Patent US3577891A successfully refreshed from Google Patents.
US3577891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swash plate compressor
Assignee: Hitachi Ltd
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Filing: 1969-08-20
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Granted: 1971-05-11
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Expires: 1989-08-20
Abstract
Abstract Two cylinder blocks of a swash plate compressor are so shaped as to form a chamber between the cylinder block assembly, a shell and a head cover of the compressor near the junction of said two cylinder blocks. The chamber thus formed is communicated with the discharge ends of respective cylinder bores through high pressure passageways having a cross-sectional area smaller than that of said chamber. A pipe having a large number of apertures perforated through the wall thereof is disposed at that end of the high pressure passageway which is open in said chamber.
Inventors
- 👤 Mamoru Nemoto
- 👤 Seijiro Tani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:35
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0027; F04B39/0055; F04B27/00; F04B27/08; F04B27/10; F04B27/1036; F04B27/1081; F04B27/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
In a swash plate compressor of the type wherein a swash plate is fixedly mounted on a drive shaft and a plurality of pistons in engagement with said swash plate are slidably received in respective cylinder bores formed in a cylinder block in concentrical relation to the axis thereof whereby said pistons are caused to make a reciprocatory movement in the respective cylinder bores incident to rotation of the drive shaft, said cylinder block being fitted in a shell and a head cover, a silencing chamber being formed between said shell and head cover, said silencing chamber being communicaTed with the discharge ends of the respective cylinder bores through high pressure passageways and also with a discharge port of the compressor, and said high pressure passageway being communicated with said silencing chamber through a plurality of apertures.
Claim 2
Dependent Claim
137 words
In a swash plate compressor of the type wherein a swash plate is fixedly mounted on a drive shaft and a plurality of pistons in engagement with said swash plate are slidably received in respective cylinder bores formed in a cylinder block in concentrical relation to the axis thereof whereby said pistons are caused to make a reciprocatory movement in the respective cylinder bores incident to rotation of the drive shaft, said cylinder block being fitted in a shell and a head cover, a silencing chamber being formed between said shell and head cover, said silencing chamber being communicaTed with the discharge ends of the respective cylinder bores through high pressure passageways and also with a discharge port of the compressor, and said high pressure passageway being communicated with said silencing chamber through a plurality of apertures.
Claim 3
Dependent Claim
173 words
In a swash plate compressor of the type wherein a swash plate is fixedly mounted on a drive shaft and a plurality of pistons in engagement with said swash plate are slidably received in respective cylinder bores formed in a cylinder block in concentrical relation to the axis thereof whereby said pistons are caused to make a reciprocatory movement in the respective cylinder bores incident to rotation of the drive shaft, said cylinder block consisting of two sections defining a recessed portion near the junction thereof and fitted in a shell and a head cover so as to form a silencing chamber between it and said shell and head cover, said silencing chamber being communicated with the discharge ends of the respective cylinder bores through high pressure passageways formed in the cylinder blocks and also with a discharge port of the compressor, and said high pressure passageway being communicated with said silencing chamber through a pipe fixed to each section of the cylinder block and having a large number of apertures formed therein.
Claim 4
Dependent Claim
173 words
In a swash plate compressor of the type wherein a swash plate is fixedly mounted on a drive shaft and a plurality of pistons in engagement with said swash plate are slidably received in respective cylinder bores formed in a cylinder block in concentrical relation to the axis thereof whereby said pistons are caused to make a reciprocatory movement in the respective cylinder bores incident to rotation of the drive shaft, said cylinder block consisting of two sections defining a recessed portion near the junction thereof and fitted in a shell and a head cover so as to form a silencing chamber between it and said shell and head cover, said silencing chamber being communicated with the discharge ends of the respective cylinder bores through high pressure passageways formed in the cylinder blocks and also with a discharge port of the compressor, and said high pressure passageway being communicated with said silencing chamber through a pipe fixed to each section of the cylinder block and having a large number of apertures formed therein.
References Cited (Backward Citations)
US3212483A
Cited
US3462949A
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US3360193A
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US3411705A
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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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |