Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8157550 | Scroll compressor having spiral bodies with seal projections In a scroll compressor, a fixed scroll (3) and a movable scroll (5) each having a spiral body are engaged with each other, grooves (13, 14) extending along the spiral shape of the spiral body are formed on the forward end surface of the spiral b... | 04/17/2012 |
| 8152501 | Scroll compressor for preventing performance deterioration and variation due to gas leakage In a scroll compressor configured to be capable of three-dimensional compression in a circumferential direction and a height direction of spiral wraps, in which top surfaces and bottom surfaces of spiral wraps (25B and 27B) are provided with step porti... | 04/10/2012 |
| 8057202 | Tip seal for a scroll compressor A scroll compressor including a non-orbiting and an orbiting scroll member having mating involute wraps extending therefrom. In one exemplary embodiment, at least one of the non-orbiting and orbiting scroll members includes an inner wall forming a groove in an end o... | 11/15/2011 |
| 8043078 | Compressor sealing arrangement A compressor may include a shell, first and second scroll members, a partition and a first annular seal. The partition may be fixed to the shell and may overly the first scroll member. The partition may include first and second sides having a second discharge openin... | 10/25/2011 |
| 8033803 | Compressor having improved sealing assembly A compressor may include a shell, a bearing housing assembly located within and secured to the shell, a compression mechanism supported on the bearing housing assembly, a partition extending over the compression mechanism, and an annular seal assembly. The partition... | 10/11/2011 |
| 8025492 | Scroll machine A compressor may include a shell, a compression mechanism, and a seal assembly. The shell may define a first discharge passage. The compression mechanism may be supported within the shell and may include first and second scroll members. The first scroll member may i... | 09/27/2011 |
| 7967584 | Scroll machine using floating seal with backer A floating seal has a lower plate, an upper plate and a pair of seals disposed between the two plates. The lower plate, the upper plate or both plates include a backer which projects outward from the plate to engage one or both of the seals to support the seal durin... | 06/28/2011 |
| 7963753 | Scroll compressor bodies with scroll tip seals and extended thrust region A scroll compressor includes scroll compressor bodies with axial tip seals projecting from the respective scroll ribs of fixed and movable scroll compressor bodies. An extended thrust region is provided in surrounding relation to an inner axial tip sealing region to... | 06/21/2011 |
| 7775783 | Refrigeration system including a scroll expander A scroll expander that is efficient in a wide range of operating conditions by suppressing leakage loss and decreasing in recovered power using a simple construction includes: an expansion mechanism, including an orbiting scroll and a first fixed scroll, recovers po... | 08/17/2010 |
| 7645130 | Scroll compressor with an orbiting scroll and two fixed scrolls and ring and tip seals A scroll compressor that has reduced leakage loss and high efficiency includes an orbiting scroll that has spiral teeth on two surfaces, and a fixed scrolls that face the surfaces of the orbiting scroll and that have spiral teeth that intermesh with the spiral of th... | 01/12/2010 |
| 7442016 | Scroll pump and method of assembling same A method of assembling a scroll pump comprises the following steps carried out sequentially; the step of mounting a first bearing means (20) and drive shaft (14) for rotation relative to a housing (12): the step of fastening a first flange porti... | 10/28/2008 |
| 7419370 | Scroll compressor having a position adjustment device urging the movable scroll towards the stationary scroll by moving a seal formed between a support and the movable scroll A scroll compressor has a moving scroll and a stationary scroll in contact with each other. A seal ring for defining a back pressure space at a rear side of the moving scroll is provided and its position is adjusted between a sealing position and a leakage position ... | 09/02/2008 |
| 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 |
| 7371058 | Oil feeding propeller of scroll compressor An oil feeding propeller of a scroll compressor for preventing deterioration of oil feeding generated when a rotation shaft is rotated in reverse is disclosed. The propeller is tightly fitted into the lower side of the oil passage of the rotation shaft, sucks oil in... | 05/13/2008 |
| 7364418 | Scroll fluid machine having an adjustment member with a deformable element A scroll fluid machine includes a stationary scroll having a spiral wrap formed on an end plate and a moving scroll having a spiral wrap formed on an end plate. A polymer actuator for adjusting the amount of space between the wrap and the end plate is disposed in a ... | 04/29/2008 |
| 7364416 | Scroll type compressor with an enhanced sealing arrangement A scroll type compressor with an enhanced sealing arrangement includes two sealing rings, mounted one between a first part of a gliding block and a first chamber of a fixed scroll and another one between a second part of the gliding block and a second chamber of the... | 04/29/2008 |
| 7351043 | Horizontal compressor end cap A substantially horizontal compressor including a housing having a main body portion with an open end. An end cap is secured to the main body portion with the end cap being provided with a plurality of apertures. The hermetic terminal body of the compressor is seala... | 04/01/2008 |
| 7341440 | Scroll compressor A scroll compressor includes an orbiting scroll having a compressor chamber in an upper portion thereof and a bypass passage formed through upper and lower ends of a body thereof, a fixed scroll that allows the orbiting scroll to orbit therein to compress a coolant,... | 03/11/2008 |
| 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 |
| 7331774 | Back pressure control mechanism of orbiting scroll in scroll compressor There is provided, at a low cost, a small-size and lightweight scroll compressor capable of preventing a decrease in compression efficiency by utilizing a medium pressure between a suction pressure and a discharge pressure as a back pressure. An independent minute g... | 02/19/2008 |
| 7329109 | Oil retention in scroll compressor pump members Oil retention recesses are formed on either or both orbiting and non-orbiting scroll elements. In one embodiment, the recesses are formed in a tip of a wrap of at least one of the scroll members. In another embodiment the recesses are formed on the base of at least ... | 02/12/2008 |
| 7322809 | Rotary compressor with sealing portions and oil-supply groove In a rotary compressor to perform oil supplying to bearings through a main oil-supply passage formed in a drive shaft by making use of pressure differential between high-level pressure and low-level pressure in the casing, sealing portions having air-tight structure... | 01/29/2008 |
| 7322807 | Scroll machine with axially compliant mounting A scroll compressor includes a compression mechanism contained within a shell. A non-orbiting scroll is supported for axial displacement relative the shell, and includes an end plate having a wrap extending therefrom and a flange having a bore extending therethrough... | 01/29/2008 |
| 7318711 | Oil supply structure of scroll compressor Disclosed herein is an oil supply structure of a scroll compressor capable of preventing a sludge clog phenomenon in a fine hole of an oil supply screw. The oil supply structure comprises a backpressure space defined between an orbiting scroll and a main frame of th... | 01/15/2008 |
| 7314357 | Seal member for scroll compressors A scroll compressor having a housing with a motor-compressor unit disposed therein. The motor-compressor unit includes a crankcase, stator, rotor, and drive shaft assembly. The motor-compressor unit further includes a fixed scroll member and an orbiting scroll membe... | 01/01/2008 |
| 7314356 | Fluid machine An outer end of a seal element for a fixed scroll is extended to a position close to an end of an inside spiral wall of the fixed scroll, and an outwardly extended portion is formed at an outer periphery of a disc-shaped base plate of a movable scroll, so that a bot... | 01/01/2008 |
| 7309220 | Back pressure apparatus for orbiting vane compressors Disclosed herein is a back pressure apparatus for orbiting vane compressors that is capable of reducing excessive axial force applied to an orbiting vane due to high-pressure refrigerant gas introduced to the lower surface of a vane plate of the orbiting vane. The b... | 12/18/2007 |
| 7300265 | Flanged sleeve guide A scroll machine includes a shell and a pair of scroll members. At least one of the scroll members disposed in the shell is mounted for axial movement with respect to the other scroll member disposed in the scroll. The amount of axial movement of at least one scroll... | 11/27/2007 |
| 7300257 | Prevention of unpowered reverse rotation in compressors The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the compressor driv... | 11/27/2007 |
| 7300266 | Orbiting vane compressor incorporating orbiting vane with oil supply function Disclosed herein is an orbiting vane compressor incorporating an orbiting vane with oil supply function that is capable of performing more smooth orbiting movement. The orbiting vane has a compression unit comprising an orbiting vane having a boss formed in the cent... | 11/27/2007 |
| 7293969 | Tip seal in a scroll fluid machine A scroll fluid machine comprises a stationary scroll having a stationary wrap and an orbiting scroll having an orbiting wrap. A tip seal is provided in a tip-seal groove at the ends of the stationary and orbiting wraps to allow the stationary wrap to engage with the... | 11/13/2007 |
| 7264453 | Horizontal scroll compressor having a connecting passage on the opposite side of a suction port for connecting a motor accommodating chamber with a suction chamber A motor accommodating chamber accommodates an electric motor such that a rotation axis of the motor is substantially horizontal. The pressure in the motor accommodating chamber is equal to the pressure in a suction chamber. A connecting passage connects a bottom por... | 09/04/2007 |
| 7238011 | Scroll compressor A scroll compressor has a fixed scroll including a fixed spiral wall and a movable scroll including a movable spiral wall. Inner end portions of the fixed and movable spiral walls each have an arc-like shape. The inner end portion of the fixed spiral wall has smalle... | 07/03/2007 |
| 7234923 | Scroll fluid machine having a dust seal fitted within annular groove and having ends overlapped in the wider portion of the annular groove In a scroll fluid machine, an orbiting scroll engages with a stationary scroll to form a sealed chamber in which fluid can be compressed toward a center with revolution of the orbiting scroll with respect to the stationary scroll. An annular groove is formed near th... | 06/26/2007 |
| 7228710 | Indentation to optimize vapor injection through ports extending through scroll wrap A scroll compressor is provided with economizer injection ports, which extend through the wrap of one of the scroll members. Preferably the injection ports are formed through a so-called “hybrid” wrap, which has a varying thickness. The other scroll member is pr... | 06/12/2007 |
| 7214043 | Scroll type hydraulic machine A scroll type hydraulic machine is provided with a scroll unit received in a housing, and a thrust bearing arranged between a movable scroll of the scroll unit and a support surface of the housing and receiving a thrust load of the movable scroll, and the thrust bea... | 05/08/2007 |
| 7201568 | Scroll fluid machine A scroll fluid machine has a low-pressure stage compression part for compressing a fluid sucked in from the outside between mutually overlapping wrap portions of two scroll members performing a relative orbiting motion and a high-pressure stage compression part for ... | 04/10/2007 |
| 7195469 | Dust seal in a scroll fluid machine In a scroll fluid machine, a stationary scroll and an orbiting scroll are provided. On the stationary scroll opposing the orbiting scroll, an annular groove is formed. An O-ring, a flexible support ring and a sliding member are put in the annular groove. The support... | 03/27/2007 |
| 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 |
| 7186099 | Inclined scroll machine having a special oil sump A scroll-type compressor is provided in an inclined or inverted position with an oil sump disposed adjacent to a gas inlet of the scroll wraps to allow droplets of oil to be entrained in the gas being compressed so that the oil droplets in the gas can cool the scrol... | 03/06/2007 |
