Bizarre Patents
Apparatus for Simulating a High Five
A self-righting hand-arm configuration which is adapted to pivot when struck by a user, thereby simulating a "high five."
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| Number | Title | Issue Date |
| 7467514 | System and method for controlling shakability of a work tool A system and method for controlling shakability of a work tool. A series of input commands from a control unit to the hydraulic pump cause the hydraulic pump to cycle between a first displacement (maximum) at a first rate (maximum) and a second displacement (zero) a... | 12/23/2008 |
| 6059228 | Hydraulic system A hydraulic system for retracting into and extending out of the body of an aircraft a landing gear for use in taking off and landing, comprises a housing unit which has a hydraulic pump, a hydraulic actuator, a shuttle valve, an emergency valve, an actuat... | 05/09/2000 |
| 5647208 | Hydraulic pumping unit A Hydraulic Pumping Unit equipped with a flywheel, a high-slip electric motor and a reversible hydraulic pump such that during the downstroke of the Unit, the hydraulic pump operates as a hydraulic motor, accelerating the flywheel and accumulating in this... | 07/15/1997 |
| 4848085 | Oil-well pumping system or the like The invention involves pressure-counterweighted oil-well pumping apparatus in which derrick structure of elemental simplicity involves components which are readily assembled and disassembled, such that a given pumping apparatus can be loaded on a single t... | 07/18/1989 |
| 4790728 | Dual-rigid-hollow-stem actuators in opposite-phase slurry pump drive having variable pumping speed and force A slurry pump has slurry hopper and dual pumping cylinders. The slurry pumping members are driven by opposite-phase actuators. Each actuator has a rigid-hollow-stem partition dividing the space between the actuator plunger and the cylinder into two drive ... | 12/13/1988 |
| 4787071 | Piezoelectric/fluid pressure transducer apparatus A flat, elongate, laminated plate of ceramic piezoelectric material is fixedly mounted on one end to permit movement of the other end responsive to the application of a variable electronic control signal to electrodes on the outer surfaces of the laminate... | 11/22/1988 |
| 4707993 | Pumping apparatus A pumping apparatus is disclosed which uses a reversible, variable displacement hydraulic drive pump capable of pumping fluid under pressure. A hydraulic cylinder enclosing a piston is operatively connected to a port of the hydraulic drive pump. A fluid a... | 11/24/1987 |
| 4546607 | Pumping apparatus A pumping apparatus includes a reversible variable displacement drive pump having two ports and a lifting apparatus connected to one of the ports. The lifting apparatus is designed to fit on the well-head of an oil well and attach to the polish rod of the... | 10/15/1985 |
| 4491055 | Control of continuous reciprocation of a fluid power cylinder The pump or pumps for supplying fluid to the two ends of a double-acting cylinder include a direction control, such as a direction control valve, shiftable between extend and retract conditions. A drive mechanism for the direction control includes a rotar... | 01/01/1985 |
| 4474002 | Hydraulic drive pump apparatus A hydraulic drive apparatus for a wellhead pump jack which utilizes oppositely driven single-acting hydraulic cylinders as actuated by a variable volume pump having flow direction and flow volume controlled by a servo linkage and control lever. The linkag... | 10/02/1984 |
| 4406122 | Hydraulic oil well pumping apparatus The preferred embodiment is directed to an oil well pumping apparatus incorporating a walking beam having a horsehead at one end which connects to the sucker rods in the oil well. The opposite end of the walking beam is supported on a fixed pivot. A hydra... | 09/27/1983 |
| 4187680 | Oil well pump drive An oil well pump drive including a drive unit that is hydraulically actuated by a double-acting hydraulic cylinder to reciprocate vertically. An endless chain is entrained over vertically spaced sprockets carried by the unit, with one flight of the chain ... | 02/12/1980 |
| 4114375 | Pump jack device A pump jack, such as the type capable of use in pumping crude oil from an oil well, the pump jack including a double acting piston and cylinder motor with the piston rod of the motor being adapted to be connected to the polished rod projecting upwardly fr... | 09/19/1978 |
| 3939656 | Hydrostatic transmission pump An improved hydraulic drive system for a doubleacting hydraulic cylinder which drives or rocks the walking beam of an oil well pump. A closed circuit hydrostatic drive system is used to operate the double-acting hydraulic power cylinder unit and includes ... | 02/24/1976 |
| 3932989 | Resonant gas-expansion engine with hydraulic energy conversion An illustrative system is disclosed for use as a rotary-drive engine, utilizing combustible fuel and a hydraulic system of energy conversion. An engine block defines a pair of expansion cylinders (combustion chambers) and an associated concentric pair of ... | 01/20/1976 |
