Patent US4978285A successfully refreshed from Google Patents.
US4978285A
Expired / Lapsed
US
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Reed valve for hermetic compressor
Assignee: Empresa Brasileira de Compressores SA
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Filing: 1990-02-27
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Granted: 1990-12-18
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Expires: 2010-02-27
Abstract
Abstract A reed valve for a hermetic compressor having a case housing a cylinder and a piston movable therein with compression and suction chambers being defined in conjunction with the piston and an end plate provided with a refrigerating fluid passage hole defining with its outlet end a seat on which the flexible blade of a valve is seatable. The passage hole outlet end is in a spaced plane in relation to a parallel plane on the end plate to which the blade basic portion is attached with the blade, when not elastically deformed, lying in a sloped plane in relation to the plane containing the passage hole outlet.
Inventors
- 👤 Caio Mario F. N. Da Costa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:51
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/1073; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/7891; Y10T137/7892
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
180 words
A compressor having a housing, a cylinder within said housing; a piston for moving within said cylinder, means for defining with said cylinder a suction chamber and a compression chamber, said defining means including a plate with a through passage in a fluid communication with one of said chambers, said passage having an outlet in a first plane at one face of the plate, a blade valve having one end for sealing said outlet, said blade valve being elastically deformable in response to the pressure differential between the chamber with which the passage communicates and the interior of the housing; means for attaching the other end of said blade in a second plane spaced from said first plane, at least a portion of the blade between said ends being at an angle between the two planes to place the one end of the blade in sealing relationship to at least the edge of the passage outlet which is furthest from the blade other end when there is no pressure differential, between the communicating chamber and the inside of the housing.
Claim 2
Dependent Claim
180 words
A compressor having a housing, a cylinder within said housing; a piston for moving within said cylinder, means for defining with said cylinder a suction chamber and a compression chamber, said defining means including a plate with a through passage in a fluid communication with one of said chambers, said passage having an outlet in a first plane at one face of the plate, a blade valve having one end for sealing said outlet, said blade valve being elastically deformable in response to the pressure differential between the chamber with which the passage communicates and the interior of the housing; means for attaching the other end of said blade in a second plane spaced from said first plane, at least a portion of the blade between said ends being at an angle between the two planes to place the one end of the blade in sealing relationship to at least the edge of the passage outlet which is furthest from the blade other end when there is no pressure differential, between the communicating chamber and the inside of the housing.
Claim 3
Dependent Claim
44 words
The combination of claim 1 further comprising stop means attached to said plate in a plane spaced from said first plane and parallel to and above said second plane, said blade when the valve is in the fully open position engaging said stop means.
Claim 4
Dependent Claim
20 words
The combination of claim 1 wherein the portion of the blade at an angle extends to said blade one end.
Claim 5
Dependent Claim
50 words
The combination of claim 3 wherein the blade has a second bent section on the sealing portion so that said second bent section is fully seated to close the outlet of the passageway when there is substantially no pressure differential between the communicating chamber and the interior of the housing.
Claim 6
Dependent Claim
26 words
The combination according to claim 4, wherein the end portion of the sealing portion is parallel to said parallel plane containing the basic portion attaching point.
Claim 7
Dependent Claim
50 words
The combination of claim 1 wherein the blade has a second bent section on the sealing portion so that said second bent section is fully seated to close the outlet of the passageway when there is substantially no pressure differential between the communicating chamber and the interior of the housing.
Claim 8
Dependent Claim
26 words
The combination according to claim 6, wherein the end portion of the sealing portion is parallel to said parallel plane containing the basic portion attaching point.
Claim 9
Dependent Claim
25 words
The combination according to claim 1, wherein in the valve closing position, the pressure differential seats the blade sealing portion on the passage hole edge.
Claim 10
Dependent Claim
18 words
The combination according to claim 1, wherein the passage hole is the discharge hole of the compression chamber.
Claim 11
Dependent Claim
17 words
The combination according to claim 1, wherein the passage hole is the reciprocating type compressor suction hole.
Claim 12
Dependent Claim
25 words
The combination according to claim 1, wherein the passage hole outlet is located on the bottom of a recess in a face of said plate.
Claim 13
Dependent Claim
19 words
The combination of claim 11 further comprising a valve seat surrounding the opening of the outlet of said passage.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-17 | 1994-06-18 | 1994-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-17 | 1998-06-18 | 1998-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-17 | 2002-06-18 | 2002-12-18 | $7700.00 | Window Closed / Lapsed |