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An automatic bed maker which uses the expansion of inflatable bladder to straighten, align, and tuck-in bed-cover assembly.
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| Number | Title | Issue Date |
| 7361002 | Oil pump An oil pump to be insatalled to an engine of an automotive vehicle. The oil pump includes a section defining a suction port and a section defining a discharge port. A main unit of the oil pump has a section defining a plurality of pump chambers. Volume of each pump ... | 04/22/2008 |
| 7179070 | Variable capacity pump/motor A variable capacity pump/motor has a meshing internal and external gear set disposed between an upper mandrel and a lower mandrel, each including a flange extending towards the gears to divide a pump/motor chamber into suction and discharge chambers. The outer gear ... | 02/20/2007 |
| 7153110 | Variable volume flow internal gear pump Rotational pump with variable volume flow, comprising a pump housing having a suction connection and a pressure connection, an outer rotor with inner toothing which is rotatably disposed inside the housing, and an inner rotor with outer toothing which is eccentrical... | 12/26/2006 |
| 6887057 | Minimal contact seal positive displacement device method and apparatus A positive displacement device that incorporates two rotors that are offset from collinear and each comprising a first and second set of vanes where the engagement surfaces of the first set of vanes are adapted to only engage when the rotors are in the top dead cent... | 05/03/2005 |
| 6764283 | Internal gear wheel pump An internal gear pump for pumping fuel from a suction conduit (18) into a pressure conduit (19) has a pump housing (1) in which an internal ring gear (5) and an externally toothed pinion (3), the latter driven by a drive shaft (... | 07/20/2004 |
| 6126420 | Infinitely variable ring gear pump An infinitely variable ring gear pump comprising a stationary casing, an internal rotor (3) in said casing rotatably supported and driven by means of a shaft (2) and an external rotor (4) likewise rotatably supported, meshing with the internal rotor (3), ... | 10/03/2000 |
| 5513969 | Rotary piston machine having engaging cycloidal gears The invention comprises a rotary piston machine, which functions as a pump, compressor or engine, and in which the cogs (45) of teeth (46) of a rotating control part travel over a cycloidal surface (44) of a cycloidal part (42) in order to define work cha... | 05/07/1996 |
| 4492539 | Variable displacement gerotor pump A gerotor pump or rotary fluid power transmission having a displacement control device for changing the volume of fluid delivered. The displacement control device operates by changing the eccentric position between the inner and outer rotors. The inlet an... | 01/08/1985 |
| 4413960 | Positionable control device for a variable delivery pump A control device for a positionable pump has a body with inner and outer diameters eccentric to each other mounted in the pump housing bore and is actuated by hydraulic pressure in one angular direction. An opposing spring force acts in the opposite direc... | 11/08/1983 |
| 4178143 | Relative orbiting motion by synchronoously rotating scroll impellers A positive displacement pumping action is obtained from two meshed scroll ne impellers by mounting the two impellers on parallel but offset drive shafts and rotating them synchronously in the same direction.... | 12/11/1979 |
| 4097204 | Variable displacement gear pump An internal-external gear pump wherein the fluid displacement thereof is variable. The internal gear is rotatably driven by a drive shaft about a fixed axis and the external gear is rotatably driven by the internal gear about a controlled movable axis ecc... | 06/27/1978 |
| 4084926 | Rotary gear pump A rotary gear pump comprising two excentrically arranged gear wheels of different sizes, of which the greater gear wheel is rotatably mounted in the generally cylindrical housing of the pump and the smaller gear wheel is mounted upon a shaft which is arra... | 04/18/1978 |