Quotables
"Fooling around with alternating current is just a waste of time. Nobody will use it, ever."
Thomas Edison ; 1889
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7946834 | Balance shaft module equipped with oil pump A balance shaft module according to the present invention includes a first balance shaft equipped with a first eccentric balance weight, a second balance shaft equipped with a second eccentric balance weight, and a hydraulic pump that is operated by the first balanc... | 05/24/2011 |
| 7942656 | Compressor and device for reducing vibration therefor A compressor and device for reducing vibration therefor is provided herein. The compressor includes a compression device having a compression chamber, and configured to receive, compress, and output a refrigerant, a drive motor configured to rotate the compression d... | 05/17/2011 |
| 7455508 | Scroll type fluid machine having counter weight provided on driving bush and sub weight radially protruding from rotary shaft A scroll type fluid machine having a driving system including a counter weight and a sub weight, in which an efficiency of an assembling operation is enhanced by simplifying an assembling structure of the driving system. In the fluid machine, a sub weight (17... | 11/25/2008 |
| 7435067 | Scroll machine with brushless permanent magnet motor A scroll machine is powered by a brushless permanent magnet motor. The rotor for the motor includes a rotor body formed by a plurality of laminations and an upper and lower counterweight made of zinc and located at opposite ends of the rotor body. An attachment memb... | 10/14/2008 |
| 7393191 | Internal refrigerant gas circulation apparatus for a closed-type scroll compressor In the case where a radial fan is provided on the upper end side of a rotor to provide an air circulating flow containing refrigerant gas so as not to hinder the flow of lubricating oil in a motor chamber, by which a motor is cooled, in order to reduce the cost of t... | 07/01/2008 |
| 7384250 | Oil discharge preventing apparatus of scroll compressor An oil discharge preventing apparatus of a scroll compressor comprises: a balance weight coupled to a rotor of a driving motor so as to offset an unbalance generated when an orbiting scroll performs an orbiting motion by receiving a rotation force of the driving mot... | 06/10/2008 |
| 7371059 | Scroll compressor with discharge valve A scroll compressor utilizes scroll wrap profiles which are designed with a rapid compression scroll wrap profile. This profile utilizes a shorter wrap and lower vane aspect ratios during the compression process. The non-orbiting scroll member is integrated with the... | 05/13/2008 |
| 7367790 | Double-acting type orbiting vane compressor The double-acting type orbiting vane compressor comprises an orbiting vane having upper and lower circular vanes formed at the upper and lower surfaces of a vane plate of the orbiting vane, respectively, the orbiting vane being attached to a crankshaft rotatable by ... | 05/06/2008 |
| 7358633 | Linear vibration motor using resonance frequency A linear vibration motor comprising a movable unit, a base assembly having a coil assembly, a housing and an elastic member, in which the movable unit has the maximum mass from a fixed housing volume. The elastic member has the outer periphery fixed to the ceiling o... | 04/15/2008 |
| 7306440 | Vane pump including rotor having eccentric gravity center A vane pump includes a casing having a cylindrical inner bore and a rotor disposed in the inner bore with an eccentric relation thereto, forming a circular pump chamber between the rotor and the inner bore. The circular pump chamber is divided by vanes held in the r... | 12/11/2007 |
| 7210226 | Method of manufacturing an impeller A method of manufacturing an impeller includes the steps of: (a) forming an impeller having a plastic disc body and magnetisable material distributed and encapsulated within the body; (b) testing the imbalance of the impeller; (c) removing plastic material from the ... | 05/01/2007 |
| 7162797 | Method of correcting imbalance of a scroll compressor A compressor has a compression unit for compressing gas to a desired pressure, a drive shaft and a balancer. The drive shaft is connected to the compression unit for driving the compression unit. Imbalance on the drive shaft is generated due to movement of the compr... | 01/16/2007 |
| 7134845 | Variable capacity rotary compressor A variable capacity rotary compressor including a housing to define therein two compression chambers having different capacities, a rotating shaft transmit ting a rotating force from a drive unit to the two compression chambers, two eccentric parts are provided on a... | 11/14/2006 |
| 7114930 | Compressor There is provided an efficient compressor which is simple in structure and small in torque fluctuation. The compressor comprises a compression element which comprises a cylinder having a compression space formed therein, a suction port and a discharge port which com... | 10/03/2006 |
| 7104771 | Eccentric bush structure in radial compliance scroll compressor An eccentric bush structure in a radial compliance scroll compressor including an eccentric bush fitted around a crank pin eccentrically provided at an upper end of a crankshaft, crank pin and stopper holes provided at the eccentric bush, and a weight member adapted... | 09/12/2006 |
| 6860729 | Compressor having main and adjustable balancer portions A compressor has a compression unit for compressing gas to a desired pressure, a drive shaft and a balancer. The drive shaft is connected to the compression unit for driving the compression unit. Imbalance on the drive shaft is generated due to movement of the compr... | 03/01/2005 |
| 6758659 | Scroll type fluid displacement apparatus with fully compliant floating scrolls The invention includes a “floating scroll” mechanism for scroll type fluid displacement apparatus. The dual orbiting scroll has spiral vanes on both sides of the end plate. In a floating scroll, the orbiting scroll is dynamically well balanced, axially and radia... | 07/06/2004 |
| 6695601 | Self-balanced compressor crankshaft A hermetic compressor assembly including a compressor housing, a compression mechanism disposed in the housing, a motor disposed in the housing; and a crankshaft operatively coupling the compression mechanism and the motor and having an axis of rotation. ... | 02/24/2004 |
| 6682323 | Simplified stamped counterweight A simple, stamped counterweight is formed from a flat sheet of metal. The counterweight is attached to an uppermost portion of the end ring of the motor rotor. In this way, the counterweight requires little axial space, and is a very simple item to produc... | 01/27/2004 |
| 6503071 | High speed UniVane fluid-handling device A single vane gas displacement apparatus comprises a stator housing with a right cylindrical bore enclosing an eccentrically mounted rotor which also has a radial slot in which is movably radially positioned a single vane. The vane is tethered to antifric... | 01/07/2003 |
| 6494695 | Orbiting scroll center of mass optimization The location of center of mass of an orbiting scroll is optimized by adding or removing mass at certain strategic locations on the orbiting scroll member. The center of mass is optimized to reduce alternating torsional moment acting on Oldham coupling. Re... | 12/17/2002 |
| 6454551 | Seal structure in a scroll type compressor The pressure leakage from the back pressure chamber installed at the back side of the movable scroll to the low pressure area can be prevented. An eccentric shaft (17) formed integrally to a drive shaft (14) is inserted into a bushing (19). A balance weig... | 09/24/2002 |
| 6382941 | Device and method to prevent misbuild and improper function of air conditioning scroll compressor due to misplaced or extra steel spherical balls In prior art scroll-type compressors, a cavity is formed in the interior of the compressor of a sufficient size to allow a misplaced or extra steel spherical ball to become lodged therein and cause seizure of the compressor. The present invention modifies... | 05/07/2002 |
| 6379134 | Scroll compressor having paired fixed and moveable scrolls A scroll compressor comprising paired fixed and movable scrolls, the fixed scroll of each pair having an end plate provided with a scroll body projecting from the end plate and the movable scroll of each pair having an end plate provided with a scroll bod... | 04/30/2002 |
| 6368091 | Screw rotor for vacuum pumps The moment Mo of unbalanced forces Fr of a screw rotor A1 is reduced by adjusting the number of thread leads of a threaded portion 2 of the screw rotor A1 to (an integer +0.5). The amount of unbalance for keeping a state of dynamic balance thereby decreas... | 04/09/2002 |
| 6368090 | Automotive vane pump for generating anti-centrifugal force An automotive vane pump for generating anti-centrifugal force, and more particularly to an automotive vane pump for generating anti-centrifugal force adapted to maintain constant discharge pressure and discharge amount regardless of rotating speed to prev... | 04/09/2002 |
