Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
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| Number | Title | Issue Date |
| 7784392 | Hydraulic locking cylinder The present invention is a hydraulic locking cylinder assembly comprising a bi-directional control relief valve integrated with a piston. More particularly, the present invention is a bi-directional control relief valve for a hydraulic cylinder, fully integrated wit... | 08/31/2010 |
| 7371064 | Hydraulic device for back and forth movement of a machine part, and a clamping unit of an injection molding machine fitted with such a hydraulic device The invention relates to a hydraulic device for the back and forth movement and locking of a machine part, in particular for the opening, closing and locking of an injection molding tool. The hydraulic device comprises a cylinder (1), in which a first pressur... | 05/13/2008 |
| 7347753 | Hydraulic actuation system for a marine propulsion device A hydraulic system for a sterndrive marine propulsion device directs the flow of hydraulic fluid through the body and peripheral components of a gimbal ring in order to reduce the number and length of flexible hydraulic conduits necessary to conduct pressurized hydr... | 03/25/2008 |
| 7325710 | Pneumatic nail gun A pneumatic nail gun includes a gun body having a cylinder therein; a hitting piston disposed in the cylinder; a main air housing collecting high pressure air; a trigger at one end of the main air housing; a main passage disposed at a peripheral portion of the cylin... | 02/05/2008 |
| 7322501 | Fastener driving tool A cylinder is constituted such that the cylinder includes a large diameter portion constituted by forming a portion thereof brought into contact with an O ring by a diameter larger than a diameter of other portion when a piston is disposed at an upper dead center an... | 01/29/2008 |
| 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 |
| 7237471 | Continuously lockable adjustment device A continuously lockable adjustment device for immobilizing elements which are movable relative to each other includes a stepped cylinder having a first cylinder step and a second cylinder step, the second cylinder step having a larger cross-sectional area than the f... | 07/03/2007 |
| 7231865 | Swiveling motor A swiveling motor for a divided stabilizer in an area of a vehicle axle, in which a housing is closed off in a region of its end surfaces by lids. A differential pressure regulating valve located coaxially with the housing and having at least one electromagnet, and ... | 06/19/2007 |
| 7152719 | Adjustable-length compression spring and seat provided therewith A compression spring comprises a casing in which a piston is arranged for displacement, the piston being mounted on a piston rod. In the casing provision is made for two sectional casing chambers which are filled with pressure fluid, at least one of which being defi... | 12/26/2006 |
| 7143684 | Hydraulic actuator having disc valve assembly A hydraulic actuator comprises piston that divides the interior into a piston chamber and a rod chamber and a valve disc assembly to regulate flow of hydraulic fluid between the piston chamber and the rod chamber through a passage in the piston. The disc valve assem... | 12/05/2006 |
| 7137586 | Hydraulic spooler Methods and apparatus for spooling a flexible member onto a drum with a spooler assembly. In certain embodiments, a spooler assembly comprises a spooler arm operable to guide a flexible member onto a drum rotating about a drum axis. A first actuator moves the spoole... | 11/21/2006 |
| 7128625 | Tilt and trim system of outboard drive of propulsion unit A tilt and trim system for the outboard drive of a marine propulsion unit wherein the popping up action is effectively damped without positive stops that could cause abrupt stopping and possible damage. ... | 10/31/2006 |
| 7104058 | Vehicle braking system In a vehicle braking system, a backup piston pushes a master piston directly from behind when hydraulic pressure of a boosted hydraulic pressure chamber decreases. The backup piston has a piston body which is slidably fitted in a casing, and a pusher which is slidab... | 09/12/2006 |
| 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 |
| 7080589 | Hydraulic cylinder The invention relates to a hydraulic cylinder comprising a piston rod bearing at least one tool receiving element. Said hydraulic cylinder is characterized by an automatic disconnection device which is controlled in a hydraulic-mechanical manner, with a medium for t... | 07/25/2006 |
| 6997365 | Contact trip assembly for fastening tool A fastening tool including a housing, a magazine connected to the housing for storing a fastener, a driving mechanism disposed within the housing for driving the fastener into a workpiece, a trigger assembly pivotally attached to the housing for activating the drivi... | 02/14/2006 |
| 6901969 | Plugs for use in conduits to reinforce air conditioning ducts, and methods of manufacture and use A method and apparatus for reinforcing duct work is provided. In one embodiment, a reinforcement comprises a conduit having a first end and a second end. A pair of plugs is insertable into the first and second ends of the conduit. Each of the plugs has a groove exte... | 06/07/2005 |
| 6764286 | Piston pump with pump inlet check valve A piston pump comprises cylinder attached within a cavity of a pump housing. An outlet check valve seat is defined about an outlet of the cylinder. A piston is slidably received in a bore of the cylinder and has a first passageway formed therein. A cylinder head enc... | 07/20/2004 |
| 6746220 | Pressure fluid-delivery device A pressure fluid-delivery device comprising a cylinder, a piston and a reservoir for a fluid. A V-seal is mounted in an annulus between the cylinder and the piston. An axial movement of the piston forwards relative to the cylinder results in a delivery of a pressure... | 06/08/2004 |
| 6722866 | Pump system for delivering cryogenic liquids A pump system for delivering cryogenic liquids is proposed that is suitable, for example, for refueling motor vehicles with H2. It consists of a container for receiving the cryogenic liquid, in which at least one pump is arranged that is designed as a rec... | 04/20/2004 |
| 6679160 | Dual air actuator for operating an air chuck An actuator is provided that includes an operating shaft positioned within a chamber for movement between a first position and a second position, and a longitudinal bore for delivering air to an air chuck. A piston is disposed around the operating shaft a... | 01/20/2004 |
