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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 |
| 7338017 | Methods and apparatus for vibration and buffet suppression Apparatus and methods for hybrid actuation and suppressing vibration are disclosed. In one embodiment, a hybrid actuator includes a first actuator and a second actuator linked to move a component a combined actuation distance. The first actuator may include a hydrau... | 03/04/2008 |
| 7175001 | Apparatus for driving raising and lowering of lift for tower type storehouse There is provided an apparatus for driving the raising and lowering of a lift for a tower type storehouse so as to supply a force for vertically operating the lift carrying goods to storerooms on every floor of the storehouse, and more particularly to an apparatus f... | 02/13/2007 |
| 7171890 | Telescopic lifting device The invention relates to a telescopic lifting column. The lifting column comprises a plurality of tube bodies which are arranged concentrically inside one another and are axially movable in each case with respect to each other. Furthermore, the lifting column compri... | 02/06/2007 |
| 6981440 | High-speed cylinder apparatus A movable cylinder (20) is provided with an inner cylinder chamber (21) and an outer cylinder chamber (31) which surrounds the inner cylinder chamber. The inner cylinder chamber is provided with an inner piston (22) inserted therein, whic... | 01/03/2006 |
| 6931962 | Foot or hand operated control A control has a pivotal part with an operating surface that can be depressed by a person's foot or hand, with pivoting being sensed by a pivot sensor. A spring-operated mechanism urges the pivotal part toward an initial position while allowing it to pivot in both cl... | 08/23/2005 |
| 6543331 | Hydraulic lifting device A hydraulic lifting device provides a lifting of the massive objects, having a complex geometric form and includes a support plate rigidly connected to the plungers coupled with the body carrying a main plunger, comprising a main rod and a main hydraulic ... | 04/08/2003 |
| 6116140 | Telescoping system with multi-stage telescopic cylinder The telescoping system includes a first and second fluid motor. The first fluid motor includes a first cylinder and a second cylinder nested in the first cylinder. The second fluid motor includes the second cylinder and a piston disposed in the second cyl... | 09/12/2000 |
| 6029559 | Telescoping system with multiple single-stage telescopic cylinders The telescoping system includes a first fluid motor and a second fluid motor. The first fluid motor includes a first extension chamber and a first retraction chamber, and the second fluid motor includes a second extension chamber and a second retraction c... | 02/29/2000 |
| 6005395 | Method and apparatus for sensing piston position A system for determining the position of a piston moveable within a cylinder, or of an implement or joint, is disclosed herein. Electromagnetic (EM) bursts such as ultra-wideband or frequency pulses are generated and applied to a transmitter/receiver unit... | 12/21/1999 |
| 5953967 | Fluid-operated cylinder-piston unit, and a tool provided therewith A fluid-operated cylinder-piston unit has a cylinder forming an inner space, a piston unit movable in the inner space and including a first piston and a second piston movable relative to one another and each having a displacement area at one end and a for... | 09/21/1999 |
| 5927178 | Press driven tool actuator module A hydraulic actuator for a hydraulically driven device has a hydraulic cylinder, a first piston slidably received for reciprocation within the cylinder and defining a hydraulic fluid chamber with the cylinder, a second piston slidably received for recipro... | 07/27/1999 |
| 5799563 | Piston and cylinder clamping motor A valve spring compressor apparatus for removing and installing valve springs on automotive racing engines includes a valve seat and a compressor pump assembly. The valve seat is placed between the valve spring and the engine housing. The compressor engag... | 09/01/1998 |
| 5613418 | Multiple-stage hydraulic cylinder A multiple-stage hydraulic cylinder for shifting loads by exerting different forces over different distances, in which a hollow-piston cylinder is provided with a hollow piston rod. The hollow piston rod accommodates at least one additional long-stroke cy... | 03/25/1997 |
| 5558005 | Multi-section actuator Actuator (1) adapted to be actuated by pressurized fluid as shown for example in FIG. 3, having a plurality of piston-cylinder units (A, B, C, D, E, F) arranged one behind the other and displaceable in the direction of a longitudinal axis (9), in which ad... | 09/24/1996 |
| 5398741 | Method and apparatus for rotary-cutting a timber in a veneer lathe A method and apparatus for rotary-cutting a timber to peel off a veneer by a cutting knife from the outer periphery of a timber while rotating the timber around its longitudinal axis. The timber is gripped at its two end faces by means of chucking pawls w... | 03/21/1995 |
| 5390586 | Self-bleeding hydraulic cylinder A self-bleeding multi-stage or single-stage hydraulic cylinder system is disclosed which automatically bleeds entrapped air from within the cylinder each time the cylinder is cycled. The self-bleeding structure preferably includes a fixed elongated tube m... | 02/21/1995 |
| 5322004 | Telescoping fluid actuator A telescoping fluid actuator assembly including a housing having a plurality of concentrically disposed fluid actuators disposed therein. Each fluid actuator includes a cylindrical housing enclosing a piston and piston rod. Fluid passage means is provided... | 06/21/1994 |
| 5305605 | Hydraulic piston and cylinder unit An hydraulic piston and cylinder unit with a piston rod and first and second cylinders. The piston rod extends into the first cylinder, and the first cylinder extends into the second cylinder. The piston rod is connected to a first piston which divides th... | 04/26/1994 |
| 5263402 | Lift/slider apparatus This invention relates to a displacing apparatus comprising a plurality of concentric tubular members concentrically disposed about a central axial member. These concentric members define a plurality of substantially closed chambers between adjacent conce... | 11/23/1993 |
| 5247872 | Multi-stage hydraulic actuator A multi-stage hydraulic actuator including a cylinder body having an outer cylinder and an inner cylinder provided in the outer cylinder, first and second pistons inserted in the outer cylinder to independently move and provided with first and second work... | 09/28/1993 |
| 5111733 | Multiple stage hydraulic jack for use with telescopic jib This invention relates to a multiple jack incorporating at least three elements, viz. two pistons and two cylinders which define large and small chambers of a first cylinder, and large and small chambers of a second cylinder. According to the invention: a... | 05/12/1992 |
| 4936193 | Protective device The present invention provides a protective device for a working member, such as the piston rod of a piston and cylinder actuator, which is arranged at least partly in a receiving member and is able to be moved and more especially slid, along a curved or ... | 06/26/1990 |
| 4930402 | Hydraulic lifting cylinder-piston unit A hydraulic cylinder-piston unit comprises primary cylinder-piston unit with an integrated position regulation and with a primary cylinder and a primary piston movable in the primary cylinder, two displacement chambers in the primary cylinder and includin... | 06/05/1990 |
| 4928488 | Hydraulically-operated support device for semitrailers A hydraulically-operated support device for semitrailers is disclosed comprising a hydraulic cylinder semitrailer support and a pump subassembly having three independently operable pumps for generating and controlling the hydraulic operating pressure. The... | 05/29/1990 |
| 4881211 | Multiple frequency range hydraulic actuator A multiple frequency range hydraulic actuator includes a low frequency cylinder with a low frequency actuator piston within. The low frequency piston operates as a high frequency cylinder having a high frequency piston within. The low frequency piston, an... | 11/14/1989 |
| 4869458 | Liquid distribution valve An apparatus for feeding a liquid from a reservoir is provided. A distribution duct that defines a channel extending from the reservoir is provided that is in fluid communication with a feeding duct that defines a channel. A valve seat is located between ... | 09/26/1989 |
| 4852464 | Two-stage telescoping hydraulic cylinder To allow a telescoping cylinder that is ordinarily operated in a fixed sequence to also be operated in a simultaneous mode, the first stage (12) of the cylinder is provided with an end plate (126), the cylindrical gap (114) in the first stage communicates... | 08/01/1989 |
| 4751821 | Digital linear actuator A digital linear actuator includes a plurality of digital actuator cells each connected to the next in sequential fashion. Each of the digital actuator cells contracts or expands a predetermined amount along an expansion/contraction axis when it is actuat... | 06/21/1988 |
| 4741246 | Stage selectable telescopic cylinder assembly A multiple stage telescoping cylinder assembly, which provides full stage selection capability without the need for external hoses or reels, comprises a base; an inner cylinder attached at its rearward end to the base and first and second stage cylinders ... | 05/03/1988 |
| 4733598 | Telescopic jib A telescopic device for use in a crane jib, forklift truck, lighting tower, access platform or the like, having at least two extandable sections extending from a base section, in which each said extendable section is extended by a piston and cylinder asse... | 03/29/1988 |
| 4727781 | Supercharged power tongs A supercharged power tongs for making up or breaking apart drill tools used in oil or geologic drilling engineering is designed to take the place of B-type tongs. Supercharger and assist fluid cylinders are adopted in the gripping and torqueing devices re... | 03/01/1988 |
| 4726281 | Hydraulic cylinder A multistage cylinder having a partial force mode, a full force extended mode, and a full force retracted mode, and having an outer cylinder closed at one end and open at the other, one or more intermediate cylinders located within the outer cylinder, and... | 02/23/1988 |
| 4707992 | Microwave radiating antennae hydraulic adjustment apparatus and method A hydraulic adjustment apparatus for use in adjusting and positioning microwave radiating antenna or any other treatment monitoring device is disclosed. The hydraulic adjustment apparatus, generally comprises an upper portion having a box-like member suit... | 11/24/1987 |
| 4691617 | Multi-section sweep cycle compaction cylinder A triple action, multi-segment, telescoping hydraulic ram comprising a plurality of coaxially nested, extensible cylinders adapted to be selectively extended or retracted, and a pair of lower diameter, sweep cycle cylinders adapted to be operated independ... | 09/08/1987 |
| 4678100 | Variable flow rate dispensing valve assembly A material dispensing valve finding particular application in the robotic dispensing of sealants, adhesives, etc. in a desired pattern on a workpiece. The dispensing valve comprises a unique actuating arrangement wherein back to back pancake cylinders are... | 07/07/1987 |
| 4651906 | Arrangement for applying adhesive medium, particularly for leather and shoe articles An arrangement for applying an adhesive medium, particularly for leather and shoe articles, has an adhesive medium applying nozzle and a nozzle needle member arranged to close and to open the nozzle. A driver connects one end of the nozzle needle member w... | 03/24/1987 |
| 4575976 | Extension and retraction system for boom apparatus An extension and retraction system for a multiple section, telescoping boom apparatus of the type utilized for raising and lowering a work platform or basket. The innermost longitudinally movable section is carried by a longitudinally inextensible or base... | 03/18/1986 |
| 4559895 | Positioning device A positioning device capable of positioning a rod with a first piston fixed thereto into one of four positions selectively by means of a second piston disposed within a chamber A formed in a large-diameter cylinder portion and first, third and fourth pist... | 12/24/1985 |
| 4549578 | Coded fluid control system A fluid control system 10 and selector valve 24 for use therein, for controlling a plurality of fluid actuated elements 12, such as valve operators. The fluid actuated elements are controlled from an operating station 52, which is located remotely from th... | 10/29/1985 |
| 4531450 | Multi-stage actuator A two-stage actuator comprises a pair of axially aligned bellows molded from a thermoplastic material and connected at their adjacent ends by a molded link section integral with the bellows. The other end of one of the bellows is designed to be connected ... | 07/30/1985 |
