Bizarre Patents
Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 7421782 | Method for manufacturing internal combustion engine piston A method is provided for efficiently manufacturing a high quality internal combustion engine piston having an annular cavity allowing for good circulation of cooling fluid. An annular groove is formed at the circumferential edge of the top face of a piston crown, or... | 09/09/2008 |
| 7343849 | Cylinder apparatus A piston, which is provided in a cylinder tube, is connected to a pair of guide rods by the aid of a plate. The guide rods are arranged displaceably in the axial direction along guide holes of the cylinder tube. The displacement of the piston is guided by the guide ... | 03/18/2008 |
| 7240607 | Removable end plug A pressure assembly including a cylinder, an end plug and a split ring band. The cylinder has an end, an inner surface and an outer surface. The end plug is inserted into the end of the cylinder, the end plug having an outer surface that is in partial contact with t... | 07/10/2007 |
| 6978526 | Structure of a rivet nut gun A structure of rivet nut gun having a body, a handle and a pressure cylinder. The top of the handle is furnished with a mounting base having a through cylindrical hole. The lower end of the handle is furnished with a base surface for mounting the fastening disk. The... | 12/27/2005 |
| 6454241 | Gate valve and cylinder apparatus A gate valve in which the structure is simplified and inexpensive, movement of a valve body is smooth and high in speed, a force of inclination moving the valve body is strong, and a sealing property of an opening portion can be improved. The gate valve h... | 09/24/2002 |
| 5974948 | Linear actuator A piston and cylinder assembly for use in actuating a locating pin for sheet metal provides stability for a pin mounted thereon against side to side movement and rotation. To this end the assembly includes a cylinder body assembly with an internal bore an... | 11/02/1999 |
| 5806314 | Pressurized cylinder and booster in a low volume pressure circuit A pressure-driven cylinder having a piston sliding within a sealed housing chamber between a pair of opposed side-end walls in a piston chamber. At least one chamber wall has a moveable portion of an end wall integrally connected to and axially spaced awa... | 09/15/1998 |
| 5778760 | End cap for intermediate use in cylinder assembly and method A multiple piston and cylinder assembly is illustrated utilizing first and second transversely bifurcated segments (A) and (B) for retention by an intermediate snap ring (D) installed within a single groove (C) facilitating a sealing abutting relation bet... | 07/14/1998 |
| 5701801 | Mechanically redundant actuator assembly In a mechanically redundant actuator system, the actuator has a structurally redundant members for attaching it between a stationary anchor point to a movable control surface. Specifically the actuator consists of a cylinder body, a double action piston w... | 12/30/1997 |
| 5564993 | Continously-variable-ratio transmission of the toroidal-race rolling-traction type A roller-control unit for a continuously-variable-ratio transmission of the toroidal-race rolling-traction type, in which the roller carriage (10, 14) is connected by a pivotal joint (30) to the piston (15) of a hydraulic piston-and-cylinder unit (15, 16)... | 10/15/1996 |
| 5547352 | Crankshaft driven reciprocating piston pump having plural guide rods The pump is formed by a body having a cavity with a cylindrical chamber in which a piston is reciprocated toward and away from an inlet and outlet aperture. A crank shaft extends through an aperture formed through the piston transverse to its axis and thr... | 08/20/1996 |
| 5495792 | Double acting hydraulic cylinder with improved lubrication and piston rod guides Disclosed is a double piston rod type hydraulic cylinder having a pair of pressure chambers containing piston rods that reciprocate in response to changes of the pressure of hydraulic fluid contained in both pressure chambers. This hydraulic cylinder is u... | 03/05/1996 |
| 5471909 | Fluid cylinder A fluid cylinder, particularly for steering a marine outboard motor, has a tubular body portion, and a piston rod and a piston movable relative to the body portion. First and second end plugs engage open end portions of the body portion and at least one e... | 12/05/1995 |