| 6666663 | Gas suction apparatus for a reciprocating compressor with a piston inertia valve A gas suction apparatus for a reciprocating compressor, including a piston having a gas flowing passage where refrigerant gas flows, being inserted in the compression space formed in a cylinder enabling linear reciprocating movement, a fixing means combin... | 12/23/2003 |
| 6487955 | Piston structure of tilt apparatus for marine propulsion device A tilt apparatus for a marine propulsion device structure having a piston constituting a cylinder apparatus with a shock blow valve and a return valve, the return valve attaching a valve body to a return hole provided in the piston, and a valve body holdi... | 12/03/2002 |
| 6463841 | Lift cylinder To facilitate assembling work of a check valve to improve workability at the time of assembling a lift cylinder. In a lift cylinder, a check valve 4 disposed in a shaft center part of a piston 2 has a valve seat member 41, a poppet valve, a bias spring 43 and ... | 10/15/2002 |
| 6434931 | Hydraulic brake master cylinder with controlled center port valve gap and method of assembly A hydraulic brake master cylinder assembly includes a central or center port compensation valve mounted in respective brake actuator pistons and having a variable length stem which may be adjusted to predetermine the amount of valve travel between open an... | 08/20/2002 |
| 6220142 | Manually operated emergency control actuation device An actuation device for emergency operation of a hydraulically controlled actuator includes a housing with a fluid container connected to the actuator via a connection point and to a hydraulic supply circuit of the actuator via another connection point. A... | 04/24/2001 |
| 6186043 | Cushion hydraulic cylinder A cushion hydraulic cylinder is provided with a series of longitudinally separated metering orifices in the wall of the cylinder through which exhausted fluid is expelled. As the piston extends towards these metering orifices a seal sequentially cover and... | 02/13/2001 |
| 6185937 | Master cylinder with hydraulic reaction independent of viscosity A master cylinder with hydraulic reaction. The master cylinder having a housing with a working chamber (12) therein in which slides a hollow main piston (3). The main piston (3) has a bore (130) for retaining a reaction piston (14) to define a reaction ch... | 02/13/2001 |
| 6176170 | Hydraulic actuator with shock absorbing capability A shock absorbing hydraulic actuator comprises a cylinder with first and second pistons slidably disposed therein. The first and second pistons are moveable relative to each other. A poppet is supported by the first piston and is moveable relative to the ... | 01/23/2001 |
| 6170383 | Piston bypass valve A bypass valve is disclosed which relieves pressure on the end cap and rod guide of a cylinder as the piston approaches them. The bypass valve has a cylindrical body with end caps on each end, the end caps serving as stop members. The bypass valve is prov... | 01/09/2001 |
| 6161465 | Pneumatic or hydraulic control motor with a shutoff device A hydraulic shutoff device in the end positions of a servo cylinder is provided to prevent direct hard contact between the working piston (31) and the limit stops (47, 48) under working pressure and to enable withdrawal from end positions with hydraulic a... | 12/19/2000 |
| 6161466 | Piston pump for a vehicle brake system The invention relates to a piston pump (10) with a piston (20) axially displaceable in a bush (12). In order to keep the piston (20) captive in the bush (12), the invention proposes that an annular loss-prevention means (90), with conically protruding spr... | 12/19/2000 |
| 6102679 | Air compressor The air compressor of the present invention includes an air storage tank with a hollow cylinder having a closed lower end mounted in the upper wall of the tank, so as to project within the interior of the tank. A drive motor mounted on the tank has a pist... | 08/15/2000 |
| 6085634 | Power steering cylinder assembly This power steering cylinder assembly consists of a hydraulic cylinder which is closed at each end. A piston rod travels through the center of each end has a piston assembly fastened on it. The cylinder has holes in each end for fluid to enter and move th... | 07/11/2000 |
| 6050171 | Hydraulic power steering gear assembly with unloading value A hydraulic power steering gear assembly includes an assembly body defining a piston chamber having opposed chamber ends with plunger passages formed in the ends, a reciprocating piston and a chamber having opposed ends and a passage extending between the... | 04/18/2000 |
| 6041690 | Pneumatic control unit for at least partial opening of a movable body part of a motor vehicle A pneumatic drive unit is provided for partially opening a vehicle body part such as a trunk lid. The pneumatic drive unit includes a working chamber which in use applies pressure to move a control member which engages a contact surface of the vehicle bod... | 03/28/2000 |
| 5915679 | Support element for securing a work piece on a supporting surface A support element for supporting or holding a work piece on a mounting surface, for example in a machine tool, has a support or pin movably mounted in a housing. The pin is moved into contact with a work piece by an airstream, held in work piece contact b... | 06/29/1999 |
| 5906150 | Valves incorporated structure in a tension adjusting cylinder body for a crawler type vehicle Valves 4,5 are disposed in such a portion which is defined in an end portion of a piston 30 of an adjusting cylinder body 1 and which does not contact a load giving body 7, thereby preventing deformation by compression caused in incorporation positions of... | 05/25/1999 |
| 5873447 | Hydraulic cylinder for grain augers A grain elevator auger uses a hydraulic cylinder incorporating a checkvalve. This checkvalve enables the volume of hydraulic fluid required to raise the elevator to be reduced to that required to replace the extended piston rod, instead of the full volume... | 02/23/1999 |
| 5802953 | Power tilt cylinder device In a power tilt cylinder device 100, a hydraulic fluid is supplied to the opposite piston side space 22B of a free piston 25, in the upper limit position of upward tilting, which is performed for discharging the hydraulic fluid from the first chamber 21, ... | 09/08/1998 |
