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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 7399171 | Rotary pump for braking device The curvature of a circular arc constituted by a side of a suction groove is made larger than that of a circular arc constituted by a side of a discharge groove. Thus, when the suction groove and the discharge groove are viewed in the axial direction of a drive shaf... | 07/15/2008 |
| 7338264 | Recesses for pressure equalization in a scroll compressor A scroll compressor is provided with spaced grooves in a base of one of the two scroll members. A recess is formed in a wrap tip of the other scroll member. The recess in the wrap tip bridges a space between the grooves of the other scroll member. This bridging equa... | 03/04/2008 |
| 7278839 | Multi-stage vacuum pump A multi-stage vacuum pump includes a plurality of casings connected in series and each casing defining a respective compression chamber, a plurality of partition plates each set in between each two casings. When compressed by rotors at shafts in one compression cham... | 10/09/2007 |
| 7241122 | Internal gear pump with recesses on the gear bearing surfaces A positive-displacement pump, in particular for use in machines or dispensing fluids, including two elements that are with respect to one another and which mesh with one another (20, 30), each of them being rotatably mounted in the pump with centered coupling... | 07/10/2007 |
| 7229261 | Scroll compressor having an annular recess located outside an annular seal portion and another recess communicating with suction port of fixed scroll A surface of a fixed scroll which is opposed to a end plate of an orbiting scroll existing outside of a lap of the fixed scroll is formed with: a substantially annular seal portion which extends such as to have an outer wall surface of the fixed scroll outwardly ext... | 06/12/2007 |
| 7144016 | Dry gas seal A gas seal assembly comprises a pair of mutually rotatable sealing members A, B, each of which has a face adjacent a gap between the two members. One of the members B is urged in a direction attempting to close the gap h which constitutes a leakage path through the ... | 12/05/2006 |
| 7074025 | Fluid delivery device A fluid delivery device, such as a geared machine or a gear pump, with a housing having at least one supply chamber and a displacement unit arranged within the supply chamber. The displacement unit serves to supply a medium to at least one pressure chamber provided ... | 07/11/2006 |
| 7074023 | Scroll compressor A scroll compressor enabling decrease of a flow path loss in a communication groove extending from a suction port toward a suction chamber to decrease a loss of suction power is disclosed. In the scroll compressor, a movable scroll is provided so as to perform a swi... | 07/11/2006 |
| 7048524 | Internal gear pump with recesses on the gear bearing surfaces A positive-displacement pump, in particular for use in machines or dispensing fluids, including two elements that are with respect to one another and which mesh with one another (20, 30), each of them being rotatably mounted in the pump with centered coupling... | 05/23/2006 |
| 6932587 | Gerotor motor with valve in rotor A rotary fluid pressure device having a housing member, a manifold assembly, an internally generated rotor type gerotor set, an end plate, and a rotatably journaled torque transfer shaft interconnected with the gerotor set and extending within the housing member and... | 08/23/2005 |
| 6905321 | Rotary pump for braking apparatus In a rotary pump for a braking apparatus, a discharge trench is formed on an axial direction end surface of a second side plate that forms a mechanical seal. As a result, rotors are pressed back toward a side of a first side plate by a discharge pressure of brake fl... | 06/14/2005 |
| 6896500 | Gear pump A bottom portion of an intake port is provided with a sloped bottom surface formed of a plane such that sloped bottom surface approaches the side surfaces of external teeth and internal teeth from an upstream side to a downstream side in rotational direction of two ... | 05/24/2005 |
| 6817847 | Rotary pump having a hydraulic intermediate capacity with first and second connections The invention relates to a pump with a pump chamber with a rotary-driven pump element mounted, at least one suction and at least one pressure connection opening into the pump chamber and with circulating pumping cells whose volume can be changed, which are connected... | 11/16/2004 |
| 6769889 | Balanced pressure gerotor fuel pump A gerotor pump for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances... | 08/03/2004 |
| 6761547 | Trochoid gear type fuel pump Two-inner gears are overlapped with each other through a partition wall and are eccentrically arranged at an inner peripheral side of an outer gear, and eccentric directions of both the inner gears are shifted from each other by 180° to the opposite side. By this, ... | 07/13/2004 |
| 6544013 | Oil pump apparatus An oil pump apparatus includes an oil pump housing having a first suction port, a second suction port and a discharge port in the circumferential direction thereof. A shape of the end portion in the anti-rotational direction at the second suction port is ... | 04/08/2003 |
| 6481990 | Hydraulically balanced multi-vane hydraulic motor A multi-vane hydraulic motor for accessory drive in which the vanes of a hydraulically balanced rotor are primarily urged into operative engagement with a surrounding cam by forces of the hydraulic fluid in undervane passage produced by an associated hydr... | 11/19/2002 |
| 6280167 | Gear ring pump having a housing wall with a hollow cone recess A gear pump has a gear wheel with teeth on an outer circumference and a second gear ring with teeth on the inside surface. The gear ring is guided in a circular-cylindrical recess of a housing and together with the gear wheel, each rotates about their own... | 08/28/2001 |
| 6241496 | Hermetic rotary compressor The present invention relates to a hermetic rotary compressor. More particularly, since the conventional rotary compressor has problems that the effect of a surge recess for reducing noises due to pressure pulsation is insufficient, and it is impossible t... | 06/05/2001 |
| 6171086 | Scroll compressor with pressure equalization groove A scroll compressor is provided with a pressure equalization groove in the base of one of the scroll members. The pressure equalization groove communicates between the compression chambers at an intermediate pressure. Thus, should one of the two compressi... | 01/09/2001 |
| 6171089 | External gear pump with drive gear seal A metering pump includes a set of externally-toothed gears, with a first of the gears, the drive gear, having a central opening to receive a drive shaft. The gears are supported within a housing defined between first and second housing plates. The first a... | 01/09/2001 |
| 5944499 | Rotor-type pump having a communication passage interconnecting working-fluid chambers A rotor-type pump comprises a housing having a trochoidal curved surface and an intake port and a discharge port. A drive shaft is mounted rotatably about a first axis in the housing. A rotor having a second axis eccentric to the first axis is rotatably m... | 08/31/1999 |
| 5466137 | Roller gerotor device and pressure balancing arrangement therefor A roller gerotor device is disclosed including an outer rotor (39) and an inner rotor (31), and a plurality of rollers (37) serving as teeth. The device includes a housing means (11,45,47) defining a first wear surface (67) disposed axially adjacent first... | 11/14/1995 |
| 5104303 | Internal gear pump with tapered oil pockets in sliding surfaces An internal gear pump includes a casing, a cover mounted to the casing, a pump chamber defined between the casing and the cover, an internal gear slidably arranged within the pump chamber, an external gear rotatably arranged within the pump chamber and ro... | 04/14/1992 |
| 4884956 | Rotary compressor with clearance volumes to offset pulsations A rotary compressor includes a top clearance volume formed between a cylinder chamber and at least one delivery valve. Another top clearance volume, in communication with the cylinder chamber, produces a reverse flow of compressed fluid which generates pu... | 12/05/1989 |
| 4859159 | Spiral compressor with setback portion on radially outer peripheral wall In the displacement machine for compressible media described in the specification, a stationary housing has two spiral displacement chambers and a spiral displacement body is engaged in each displacement chamber. The displacement body extends essentially ... | 08/22/1989 |
| 4737088 | Rotary compressor with oil relief passage A rotary compressor for helium gas has a cylinder defining a closed space therein, a rotor disposed in the closed space for eccentric rotary motion while making a sliding contact with the inner peripheral surface of the cylinder, and a blade slidably moun... | 04/12/1988 |
| 4699577 | Internal gear device with improved rotary valve A gerotor device wherein a body (10) includes high pressure ports (20) that communicate with an inlet (12) and low pressure ports (22) that communicate with an outlet (14). An inner member (42) and an outer member (40) cooperate to define pressure chamber... | 10/13/1987 |
| 4556373 | Supercharger carryback pulsation damping means An improved supercharger or blower (10) of the Roots-type with reduced airborne noise and improved efficiency. The blower includes a housing (12) defining generally cylindrical chambers (32, 34) containing meshed lobed rotors (14, 16) having the lobes (14... | 12/03/1985 |
| 4509905 | Compressor with extended area between suction port and suction groove A compressor includes a rotor with slidable vanes, a cylinder receiving the rotor and vanes and side plates fixed to opposite sides of the cylinder. A suction stream intercepting section is provided in the suction passage between adjacent vane chambers fr... | 04/09/1985 |
| 4470776 | Methods and apparatus for gear pump lubrication A gear pump structure is provided having a housing with a pump chamber, a suction chamber and a discharge chamber communicating with said pump chamber on opposite sides thereof, a suction port and a discharge port in said housing communicating respectivel... | 09/11/1984 |
| 4443166 | Scroll fluid apparatus with an arcuate recess adjacent the stationary wrap A scroll fluid apparatus including two scroll members, with one scroll member having a wrap and an annular portion located outside the wrap and having a height corresponding to the height of the wrap. The annular portion is contiguous at its surface in th... | 04/17/1984 |
| 4439119 | Gerotor machine with commutating valving through the ring gear The invention relates to a fluid pressure operated motor or pump of the type having a gerotor displacement mechanism which normally includes inner and outer wheel and ring gears which in operation have relative rotational and orbital movement therebetween... | 03/27/1984 |
| 4432708 | Scroll type fluid displacement apparatus with pressure communicating passage between pockets A scroll type fluid displacement apparatus is disclosed. The apparatus includes a housing. A fixed scroll member is fixedly disposed within the housing and comprises a first end plate means from which a first wrap means extends. An orbiting scroll member ... | 02/21/1984 |
| 4411607 | Internal gear machine with rotary pressure balanced valve disc A hydraulic internal gear machine includes a positive displacement unit for working liquid constituted by a rotary outer gear and an inner gear surrounding the outer gear and being in mesh therewith at one point to define a plurality of increasing liquid ... | 10/25/1983 |
| 4384828 | Sliding vane compressor A sliding vane compressor for use in refrigeration systems includes a rotatable hollow shaft, a cylindrical compressor rotor which surrounds the shaft, end covers enclosing the compressor rotor and a pair of vanes disposed within the rotor to compress a w... | 05/24/1983 |
| 4231726 | Gear pump having fluid deaeration capability A gear pump (10) has a pair of intermeshing gears (12,14) located in a corresponding pair of intersecting cavities (16,18) in a housing (20), and air bleed passages (60) are defined in the housing (20) for passing entrained air collected in the fluid at t... | 11/04/1980 |
| 4207038 | Power steering pump A power steering pump having a cam with an internal cam surface defining pumping arcs, a rotor in said cam, pumping elements preferably in the form of slippers carried by the periphery of the rotor in sliding engagement with the pumping arcs, flow control... | 06/10/1980 |
| 4199305 | Hydraulic Gerotor motor with balancing grooves and seal pressure relief A hydraulic motor of the Gerotor-type which is designed for rotation in both the clockwise and the counterclockwise direction and which includes a pair of relief valves arranged to protect the motor shaft seal, irrespective of the chosen direction of rota... | 04/22/1980 |
| 4193745 | Gear pump with means for dispersing gas into liquid A gear pump for dispersing a gas into a liquid is provided with mixing means for improving the uniformity of the dispersion. In preferred form, the mixing means comprises a series of fixed, shallow, blind cavities that open to the pumping cavity between t... | 03/18/1980 |
