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Actress Jamie Lee Curtis is a patented inventor - she created a diaper equipped with a premoistened baby wipe. And that's no act!
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| Number | Title | Issue Date |
| 4342548 | Screw having a V-shaped groove profile for cooperating with a pinion in a compression or expansion machine A tool having only an end cutting-edge carries out a first movement of penetration into a screw blank so as to produce a groove having flanks substantially parallel to the pinion axis. The tool-holder is angularly displaced with respect to the spindle whi... | 08/03/1982 |
| 4321022 | Inter-engaging threaded rotor and pinion machine with multi-edged pinion tooth flanks A compressor or expansion machine for fluids comprises a rotor, a casing at least partially surrounding the rotor and a pinion which is rotatable about an axis which is not parallel to the rotor axis. The rotor is provided with helical threads having cres... | 03/23/1982 |
| 4285644 | Expansion or compression machine with interengaging members rotating on perpendicular axes A machine of positive displacement type for the expansion or compression of elastic fluids, wherein torque created or applied effects directly the power shaft, bearings of the power shaft are loaded only by weights of corresponding rotary masses, sealing ... | 08/25/1981 |
| 4274814 | Rotative machine for fluids Rotative machine for fluids comprising a disc or stator with spiral-like ribs limiting channels between an inlet and an outlet for fluids and, mounted for rotation in relation to the said disc, a rotor cooperating slidingly with the said disc so as to def... | 06/23/1981 |
| 4261691 | Rotary screw machine with two intermeshing gate rotors and two independently controlled gate regulating valves This invention relates to a rotary fluid machine (e.g. a compressor) of the single screw type, the single screw cooperating with rotary toothed gate rotors to define fluid-filled chambers whose volumes vary as the screw rotates. The invention is concerned... | 04/14/1981 |
| 4252511 | Rotary compressor or motor with rotors having interengaging blades and recesses The invention concerns an improvement in the rotary devices disclosed in U.S. Pat. Nos. 3,101,700 and 3,176,908 wherein conjointly rotated bladed and recessed rotors with interengaged blades and recesses, alternately converge and diverge with the blades a... | 02/24/1981 |
| 4239469 | Seals for a rotary machine An improved seal apparatus for a rotary machine including a rotary internal combustion engine. The machine generally comprises a rotor rotatably disposed in a circular working section in a hollow machine housing, a divider valve, and for an internal combu... | 12/16/1980 |
| 4227867 | Globoid-worm compressor with single piece housing An air compressor of the globoid-worm type having a rotor formed with a plurality of threads in meshing relation with two oppositely arranged star pinions. The rotor and star pinions are arranged in a single piece housing which incorporates all openings a... | 10/14/1980 |
| 4184813 | Fluid rotating machine with multiple displacement In a rotative machine for fluid circulating between an inlet and an outlet comprising a plate with spiral-like passages formed by rib members, the extremities of the passages emerging into a central chamber and into a perpheral chamber, respectively, and ... | 01/22/1980 |
| 4179250 | Thread construction for rotary worm compression-expansion machines A rotary worm fluid working machine in which a casing enclosed rotor, cooperable with one or more rotary pinions, is provided with a plurality of spiral thread grooves each having convergent side surfaces so that teeth on the pinion wheel enter the thread... | 12/18/1979 |
| 4105378 | Sealing arrangement A single screw, gate rotor machine used as a gas compressor in which compressible fluid is fed to the machine through a low pressure inlet and exhausted through a high pressure outlet and in which an effective seal between the screw and the casing at an e... | 08/08/1978 |
| 4074957 | Screw compressors A single screw, gate rotor machine in which compressible fluid is fed to the machine through a low pressure inlet and exhausts through a higher pressure outlet, in which an unloading valve is provided in the casing adjacent to the high pressure side of th... | 02/21/1978 |
| 4043704 | Double-acting rotary expansible chamber pump adaptable to series or parallel operation In a double-acting rotary compressor having two compression spaces each constituted by at least one variable-volume compression chamber which is put into communication first with the suction enclosure and then with the discharge enclosure, the power consu... | 08/23/1977 |
| 4036567 | Globoid worm type rotary machine In a globoid worm type compressor or expander comprising a casing, a globoid worm rotor in the casing and pinions meshing with the worm rotor, provision is made to effect sealing between the thread of the worm and each tooth of the pinions. The arrangemen... | 07/19/1977 |
| 4028016 | Rotary displacement compressor with capacity control A rotary displacement compressor having a driven cylindrical rotor inside a casing provided with spirally-extending grooves, and at least one gear in sealing engagement with the teeth of the rotor in which the axis of rotation of the gear intersects the a... | 06/07/1977 |
| 4013046 | Rotary engine A rotary engine utilizing hydrocarbon fuel having a circular rotor with one or more spaced pistons which are in sealing relationship with a generally circular torus. One or more compression expansion valves which rotate about an axis tangent to the torus ... | 03/22/1977 |
| 4005682 | Rotary internal combustion engine The disclosure relates to a rotary machine, the basic elements of which are generically adapted for use as a two-stage pneumatic compressor or as a four-cycle combustion engine or as a two-cycle combustion engine. The basic combination of elements of the ... | 02/01/1977 |
| 4003348 | Rotary internal combustion engine A rotary internal combustion engine which comprises a casing, a main shaft journalled in said casing, a rotor mounted on said main shaft for rotation therewith and having in its periphery alternate twisted and sloped recesses and walls, shafts mounted in ... | 01/18/1977 |
| 3945778 | Compressors and expansion machines of the single worm type A machine for compressing or expanding fluids in which a globoidal worm, having a plurality of threads with crests circumscribed by a surface generated by a rectilinear line and in meshing engagement with at least one toothed pinion, cooperates with a cas... | 03/23/1976 |
| 3932077 | Rotary interengaging worm and worm wheel with specific tooth shape The crest of a projecting helical thread formed on a rotor is located on a surface of revolution with respect to the rotor axis and cooperates in a fluid-tight manner with a stationary casing which surrounds the rotor. At least one toothed sealing wheel i... | 01/13/1976 |
