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| Number | Title | Issue Date |
| 8186983 | Gas compressor having a check valve A compressor includes a compression mechanism for suctioning gas through a suction path to compress the gas and discharging the compressed gas and a check valve for preventing backward-flow of the gas in the suction path. The check valve includes an accommodation ho... | 05/29/2012 |
| 7918659 | Vacuum pump for a vehicle with multiple one-way valves The invention relates to a vacuum pump (1) for vehicle motors, comprising a stator (2), a chamber defined within said stator (2) and at least one vane rotatably mounted inside said chamber so as to generate a depression. The stator (2) co... | 04/05/2011 |
| 7621730 | Surgical pneumatic motor A modular constructed surgical motor with an outer cylindrical case used as the handle, and a spaced inner motor case resiliently mounted thereto forms an air gap for reducing vibrations and heat, a separate module houses the chuck, a ball coupling made from an elas... | 11/24/2009 |
| 7585164 | Backflow preventing apparatus for compressor A backflow preventing apparatus for a scroll compressor is disclosed, in which a check valve is hinge-coupled to a valve seat, or is coupled to a valve seat so as to be elastically opened and closed. The check valve is opened and closed by a pressure difference and ... | 09/08/2009 |
| 7572119 | Air cylinder for pneumatic tool An air cylinder for pneumatic tool includes a cylinder body, and front and rear cylinder caps covered onto two ends of the cylinder body. The cylinder body defines a cylinder chamber for mounting a rotor therein, and has an air passage with two open ends of the pass... | 08/11/2009 |
| 7527486 | Surgical pneumatic motor for use with MRI A surgical pneumatic motor is designed to be used with or without an MRI machine without affecting or influencing the magnetic characteristic of the MRI machine. The motor includes an improved vane motor with undercuts in the spindle to increase the power faces of t... | 05/05/2009 |
| 7429167 | Scroll machine having a discharge valve assembly A discharge valve assembly is provided for preventing reverse rotation of a scroll compressor. The discharge valve assembly includes a cup-shaped valve member slidably engaged with a central post of a retainer member. The cup-shaped valve member includes notches in ... | 09/30/2008 |
| 7393190 | Discharge valve system of scroll compressor A discharge valve system of a scroll compressor comprises: a fixed scroll having a discharge hole and discharge bypass holes; a discharge valve assembly mounted at the fixed scroll, for opening and closing the discharge hole by a pressure difference; and an integral... | 07/01/2008 |
| 7390182 | Rotor structure of pneumatic tool A rotor structure of pneumatic grinder, including a rotor main body and at least one reinforcing plate. The rotor main body is formed with a central shaft hole for a rotary shaft to pass through. Several radial projecting sections are formed on outer circumference o... | 06/24/2008 |
| 7381037 | Apparatus for varying capacity of scroll compressor An apparatus for varying the capacity of a scroll compressor is disclosed. The apparatus for varying the capacity of a scroll compressor includes a bypass passage for connecting a compression pocket under intermediate pressure among compression pockets formed by a w... | 06/03/2008 |
| 7357619 | Cross over flow diverter for noise reduction A cris-cross pattern of flow channels serves to divide the flow of fluid and then cross the flow to cause an impact between the flow in each channel to impact against each other to reduce the decibels and noise level created by the flowing of the fluid. In a pneumat... | 04/15/2008 |
| 7354260 | Pneumatic motor including a rotor in a cylinder between two covers in a shell from which air travels into the cylinder through the covers A pneumatic motor includes a shell, two covers, a cylinder and a rotor. The shell defines a space, at least one inlet in communication with the space and at least one outlet in communication with the space. Each of the covers defines at least one radial channel and ... | 04/08/2008 |
| 7344367 | Rotary compressor having a discharge valve A rotary compressor having a housing, a rotor positioned within the housing defining a compression chamber, the rotor rotatable about an axis of rotation, a discharge port in the rotor in fluid communication with the compression chamber, and a valve assembly mounted... | 03/18/2008 |
| 7338265 | Scroll machine with single plate floating seal A scroll machine utilizes a floating seal to isolate pressurized fluid to provide axial biasing. The floating seal is designed as a single piece plate with inner and outer annular seals. The inner and outer annular seals can be U-shaped, V-shaped or L-shaped and eac... | 03/04/2008 |
| 7338268 | Discharge valve device of a compressor A compressor includes a casing, a driving part adapted to be accommodated in the casing for generating a driving force, a compression part for compressing gas with the driving force from the driving part and provided with an inlet for inhaling the gas and an outlet ... | 03/04/2008 |
| 7326039 | Apparatus for varying capacity of scroll compressor The present invention discloses an apparatus for varying a capacity of a scroll compressor. The apparatus comprises: a pressure control mechanism for controlling a pressure applied to the back of a orbiting scroll orbiting engaged with a fixed scroll; and a sealing ... | 02/05/2008 |
| 7322808 | Balancing plate—shuttle ball A pressure compensation mechanism for a gerotor motor is disclosed, which mechanism includes a shuttle valve that selectively interconnects either port to a single pressure chamber and thus to compensate for any pressure-induced imbalances in the device. ... | 01/29/2008 |
| 7318768 | Low profile electric sander A power tool is a “low profile” power tool, that is the overall height of the power tool is sufficiently small that a user can grasp the top of the power tool with the user's hand and the hand will be positioned relative close to the bottom of the power tool com... | 01/15/2008 |
| 7318451 | Flapper valves with spring tabs A flapper valve assembly has a valve plate for attachment to a fluid device, such as a heat exchanger. The valve plate has a fluid port for permitting intermittent flow to or from a flow chamber in the fluid device. A resilient flapper covers the fluid port and has ... | 01/15/2008 |