| 6352418 | Displacement type fluid machine A displacement type fluid machine which is easier to machine and assemble than a scroll type fluid machine and has high performance and low cost. A displacer is revolved in a cylinder having an inside wall formed by a curve such that a planar shape is con... | 03/05/2002 |
| 6338617 | Helical-blade fluid machine A helical-blade fluid machine maintains a low-pressure atmosphere in a closed casing (1) and secures a proper lubrication state for a compression mechanism (9). The fluid machine has a drive mechanism (7) that is installed at an upper or lower part of the... | 01/15/2002 |
| 6305914 | Counterweight of reduced size Counterweight size is reduced by removing material from an electric motor rotor for a machine, such as a compressor. The material is removed asymmetrically with respect to shaft centerline to provide maximum benefit. Counterweight size reduction results i... | 10/23/2001 |
| 6280168 | Multi-cylinder rotary compressor An object of the present invention is to provide a multi-cylinder rotary compressor which can eliminate a number of balancers for preventing vibrations. Assuming that the mass eccentricity in a cylinder is m1×r1; the mass eccentricity in another cylinder... | 08/28/2001 |
| 6190147 | Rotation balancing mechanism for orbiting scrolls of scroll-type compressors A rotation balancing mechanism of an orbiting scroll of a scroll-type compressor that reduces the outer diameter of the compressor housing. A compression mechanism includes a fixed scroll and an orbiting scroll. The compression mechanism is coupled to a s... | 02/20/2001 |
| 6174149 | Scroll compressor with captured counterweight A counterweight is attached to a rotating shaft by a slip fit, combined with two axially abutting surfaces to hold the counterweight. The counterweight is preferably held at one face by a ledge formed on the shaft, and at the opposed face by a portion of ... | 01/16/2001 |
| 6162035 | Helical-blade fluid machine A helical-blade fluid machine maintains a low-pressure atmosphere in a closed casing (1) and secures a proper lubrication state for a compression mechanism (9). The fluid machine has a drive mechanism (7) that is installed at an upper or lower part of the... | 12/19/2000 |
| 6158996 | Screw rotor set Known designs of single-thread screw rotors in single-piece cast iron constructions having wrap angles of >720 degrees with balancing cavities on the face of the screw operate with no unbalance at average rotary frequencies of (~3000 min-1). Th... | 12/12/2000 |
| 6146120 | Rotary engine having an improved rotor structure A rotary engine includes a rotary shaft, a rotary piston carried by the shaft, a bearing structure supporting the shaft on one side of the rotary piston and a counterweight carried by the shaft on another side of the rotary piston. An air/fuel/oil charge ... | 11/14/2000 |
| 6139297 | Double worm system In prior art designs, single-flight cast double worms with angles of contact >720° with large balance hollows at both ends and worm lengths of whole multiples of the pitch operate in the medium rotation speed ranges (~3000 min~1) without imbal... | 10/31/2000 |
| 6135727 | Detachably affixed counterweight and method of assembly A compressor or pump assembly including a housing, a compression mechanism disposed within the housing, a shaft operatively connecting the compression mechanism and a drive source, the shaft having an axis of rotation and first and second surfaces, the sh... | 10/24/2000 |
| 6123527 | Scroll hydraulic machine A scroll hydraulic machine has a fixed scroll and a swirling scroll performing a revolutionary swirling motion while engaging with the fixed scroll; there is also a balance weight in which a distance between a center of revolution of the swirling scroll a... | 09/26/2000 |
| 6102160 | Compressor lubrication A lubrication system for a compressor has a first axially extending lubricant passage in the driveshaft located on the axis of rotation of the driveshaft. A second axially extending passage in the driveshaft is located radially outward from the first axia... | 08/15/2000 |
| 6089840 | Scroll compressor in which an eccentric bush is radially movable with being guided by a guide pin In a scroll compressor in which a movable scroll member (4) is eccentrically spaced from a fixed scroll member (5) and rotatably holds an eccentric bush (3) having a bush hole (30) inserted with a crank pin (110) of a crank shaft (10), the eccentric bush ... | 07/18/2000 |
