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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8360106 | Curved pliant film valves Disclosed is a one-way valve and sealing assemblage wherein an affixed curved pliant film device, a compressible spring, and a reciprocal curved channel surface automatically work cooperatively to permit forward material flow above a predetermined fluid pressure thr... | 01/29/2013 |
| 7284971 | Hermetic compressor A hermetic compressor comprising a discharge valve, and a stopper for restricting an opening degree of the discharge valve. The discharge valve includes a body portion configured to cover a discharge port formed at a valve plate, and a first protrusion extending fro... | 10/23/2007 |
| 7275561 | Discharging valve assembly of reciprocating compressor A discharging valve assembly for a reciprocating compressor includes a discharging cover coupled with a front frame so as to cover a cylinder in which a piston is inserted; a discharging valve inserted in the discharging cover, and opening/closing an inner space of ... | 10/02/2007 |
| 7074022 | Discharge valve assembly for reciprocating compressors A reciprocating compressor including cylinder block with a plurality of cylinder bores. A piston is positioned in each bore and mounted to move in response to the a crankshaft, causing each piston to reciprocate within the cylinder bore. The compressor further inclu... | 07/11/2006 |
| 7066296 | Valve device for silencer A valve device for a silence opens a bypass passage provided in the silencer to flow exhaust gas through the bypass passage when exhaust gas pressure rises to a certain pressure. The valve device includes a base having a valve opening through which exhaust gas flows... | 06/27/2006 |
| 7063520 | Suction valve assembly of reciprocating compressor In a reciprocating compressor including a piston slide-inserted into the compression space of the cylinder, having a gas path therein, inducing a fluid into the compression space through the gas path and varying a volume of the compression space while performing a l... | 06/20/2006 |
| 7059344 | Discharge valve mechanism for variable displacement compressor A discharge valve mechanism has a plurality of discharge openings. The discharge openings are placed in an open or closed state by a plate-like valve element. Each of the discharge openings is formed at a respective location between a base end side and a leading end... | 06/13/2006 |
| 7018183 | Compressor having discharge valve A compressor having a discharge valve. The discharge valve is mounted to the fixed scroll of a scroll compressor using a C-shaped clamp. The clamp is secured using a threaded fastener which extends through the clamp at a position between the two legs of the clamp. T... | 03/28/2006 |
| 6953051 | Valve plate structure Disclosed is a valve plate structure comprising: a suction valve for inhaling a low pressure of coolant through a linear reciprocating movement of a piston and an opening and closing operation in response to the back-and-forth movement; a valve plate coupled with th... | 10/11/2005 |
| 6932115 | Valve apparatus for hermetic compressor The present invention relates to a valve apparatus for a hermetic compressor. In the present invention, an elastic lead (40) is integrally formed with a discharge valve (30) in order to reduce striking force generated when the discharge valve (30 | 08/23/2005 |
| 6893233 | Noise reducing cylinder assembly for compressor A cylinder assembly for a hermetic compressor is capable of reducing impulse and noise that is generated by a contact of a valve plate and a suction valve when the suction valve is closed. The cylinder assembly has a cylinder block having a cylinder formed therein; ... | 05/17/2005 |
| 6823896 | Valve assembly of a reciprocal compressor A valve assembly of a close-type reciprocal compressor. The valve assembly includes a valve plate disposed between a cylinder body and a cylinder head, a reed valve for opening and sealing a refrigerant discharge hole formed at the valve plate, a first stopper for r... | 11/30/2004 |
| 6820644 | Delivery valve device for refrigerant fluid compressor A delivery valve device for a refrigerant compressor. The delivery valve device include a valve plate with the delivery passage closed by a delivery valve fixed at one end to the valve plate and pressed against this valve plate at its free end by a spring. A valve s... | 11/23/2004 |
| 6796331 | Delivery valve device for a fluid compressor A delivery valve device for a fluid compressor. The device includes a valve plate with a delivery passage closed by a delivery valve pressed against the valve plate by a spring. The valve plate includes an inset housing to accommodate the delivery valve and the spri... | 09/28/2004 |
| 6592346 | Compressor discharge valve A compressor includes a particularly shaped discharge valve which extends into the discharge port. The shaped valve includes a convex portion on the seat side of the valve which extends downwardly into the discharge port. The shaped valve furthermore incl... | 07/15/2003 |
| 6579075 | Compressor A compressor for refrigeration cycles, which is provided with a noise attenuation structure on the interior wall of the discharge plenum, is disclosed. In the compressor of this invention, a valve seat is covered with a head cover at its top to form a dis... | 06/17/2003 |
| 6454545 | Compressor In the present compressor, a retainer is prevented from being deformed without impairing the sealing performance of a metal gasket provided between a covering member for closing a compression chamber of a cylinder block assembly and a discharge valve form... | 09/24/2002 |
| 6012489 | Compression value assembly applied to a hermetic cooling compressor An improved valve mounting assembly for a hermetically sealed compressor. The valve mounting assembly includes a valve, a damper, and a retention yoke. The valve, valve damper, and retention yoke cooperate to provide a valve mounting arrangement having hi... | 01/11/2000 |
| 6006786 | Valved discharge mechanism for fluid displacement apparatus A discharge valve assembly for use in a fluid displacement apparatus having a suction chamber and a compression chamber on one side of a valve plate, a discharge chamber on the other side of said valve plate, and a passage which is formed in the valve pla... | 12/28/1999 |
| 6006785 | Suction valve for an axial piston compressor A suction valve for an axial piston compressor has a leaf spring fixed at one end, which spring at one end is fixed with a fixed portion between valve plate and cylinder block, at its other end covers over the suction valve opening with a closure portion ... | 12/28/1999 |
| 5934305 | Method of manufacturing a reciprocating compressor A reciprocating compressor includes a compression chamber in which a piston compresses gas, the gas being discharged through a discharge hole that is normally closed by a valve assembly. The valve assembly includes a valve plate on which one end of a disc... | 08/10/1999 |
| 5909749 | Valve apparatus of hermetic type compressor A valve apparatus of a hermetic type compressor enables an easy mounting of an exhaust valve and a valve spring to an accurate position within a reentrant groove formed in a cylinder head, decreases the number of elements of the valve apparatus to facilit... | 06/08/1999 |
| 5887622 | Valve assembly of a compressor A valve assembly is comprised of a valve plate 35, a discharge valve 34, a backing valve 33, and a stopper 31. A first fixed member 34H of the discharge valve 34 and second fixed member 33H of the backing spring 33 have a first slot 43 and a second slot 4... | 03/30/1999 |
| 5875819 | Discharge valve apparatus for hermetic compression An improved discharge valve apparatus for a hermetic compressor which is capable of fixing the retainer based on the elastic force of the elastic protrusions formed in the retainer itself and the shape of the head cover engaged with the retainer, for thus... | 03/02/1999 |
| 5823870 | Method and apparatus for reducing exhaust flap movement An apparatus used with a vehicle one way ventilation exhaust valve with a plurality of flexible flaps is provided comprising a retainer with a frame and a plurality of flap retention members connected across U-shaped members attached to the frame such tha... | 10/20/1998 |
| 5775887 | Spacer configuration for a discharge reed valve of a hermetic type compressor A hermetic type compressor which makes opening and closing of a exhaust valve installed inside a reentrant groove formed in a cylinder head smooth, and prevents leakage of refrigerant from the exhaust valve by fabricating a valve seat surface to be in the... | 07/07/1998 |
| 5769126 | Discharge valve assembly in a reciprocating compressor A reciprocating compressor includes a compression chamber in which a piston compresses gas, the gas being discharged through a discharge hole that is normally closed by a valve assembly. The valve assembly includes a valve plate on which one end of a disc... | 06/23/1998 |
| 5676533 | Discharge valve arrangement for a hermetic type compressor A hermetic type compressor which makes opening and closing of a exhaust valve installed inside a reentrant groove formed in a cylinder head smooth, and prevents leakage of refrigerant from the exhaust valve by fabricating a valve seat surface to be in the... | 10/14/1997 |
| 5647395 | Valved discharge mechanism of a fluid displacement apparatus A discharge valve assembly for use in a fluid displacement apparatus has a suction chamber and a discharge chamber on one side of a valve plate, a compression chamber on the other side of the valve plate and a passage formed in the valve plate extending b... | 07/15/1997 |
| 5601118 | Discharge valve apparatus of compressor A compressor for compressing a refrigerant includes a discharge outlet, and a valve mechanism for controlling the opening and closing of the outlet. The valve mechanism comprises a reed normally biased to an outlet-closing position by a leaf spring which ... | 02/11/1997 |
| 5577901 | Compressor with valve unit for controlling suction and discharge of fluid A compressor whose structure is simple, assembling is easy and refrigeration efficiency is improved. A valve unit of the compressor includes a valve plate 230 in which a suction hole 231 and a discharge hole 234 are formed, a suction valve plate 220 dispo... | 11/26/1996 |
| 5558508 | Reed-type discharge valve arrangement for a hermetic compressor An elongated recess is provided on one side of a valve plate, and a piston is provided on the other side of the valve plate. Discharge holes are provided through the valve plate at the recess, and a pair of discharge reeds are disposed within the recess t... | 09/24/1996 |
| 5554016 | Spring configuration for a hermetic compressor discharge valve A hermetic compressor for use in refrigeration systems is provided. The hermetic compressor includes a compressor unit disposed within an enclosed compressor casing. The compressor unit has a compression chamber and a valve assembly having an inlet port a... | 09/10/1996 |
| 5209260 | Valve unit for hermetic reciprocating type compressor A valve unit for a hermetic reciprocating compressor comprises a valve plate adapted to be attached to the end of a piston cylinder. A discharge passage is formed through the valve plate, and a valve assembly is mounted within a stepped recess formed in a... | 05/11/1993 |
| 5178183 | Compressor discharge valve A discharge valve for a compressor includes a valve plate having a recessed portion formed around a discharge port with a valve seat. A channel having a raised bottom surface is formed at the recessed portion. A valve reed is positioned at the recessed po... | 01/12/1993 |
| 5110272 | Valve unit for a reciprocating compressor for refrigerators and the like The valve unit includes a valve plate fitted to a head end of the cylinder of the compressor and having a valve-controlled intake part and an exhaust port surrounded by an annular seat formed in an opposite face of the plate from that which faces the cyli... | 05/05/1992 |
| 5099886 | Seals for gas isolators having multiple bias springs A cantilever leaf spring (1) attached to a fixed frame or movable member of a gas isolator is acted on by a bias spring (2) and an additional similar, but not identical, bias spring (12).... | 03/31/1992 |
| 5016669 | Valve assembly The valve assembly comprises a body formed of substantially identical, or identical plates, in which one is the mirror-image or reverse of the other. The plates are held apart, in parallel planes, by an enveloping seal. Each plate is ported for the conduc... | 05/21/1991 |
| 4895494 | Interchangeable manifolds for diaphragm pumps A double acting diaphragm pump includes a flat valve construction which is reversible to provide valving for both the inlet and outlet to the pumping chamber. A modular manifold construction cooperates with the flap valve construction to facilitate ease o... | 01/23/1990 |
| 4723896 | Compressor discharge valve assembly A hermetic refrigeration compressor has a flat valve plate closing off a cylinder bore. The valve plate has an elongated recess on the outer side around the discharge port and a discharge valve assembly, comprising a flat reed valve and backing spring, fi... | 02/09/1988 |