| 7314355 | Compressor including deviated separation chamber A compressor is provided with an oil separator disposed in between a discharge chamber of a refrigerant and a discharge port connected to a circulating path for the refrigerant. The oil separator has a separating chamber into which the refrigerant flows from the dis... | 01/01/2008 |
| 7290994 | Rotary hermetic compressor and refrigeration cycle system A vane of a first cylinder is compressed and urged by a spring member. A vane of a second cylinder is compressed and urged corresponding to a differential pressure between an intra-casing pressure guided into a vane chamber and a suction pressure or discharge pressu... | 11/06/2007 |
| 7281912 | Compressor having a safety device being built in at least one of the screw plugs of the oil-separator A compressor is provided with an oil separator for separating part of the lubricating oil contained in the compressed refrigerant, path arrangement for connecting a separation chamber of the separator and a delivery port of the compressed refrigerant, the path arran... | 10/16/2007 |
| 7281913 | Compressor including integrally formed separation tube and seal bolt A compressor includes an insertion hole which is formed separately from a discharge port in order to insert a separation tube for separating lubricating oil from compressed working fluid into a separation chamber, and a seal bolt which is screwed into the insertion ... | 10/16/2007 |
| 7261526 | Cylinder for a vane motor A cylinder to a vane motor is designed to include cylindrically shaped inlet and outlet holes, an axial passage that includes a blocked upstream portion that bypasses the upstream inlet holes, spaced circumferentially slots for leading a portion of the pressurized a... | 08/28/2007 |
| 7261527 | Compressor check valve retainer A scroll compressor has a sealed housing. Within the sealed housing is a first scroll member having a first base and a first generally spiral wrap extending form the first base. A second scroll member has a second base and a second generally spiral wrap extending fr... | 08/28/2007 |
| 7255546 | Spindle for a vane motor The spindle of a vane motor is designed to enhance the power, speed and torque by undercutting the spindle adjacent to the vanes on the power stroke side to increase the working area of the vanes and by adding slots intermediate the vane formed in said spindle and e... | 08/14/2007 |
| 7237622 | Pneumatic tool having pressure release device A pneumatic tool includes a rotor rotatably received in a housing, a driving shank coupled to the rotor, for being rotated by the rotor and by a pressurized air and having one end for driving a fastener. A pressure releasing device may release the pressurized air af... | 07/03/2007 |
| 7222680 | Pneumatic motor improvements and pneumatic tools incorporating same A pneumatic motor having a motor chamber having an inner surface with an eccentric longitudinal axis, a motive gas fluid inlet, and at least one end wall located transversely to the longitudinal axis with an exhaust aperture located therethrough. A rotor is rotatabl... | 05/29/2007 |
| 7220110 | Compressor having a throttled-return passage connecting an oil accumulator to a seal container A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element.... | 05/22/2007 |
| 7192264 | Hyrdraulic motor The invention relates to a hydraulic motor having an outer casing and eccentric means for rotating a power shaft by means of fluid through a pressure chamber arrangement. The eccentric means comprise an eccentric part formed in the power shaft, a first eccentric rin... | 03/20/2007 |
| 7186095 | Compressor mounting bracket and method of making A mounting bracket for a compressor. The mounting bracket includes a mounting member and an elongate bracing member. The mounting member is secured to the housing of the compressor has a central support section in substantial registry with the housing. The mounting ... | 03/06/2007 |
| 7163383 | Compressor having alignment bushings and assembly method A compressor assembly including a compression mechanism having a main bearing and a plurality of first pilot holes, and an electric motor comprising a rotor disposed within a stator. The stator has a plurality of second and third pilot holes. Each of the first pilot... | 01/16/2007 |
| 7134854 | Oil recycling apparatus for compressor An oil recycling apparatus for compressor includes an oil baffle plate around a scroll unit of the compressor. A working gas flowed back to the scroll unit will impinge the oil baffle plate and is condensed. The condensed oil gas is attached to the oil baffle plate ... | 11/14/2006 |
| 7134853 | Scroll compressor having a flow rate controlling member inserted into a high pressure fluid introducing passageway A flow rate controlling member, provided with a spiral passageway formed on its outer periphery, is inserted into a high pressure fluid introducing passageway formed in an end plate of a movable scroll for the introducing of fluid from a fluid feeding path into a th... | 11/14/2006 |
| 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 |
| 7112046 | Scroll compressor for refrigerant The invention relates to a compressor for refrigerant, comprising: an outer housing; a scroll compressor which is disposed in the outer housing; an outlet, which is located in the base of the stationary compressor body and which leads to a high pressure chamber in t... | 09/26/2006 |
| 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 |
| 7059842 | Variable capacity rotary compressor A variable capacity rotary compressor including a hermetic casing, and a housing installed in the hermetic casing to define therein first and second compression chambers having different capacities. A compressor is placed in the first and second compression chambers... | 06/13/2006 |
| 7040414 | Pneumatic tool A pneumatic tool includes a housing, a driving mechanism, a rear cap, a direction controller, a speed controller, and an operating member. The housing is formed with a component chamber and an intake passageway. The driving mechanism includes an output shaft rotatab... | 05/09/2006 |
| 7040880 | Horizontal rotary compressor A horizontal rotary compressor is configured such that an electrically powered compressor body is accommodated in a horizontally long hermetic receptacle in which a lubricating oil is accumulatively preserved, an interior of the hermetic receptacle is partitioned by... | 05/09/2006 |
