US4385875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary compressor with fluid diode check value for lubricating pump
Assignee: Toshiba Corp
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Filing: 1980-07-21
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Granted: 1983-05-31
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Expires: 2000-07-21
Abstract
Abstract In a rotary compressor unit including a compressor comprising a rotor rotatable in a cylinder, a blade in contact with an outer surface of the rotor and reciprocated thereby in a radial direction in a closed chamber formed in the cylinder, the chamber being defined by longitudinally spaced apart end plates on both sides of the cylinder, suction and discharge and passages opening through the end plates into the closed chamber, and a check valve provided at least in the suction passage, the check valve comprises a fluid diode.
Inventors
- 👤 Takaki Kanazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:46
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/02; F04C29/025; F04B; F04B39/00; F04B39/02; F04B39/0223; F04B39/023; F04B39/0238; F04B39/0246; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2087; Y10T137/2109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A rotary compressor, comprising: a sealed horizontal casing; a hollow cylinder secured to an inner surface of said casing; two end plates secured to both ends of said cylinder; a roller eccentrically rotatable within said cylinder; shaft means for rotating said roller; a closed chamber radially extending through said cylinder, said chamber being defined by lower portions of said end plates, said end plates being made from a single piece of metal plate; a blade in contact with an outer surface of said roller to reciprocate in said closed chamber, the axial width of said chamber being defined by said two end plates; suction and discharge passages provided through said end plates for sending a lubricant contained in a bottom portion of said casing outside of said closed chamber into and out of said closed chamber; and a fluid diode type check valve provided in said suction passage, said check valve being press formed integrally with said metal plate.
Claim 2
Dependent Claim
159 words
A rotary compressor, comprising: a sealed horizontal casing; a hollow cylinder secured to an inner surface of said casing; two end plates secured to both ends of said cylinder; a roller eccentrically rotatable within said cylinder; shaft means for rotating said roller; a closed chamber radially extending through said cylinder, said chamber being defined by lower portions of said end plates, said end plates being made from a single piece of metal plate; a blade in contact with an outer surface of said roller to reciprocate in said closed chamber, the axial width of said chamber being defined by said two end plates; suction and discharge passages provided through said end plates for sending a lubricant contained in a bottom portion of said casing outside of said closed chamber into and out of said closed chamber; and a fluid diode type check valve provided in said suction passage, said check valve being press formed integrally with said metal plate.
References Cited (Backward Citations)
US2212717A
Cited
US2422972A
Cited
US3324891A
Cited
US4112977A
Cited
JPS5431918A
Cited
US4249575A
Cited
US4219314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |