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| Number | Title | Issue Date |
| 7310965 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 12/25/2007 |
| 7159412 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 01/09/2007 |
| 7128544 | Crescent seal for the cylinder of a vane motor A vane motor is modified to increase the sealing effectiveness of the gap made at the interface of the spindle and cylinder by undercutting the cylinder a predetermined amount and distance so as to increase the effectiveness of the spindle to cylinder gap and to dec... | 10/31/2006 |
| 7073346 | Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 07/11/2006 |
| 6623261 | Single-degree-of-freedom controlled-clearance univane™ fluid-handling machine A rotary vane apparatus where the rotor has a rotational axis and carries at least one vane which is supported by a vane guide apparatus for rotation about a stator axis which is spaced from the rotor axis a preselected amount and where both the rotor and... | 09/23/2003 |
| 6461129 | Scroll type compressor apparatus with adjustable axial gap A scroll type apparatus for fluid displacement is disclosed. In one embodiment, the apparatus includes an adjustment mechanism capable of being adjusted after assembly of the apparatus to close an axial gap between scroll members and account for manufactu... | 10/08/2002 |
| 6457958 | Self compensating adjustable fit progressing cavity pump for oil-well applications with varying temperatures The present invention provides an adjustable rotor and/or stator, so that the interference fit and/or clearance can be adjusted. The rotor and/or stator are tapered to provide a difference in fit between the rotor and stator by longitudinal adjustment of ... | 10/01/2002 |
| 6358027 | Adjustable fit progressive cavity pump/motor apparatus and method The present invention provides an adjustable rotor and/or stator, so that the interference fit and/or clearance can be adjusted. The rotor and/or stator are tapered to provide a difference in fit between the rotor and stator by longitudinal adjustment of ... | 03/19/2002 |
| 6328547 | Rotary pump A rotary pump has a simple construction by omitting a transmission shaft on the side of a motor and whereby makes a cost of the rotary pump as low as possible, with maintaining feature that assembling and disassembling is facilitated. The rotary pump has ... | 12/11/2001 |
| 6280165 | Scroll type fluid machine A scroll type fluid machine which can practically exhibit an appropriate meshing condition between an orbiting scroll member and an unorbiting scroll member and which can enhance the energy efficiency. A positioning means for positioning the unorbiting sc... | 08/28/2001 |
| 6257839 | Double screw rotor assembly with electrically controlled clearance adjustment means A double screw rotor assembly includes two screw rotors meshed in a bushing inside a casing. The threads of the screw rotors have a constant pitch, and define with the bushing a plurality of air chambers in the pitch. The volumes of the air chambers reduc... | 07/10/2001 |
| 6257854 | Double screw rotor assembly having means to automatically adjust the clearance by pressure difference A double screw rotor assembly includes two screw rotors meshed in a bushing inside a casing. The threads of the screw rotors have a uniform pitch, and define with the bushing a plurality of air chambers in the pitch. The volumes of the air chambers reduce... | 07/10/2001 |
| 6179590 | Scroll fluid apparatus having axial adjustment mechanisms for the scrolls A scroll mounting member for mounting a drive scroll therein is secured to the left end of a drive shaft coupled to a motor. A rotary bearing is fitted on the outer periphery of the scroll mounting member, and its outer periphery is secured to a scroll ho... | 01/30/2001 |
| 6152717 | Internal gear pumps An internal gear pump includes in a pump housing an outer rotor including an internal gear portion on the inner periphery, and an inner rotor being eccentrically disposed with respect to the outer rotor and including an external gear portion on the outer ... | 11/28/2000 |
| 6095781 | Timed element, high pressure, industrial rotary lobe pump A dual shaft, timed element high pressure industrial rotary lobe pump is provided. Lubricated sleeve bearings are located adjacent to the pumping elements. If the sleeve bearings are disposed on both opposing sides of the pumping elements, the lobe pump o... | 08/01/2000 |
| 5975867 | Bearings and a method for mounting them in screw compressor Rolling element bearings capable of both axial and radial restraint are readily removably mounted on the shaft of each screw rotor so as to allow a clearance type radial fit between the bearing and shaft. A washer engages the inner race of the bearing whi... | 11/02/1999 |
| 5957677 | Rotary lobe pump with magnetic rotor retention system An improved rotary lobe pump has a pumping chamber (1) having a housing (2) closed by a front wall (3)and a rear wall (6). The front housing wall (3) is secured to the housing (2) by bolts (4) and is sealed with a gasket (5). The housing (2) comprises a r... | 09/28/1999 |
| 5571004 | Sliding vane rotor attachment An adjustable attachment for connection of a rotor to a shaft which provides precise axial positioning of the rotor with respect to a motor housing. The adjustment is effected by a screw mounting of the rotor on the shaft and spring discs placed in a comp... | 11/05/1996 |
| 5505595 | Scroll type fluid displacement apparatus having axial movement regulation of the driving mechanism A scroll-type fluid displacement apparatus includes a compressor housing, which contains a compression mechanism and a driving mechanism operatively connected to one another. The compression mechanism includes a fixed scroll and an orbiting scroll interfi... | 04/09/1996 |
| 5004409 | Displacement machine A prime mover or pump comprising of a first stationary plate and a second plate arranged parallel to the stationary plate and spaced therefrom. The second plate is rotatably mounted about its central axis. A plurality of elongated wall elements are dispos... | 04/02/1991 |
| 4880367 | Rigid support structure for single screw compressors A single screw compressor for varying the pressure of a fluid characterized in that the alignment of the mainrotor and the gaterotor axes is maintained in the presence of distortion due to temperature and pressure gradients. The structural arrangement per... | 11/14/1989 |
| 4604039 | Scroll type fluid compressor with axial clearance adjusting construction The invention relates to scroll type fluid compressor which includes a mechanism for adjusting axial clearance and alignment. Adjustment sleeves, which are disposed threaded apertures of the compressor housing, move for and aft, and adjust the location an... | 08/05/1986 |
| 4575319 | Method and apparatus for adjusting the angular relationship of spiral elements in a scroll type fluid displacement apparatus A method and apparatus for adjusting the angular relationship between the scroll elements of a scroll type fluid displacement apparatus are disclosed. Holes are provided in the front end plate of the apparatus housing and the end plate of the orbiting scr... | 03/11/1986 |
| 4548556 | Interfitting mechanism of spiral elements for scroll-type fluid displacement apparatus A scroll-type fluid displacement apparatus and a method of assembling the apparatus wherein an adjustment member provides proper alignment of parts. The apparatus includes a front end plate and a casing through which a hole extends, a bore formed in the e... | 10/22/1985 |
| 4492544 | Gear machine with displaceable central housing part A gear machine has a housing with a sealing recess and a sealing region, two gear members engaging with one another and arranged so that after mounting of the machine the gear members penetrate into a material removing manner into the sealing region of th... | 01/08/1985 |
| 4462775 | Rotary piston machine with mating frustoconical sealing surface A rotary fluid machine of the kind that is to be actuated by any fluid under pressure in which a rotor (15) carrying a piston member (154) rotates continuously when the machine is in operation about the axis (AA1) of an annular chamber (21), th... | 07/31/1984 |
| 4460321 | Axial clearance adjustment mechanism for scroll type fluid displacement apparatus A scroll type fluid displacement apparatus is disclosed having an adjustment mechanism for adjusting the axial clearance between the spiral elements and end plates of the fixed and orbiting scrolls. The apparatus includes a housing having a front end plat... | 07/17/1984 |
| 4017223 | Axial thrust adjustment for dual screw-type pump A dual screw-type pump is provided with a means for balancing the resultant dynamic axial thrust on the screw assemblies during operation of the pump. The resultant thrust on each assembly is absorbed in part by a circular piston on the assembly near the ... | 04/12/1977 |
| 4003682 | Rotary piston engine having continuous torque characteristics A rotary piston engine is disclosed of a novel, geometric construction whereby substantially pressure dependent operation is ensured along with continuous torque characteristics. In the preferred inventive embodiment, an elongated rotatable shaft having a... | 01/18/1977 |
