdon tube or similar-acting device fed by working fluid in a pipe from a reservoir. The res... | 05/16/2006 |
| 6994014 | Closed cavity piston for hydrostatic power units and method of manufacturing the same Disclosed is a closed cavity piston made from a metal injection molding process. The piston has an elongated cylindrical body with a first end that is adapted to receive a slipper. The piston also has at least one hollow compartment and a hollow stem that transports... | 02/07/2006 |
| 6923348 | Pump with pneumatic motor A pump having a compressed-air-operated reciprocating motor for reciprocating a pump plunger through forward and return strokes. The motor comprises a motor cylinder and a motor piston operable in the cylinder and itself acting as a valve for effecting its return th... | 08/02/2005 |
| 6880335 | Stirling cycle cryocooler with improved magnet ring assembly and gas bearings A piston assembly for use in a motor comprises a cylinder having a bore, an electrically conductive piston reciprocally disposed within the cylinder bore, a gas cavity formed within the piston, and one or more gas bearings associated with the piston, each of the one... | 04/19/2005 |
| 6840696 | Method for producing a ball-and-socket joint between a slipper and a piston, and a ball-and-socket joint of this type A method of producing a ball-and-socket joint (1) between a slipper (3) and a piston (2) of a piston engine, which includes configuring the slipper (3) with a joint ball (4) at an end opposite a bottom surface (21); configur... | 01/11/2005 |
| 6802701 | Suction valve assembly of compressor A suction valve assembly of a compressor includes: a piston disposed movable in a cylinder forming a compression chamber, having a suction passage for sucking a fluid and a valve seat formed at a front side thereof; a valve body contacted to the valve seat to open a... | 10/12/2004 |
| 6736292 | Pneumatic reciprocating motor and grease gun incorporating same A grease gun having a compressed-air-operated reciprocating motor for reciprocating a pump plunger through forward and return strokes. The motor comprises a motor cylinder and a motor piston operable in the cylinder and itself acting as a valve for effecting its ret... | 05/18/2004 |
| 6732633 | Reduced dead volume hollow piston A piston for use in the cylinder block of a hydraulic power unit. The piston has an elongated cylindrical body with one end configured to connect with a slipper element. The second end of the piston is open with an annular cavity in the piston body defining an elong... | 05/11/2004 |
| 6634867 | Shuttle piston assembly with dynamic valve A portable, high capacity air compressor system for charging air tanks over wide pressure ranges with maximum volumetric efficiency is characterized by employing a shuttle piston assembly in which piston pairs are arranged with axially aligned cylinder pa... | 10/21/2003 |
| 6623258 | Axial piston refrigerant compressor with piston front face projection The invention relates to a refrigerant compressor comprising at least one piston-cylinder unit and one valve plate that has at least one outlet opening. The piston has a projection which projects into the outlet opening when the piston is located near the... | 09/23/2003 |
| 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 |
| 5980223 | Refrigerant compressor having an asymmetrically contoured piston A refrigerant compressor has a reciprocating piston with a projection extending therefrom is disposed in a cylinder. The cylinder has an end wall with a discharge opening operably closeable by a discharge valve. The projection is disposed on an end face o... | 11/09/1999 |
| 5775306 | Advance mechanism An advance mechanism for a pump comprises a fluid operable piston arranged to have pressurized fluid applied to a first end thereof to adjust the axial position of the piston. The arrangement further comprises means for applying fluid under pressure to a ... | 07/07/1998 |
| 5688113 | Piston for a piston pump with a two part inlet valve body The invention relates to a piston, through which a fluid can flow, for a piston pump, which piston has a longitudinal bore into which a spring-loaded inlet valve body is inserted. In order to be able to bring a helical compression spring, which loads the ... | 11/18/1997 |
| 5492459 | Swash plate compressor having a conically recessed valved piston A swash plate compressor with single ended pistons improves piston stability by providing the ends of the pistons with open, conical rims, the outer surfaces of the which match, and thereby enlarge, the outer surface area of the pistons. The pistons there... | 02/20/1996 |
| 5487206 | Door control device A door closing device comprises a piston (12) having at one end a seal (21) which seals the interface between the piston and a housing (10). The seal (21) also acts as a one-way valve and carries a pressure relief valve (37).... | 01/30/1996 |
| 5235899 | Self-contained envelope for vehicular transmission servo control unit This invention is directed to a new and novel envelope for housing a servo mechanism adapted to control a brake assembly used in conjunction with a vehicular transmission. The envelope is adapted to be demountably received within a receptacle provided in ... | 08/17/1993 |
| 5150643 | Reciprocating actuator An actuator is driven in a first direction by equal working fluid pressures acting on different piston areas acting in opposite directions, and is driven in a second direction by applying equal pressures on both sides of one of the piston areas. Working f... | 09/29/1992 |
| 5149254 | Refrigeration compressor having a contoured piston A small hermetic refrigeration compressor of the single reciprocating piston-type has flat valve plate extending across the open end of the cylinder with a discharge port extending through the valve plate off the center line of the cylinder bore. The pist... | 09/22/1992 |
| 5079997 | Piston seal device for a pneumatic cylinder A piston seal device of pneumatic cylinder which satisfies the required tightness of a seal as well as the required lubrication characteristics for a piston movement is disclosed. The piston seal device for maintining different pressures acting on each si... | 01/14/1992 |
| 5076148 | Piston for axial piston machines A piston for axial piston machines in the form of a hollow body with an axial cavity therein into which an insert is inserted and is secured axially by means of a collar in the wall of the hollow body surrounding the insert overlapping its outer end face ... | 12/31/1991 |
| 5072655 | Pistons for axial piston machines A piston for an axial piston machine, comprising a hollow body having an axial cavity into which a filler piece of a material of lower specific gravity than the material of the piston is inserted which at least partially fills said cavity, said filler pie... | 12/17/1991 |
| 5031664 | Pressure fluid reservoir for vehicle brake systems A pressure fluid reservoir having at least an approximately vertically disposed cylinder with a displaceably guided divider piston therein. The piston divides a pressure fluid reservoir chamber of the cylinder, located below the piston from a gas chamber ... | 07/16/1991 |
| 5007332 | Piston for piston machines In a piston for piston machines comprising a hollow body, open at least at its free end, having an axial cavity in which there is a filler piece at least partly filling the latter and consisting of a material of lower specific gravity than the material of... | 04/16/1991 |
| 4949622 | Fluid operable engine A fluid operable engine has a cylinder in which a piston slides up and down. The cylinder has a cylindrical wall and two end walls. The piston divides the cylinder into two chambers. The piston is hollow, has a cylindrical wall and two end walls, with a r... | 08/21/1990 |
| 4932313 | Air bearing piston and cylinder assembly A piston for a gas-operated linear actuator wherein a double-acting piston moves axially within a cylinder in response to gas pressure applied intermittently to chambers on either side of the piston. The piston has reservoirs in the form of holes in each ... | 06/12/1990 |
| 4858566 | Axially symmetrical piston for reciprocal engines A piston assembly for high-pressure, high-temperture, internal combustion engines, the piston assembly having a piston unit with a piston head and a piston skirt which interconnect to form a substantially sperical internal socket, the assembly also having... | 08/22/1989 |