| 5417144 | Power transmission device for linear movements Power transmission device for linear movement, comprising a principal member (2), which is movable along a displacement path, and a housing (1) which presents bearing means (10) for the movement of the member along the displacement path. A guide member (3... | 05/23/1995 |
| 5341725 | Twin piston power cylinder A power cylinder (10) has two pistons (12, 20) slidably mounted within separate cylinders (14, 22) to define inner and outer chambers (16, 18; 24, 26) within each cylinder. One or more rods (28) are coupled between the pistons. The outer chambers (18, 26)... | 08/30/1994 |
| 5255591 | Fluid powered indexing apparatus An indexing apparatus (10) having a pair of concentric cylinders (12, 14) with the outer concentric cylinder (12) being fixed against longitudinal movement and the inner cylinder (14) mounted for reciprocal movement relative to the fixed outer cylinder (1... | 10/26/1993 |
| 5165322 | Three position power cylinder An assembly for moving objects by mechanical linkages has a power cylinder ith a shoulder at the juncture of a small bore and a large bore and with ports adjacent each end and one adjacent the shoulder. A shaft extends through the cylinder with a larger di... | 11/24/1992 |
| 5098071 | Die spring apparatus A compressed gas and a liquid are contained in a cylinder. A liquid chamber containing the liquid and a gas chamber containing the gas are divided by a metallic bellows. The liquid chamber is situated on the side of an open end of the cylinder. A rod is i... | 03/24/1992 |
| 5070769 | Pneumatic linear vibrator A pneumatic linear vibrator comprises a piston guide sealed on one side and delimited by detachable end parts (14,16), a piston (10), a sound-absorbing pipe (52) which forms the housing, and means for supplying and removing a gaseous or vaporized pressure... | 12/10/1991 |
| 5014602 | Hydraulic cylinder unit capable of being set in three positions A hydraulic cylinder that is capable of being set in three positions utilizing a movable cylinder with a fixed main piston and auxiliary pistons slidably mounted within the cylinder. Right and left fluid chambers are defined, within the cylinder, by the m... | 05/14/1991 |
| 4939983 | Fluid pressure operated positioning apparatus A fluid pressure operated positioning apparatus has a cylinder (1), formed as an annular cylinder, with an outer cylinder wall (2) and an inner cylinder wall (3) coaxial with and spaced apart radially from the outer cylinder wall. In the annular cylinder,... | 07/10/1990 |
| 4940104 | Power-assisted steering apparatus A power-assisted steering apparatus of the type which includes a control valve arranged to control hydraulic fluid under pressure supplied to a hydraulic power cylinder from a hydraulic pump therethrough in response to the driver's steering effort applied... | 07/10/1990 |
| 4922805 | Fluid actuated cylinder A fluid actuated cylinder is provided having a piston and piston rod combination disposed in a tubular casing having a nose end and tail end. The piston is disposed on the piston rod spaced from both ends of the rod, the outer end extending through a bear... | 05/08/1990 |
| 4889039 | Gas compressor with labyrinth sealing and active magnetic bearings The invention, a high-pressure, reciprocating, gas compressor, employs labyrinths to create gas sealing, annular, air dams between the piston and cylinder bore, and piston rod and an aperture in an end wall or closure of the cylinder through which the rod... | 12/26/1989 |
| 4771678 | Piston locking device for double acting hydraulic cylinder The double acting hydraulic piston and cylinder assembly of the present invention utilizes a unique fastening mechanism for fastening the piston to the cylinder rod. The piston has a rod receiving opening through which the piston rod is fitted. The piston... | 09/20/1988 |
| 4685384 | Fluid actuator including composite cylinder assembly Fluid actuator includes a composite cylinder having circumferential hoop stress windings wrapped about a liner member forming the piston chamber wall, and longitudinal tension windings extending from the outboard end of the cylinder along one side thereof... | 08/11/1987 |
| 4665558 | Fluid-operated, linear-rotary, robot-like, actuator This is a fluid-operated linear-rotary robot-like actuator reconstructed from a standard fluid cylinder device. The solid piston of the standard cylinder device is replaced with a self-contained vane-operated piston structure formed of spaced piston parts... | 05/12/1987 |
| 4602555 | Preloaded table coupling Table couplings for coupling hydraulic actuators to large shaking tables, such as earthquake simulator tables are preloaded under gaseous pressure to permit the couplings to be nontension carrying couplings, which in turn permits use of hydrostatic slip b... | 07/29/1986 |
| 4597322 | Seal assemblies A seal assembly is arranged to contain leakage of hydraulic fluid passing between a wall opening and a penetrant rod portion passing through the opening. The seal assembly includes a sliding-seal member mounted on a portion of the rod for sliding movement... | 07/01/1986 |
| 4555979 | Fluid-powered multiple pistonrod lift unit A fluid-powered lift unit having a plurality of pistonrods attached to a piston which translates axially but within a tube. The tube is provided with an end cap and a base which in conjunction with the piston defined two fluid-tight regions. The pistonrod... | 12/03/1985 |
| 4523515 | Valve operating cylinder unit In order to enable a piston cylinder unit 1,2 with air entry through a hollow shaft 6, to be operated in either mode of operation with a single type of shaft, it is proposed in accordance with the invention to manufacture the shaft 6 in three parts, namel... | 06/18/1985 |
| 4522113 | Device for accommodating bending of a cable A device for accommodating bending a cable or the like by remote control is proposed. It has a cylinder with a piston rod, and two holders coupled to the cylinder and the piston rod at each end thereof. The holders through which a cable runs are bent by r... | 06/11/1985 |
| 4499812 | Servo-motor for power-assisted braking The two chambers (8, 9) on either side of the movable wall structure forming a piston (7) are each sealingly delimited internally by a first and a second flexible impervious walls (23) which connect the central hub part (11) incorporating the control valv... | 02/19/1985 |
| 4491060 | Cylinder connection A cylinder for a valve actuator wherein the cylinder body has lugs connectable to and disconnectable from like cylinder head lugs by less than one turn rotation. Resilient seals seal the head to the body when connected, and the connection is releasably lo... | 01/01/1985 |
| 4467705 | Fluid-actuated drive Within a cylinder of a double-acting piston-and-cylinder unit there is displaceably arranged a piston. A spatially moveable piston rod in the form of a universal or ball pivot-link chain is connected with the piston. The piston rod is lengthwise guided by... | 08/28/1984 |
| 4433614 | Vacuum booster device A highly durable and light-weighted vacuum type brake booster device including a booster shell, a booster piston axially slidably accommodated in the booster shell to divide the interior thereof into a first chamber communicating with a vacuum source and ... | 02/28/1984 |
| 4418611 | Pneumatic servo booster A pneumatic servo booster including a shell housing having front and rear shells, a valve body incorporating therein, a valve mechanism slidably supported by the rear shell, a partitioning member cooperating with the valve body for partitioning the interi... | 12/06/1983 |
| 4414881 | Hydraulic control device The invention provides a hydraulic servo-control device which performs the same functions as a conventional device but is much cheaper to manufacture and maintain. For this purpose, the control device comprises a cylinder device formed by a cylinder and a... | 11/15/1983 |
| 4397219 | Brake booster for automotive vehicles A brake booster for automotive vehicles includes a low-pressure casing which is sealingly subdivided into a low-pressure chamber and a working chamber by an axially movable wall. The low-pressure chamber includes a casing port adjacent the low-pressure ch... | 08/09/1983 |
| 4337691 | Valve driving apparatus A valve driving apparatus is provided with cylindrical bearing members made of a synthetic resin or a copper alloy and used for a piston rod and for a drive shaft, a lining member made of a synthetic resin for coating the inner wall of an apparatus and a ... | 07/06/1982 |
