US3557664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical reciprocating compressor of horizontal type for a car cooler of an automobile
Assignee: Nissan Motor Co Ltd
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Filing: 1969-07-08
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Granted: 1971-01-26
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Expires: 1989-07-08
Abstract
Abstract A cylindrical reciprocating compressor of horizontal type for a car cooler of an automobile having an oil reservoir disposed at one end portion of the cylindrical casing for supplying lubricant to the hydraulic circuit of the compressor. This compressor is low enough to be disposed under the hood (bonnet) of the automobile.
Inventors
- 👤 Seiji Akaike
- 👤 Tsutomu Nomura
- 👤 Takayoshi Kimura
- 👤 Masayuki Washio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:28
CPC Classifications
F; F04; F04B; F04B27/00; F04B27/08; F04B27/10; F04B27/1036; F04B27/109; F04B27/1081
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
306 words
In a cylindrical reciprocating compressor of horizontal type for a car cooler of an automobile having a casing, a cylinder block, a single-acting piston, a swashplate, a drive shaft, a valve plate for closing a bore divided in the cylinder block at one end to be operated by a valve mechanism for actuating the intake or discharge of a gas from or into the bore in response to the movement of said piston, a cylinderhead disposed at one end of the cylinder block sealingly in contact with the valve plate and inserted into the end of the casing and including a suction chamber and a discharge chamber, a head cover provided sealingly in contact with the cylinderhead and including a feed port connected with the refrigerating cycle, and a return port connected with the returning system of the refrigerating cycle, a lubricant system of said compressor comprising: an oil reservoir formed in the lower portion of the head cover; an oil reservoir formed in the lower portion of the head cover; an oil suction conduit mounted on the head cover and immersed into the oil in the oil reservoir below the standard surface of the oil; an oil pump driven by the drive shaft for intaking the oil in the oil reservoir through said conduit for supplying the lubricant oil into the drive shaft itself and to the surface of the swashplate for driving said piston; an oil passage vertically formed in the cylinderhead and including an outlet communicated with the oil reservoir and an inlet communicated with the lower portion of the casing wherein the lubricant is fed by means of the pressure difference between said casing and oil reservoir due to the blowby gas pressure; and said oil reservoir being formed in the lower portion of said head cover thereby said casing formed cylindrical.
Claim 2
Dependent Claim
306 words
In a cylindrical reciprocating compressor of horizontal type for a car cooler of an automobile having a casing, a cylinder block, a single-acting piston, a swashplate, a drive shaft, a valve plate for closing a bore divided in the cylinder block at one end to be operated by a valve mechanism for actuating the intake or discharge of a gas from or into the bore in response to the movement of said piston, a cylinderhead disposed at one end of the cylinder block sealingly in contact with the valve plate and inserted into the end of the casing and including a suction chamber and a discharge chamber, a head cover provided sealingly in contact with the cylinderhead and including a feed port connected with the refrigerating cycle, and a return port connected with the returning system of the refrigerating cycle, a lubricant system of said compressor comprising: an oil reservoir formed in the lower portion of the head cover; an oil reservoir formed in the lower portion of the head cover; an oil suction conduit mounted on the head cover and immersed into the oil in the oil reservoir below the standard surface of the oil; an oil pump driven by the drive shaft for intaking the oil in the oil reservoir through said conduit for supplying the lubricant oil into the drive shaft itself and to the surface of the swashplate for driving said piston; an oil passage vertically formed in the cylinderhead and including an outlet communicated with the oil reservoir and an inlet communicated with the lower portion of the casing wherein the lubricant is fed by means of the pressure difference between said casing and oil reservoir due to the blowby gas pressure; and said oil reservoir being formed in the lower portion of said head cover thereby said casing formed cylindrical.
Claim 3
Dependent Claim
40 words
A lubricant system as set forth in claim 1 further comprising: a partition formed in said head cover for providing an oil separating chamber and oil reservoir; and means for passing between the oil separating chamber and the oil reservoir.
Claim 4
Dependent Claim
23 words
A lubricant system as set forth in claim 2, wherein said means is a gap provided between said head cover and said cylinderhead.
Claim 5
Dependent Claim
19 words
A lubricant system as set forth in claim 2, wherein said means is a hole formed in said partition.
Claim 6
Dependent Claim
31 words
A lubricant system as set forth in claim 1, wherein the outlet of said oil passage is vertically disposed substantially at the standard level of the lubricant in the oil reservoir.
Claim 7
Dependent Claim
45 words
A lubricant system as set forth in claim 1, wherein said oil passage formed in said cylinderhead and passing through a point disposed substantially above the standard level of the lubricant and including a hole formed at the point and communicated with the oil reservoir.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |