Patent US4325680A successfully refreshed from Google Patents.
US4325680A
Expired / Lapsed
US
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Valve system for encapsulated motor-compressor units
Assignee: Necchi Compressori Srl
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Filing: 1980-12-09
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Granted: 1982-04-20
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Expires: 2000-12-09
Abstract
Abstract The invention relates to a valve system for encapsulated motor-compressor units comprising a cylinder, a piston moving with reciprocating motion in the cylinder, a valve plate which upperly closes the cylinder, and a head fixed on to the valve plate, wherein in the valve plate there are provided two delivery ports having cross-sections of different size, so as to create in the lamina valve an asymmetric elastic deformation which favors gradual impact of the valve against the valve plate at the end of the compression cycle.
Inventors
- 👤 Alfredo Bar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:49
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/11; F02B77/13; F04; F04B; F04B39/00; F04B39/10; F04B39/1073; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/7859; Y10T137/7879; Y10T137/7887
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A valve sytem for encapsulated motor-compressor units comprising a cylinder, a piston moving with reciprocating motion in said cylinder, a valve plate which upperly closes said cylinder, a head fixed on to said valve plate, said valve plate defining therein two delivery ports having cross-sections of different size, and a delivery valve positioned over said delivery ports, said delivery valve comprising two pins attached to said valve plate, two laminae, a stop plate for said laminae, a crosspiece and retention spring, said laminae, stopplate, crosspiece, and retention spring being retained by said pins, said two delivery ports creating an asymmetric elastic deformation which favors gradual impact of said valve against said valve plate at the end of the compression cycle.
Claim 2
Dependent Claim
120 words
A valve sytem for encapsulated motor-compressor units comprising a cylinder, a piston moving with reciprocating motion in said cylinder, a valve plate which upperly closes said cylinder, a head fixed on to said valve plate, said valve plate defining therein two delivery ports having cross-sections of different size, and a delivery valve positioned over said delivery ports, said delivery valve comprising two pins attached to said valve plate, two laminae, a stop plate for said laminae, a crosspiece and retention spring, said laminae, stopplate, crosspiece, and retention spring being retained by said pins, said two delivery ports creating an asymmetric elastic deformation which favors gradual impact of said valve against said valve plate at the end of the compression cycle.
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) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |