Patent US3750848A successfully refreshed from Google Patents.
US3750848A
Expired / Lapsed
US
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Apparatus for lubricating a rotary swash plate type compressor
Assignee: Toyoda Co Ltd
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Filing: 1971-10-13
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Granted: 1973-08-07
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Expires: 1991-10-13
Abstract
Abstract An apparatus for lubricating a rotary swash plate type compressor characterized by an improved and simplified internal arrangement for distributing the lubricating oil separated from the refrigerant being returned continuously from a refrigerating circuit, into the slidably moving sections and elements of the compressor to give a smooth motion in addition to preventing the burning phenomenon of the sliding sections of the compressor, elimination of the oil pump, and the entire compressor-size being extremely compact.
Inventors
- 👤 S Nakayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:59
CPC Classifications
F; F04; F04B; F04B27/00; F04B27/08; F04B27/10; F04B27/1036; F04B27/1045; F04B27/109
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
196 words
An apparatus for lubricating a rotary swash-plate type compressor for compressing refrigerant which has entrained oil therein, said compressor being of the type including a pair of front and rear cylinder blocks which are combined with each other in an axial alignment to form combined blocks having a combining portion therebetween, separate housings mounted at front and end sections of said combined cylinder blocks and separated therefrom by separate respective valve plates, a drive shaft inserted in a shaft-bore formed in said combined cylinder blocks, a suction inlet to said compressor, a swash-plate keyed on said drive shaft in the vicinity of said combining portion and capable of rotating in a unitary state with said drive shaft, and a separate thrust bearing between each cylinder block and said swash-plate around said shaft bore; said apparatus comprising a chamber in each said block extending between said suction inlet and the respective valve plate and positioned to change the direction of refrigerant entering said inlet, first passageways extending from the bottoms of said chambers for directing oil separated in said chambers to said shaft, and second passagewayS directing oil from said first passageways means to said thrust bearings.
Claim 2
Independent Claim
196 words
An apparatus for lubricating a rotary swash-plate type compressor for compressing refrigerant which has entrained oil therein, said compressor being of the type including a pair of front and rear cylinder blocks which are combined with each other in an axial alignment to form combined blocks having a combining portion therebetween, separate housings mounted at front and end sections of said combined cylinder blocks and separated therefrom by separate respective valve plates, a drive shaft inserted in a shaft-bore formed in said combined cylinder blocks, a suction inlet to said compressor, a swash-plate keyed on said drive shaft in the vicinity of said combining portion and capable of rotating in a unitary state with said drive shaft, and a separate thrust bearing between each cylinder block and said swash-plate around said shaft bore; said apparatus comprising a chamber in each said block extending between said suction inlet and the respective valve plate and positioned to change the direction of refrigerant entering said inlet, first passageways extending from the bottoms of said chambers for directing oil separated in said chambers to said shaft, and second passagewayS directing oil from said first passageways means to said thrust bearings.
Claim 3
Dependent Claim
51 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 1 characterized in that said first passageways for leading the separated oil comprise oil grooves pierced through the junction-surfaces between said cylinder blocks and said valve plates, and said second passageways comprise the shaft-bore of said combined cylinder blocks.
Claim 4
Dependent Claim
44 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 1 characterized in that said first passageways for leading the separated oil comprise oil channels arranged in said cylinder blocks, and said second passageways comprise the shaft-bore of said combined cylinder blocks.
Claim 5
Dependent Claim
44 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 1 characterized in that said first passageways for leading the separated oil comprise oil channels arranged in said valve plates, and said second passageways comprise the shaft-bore of said combined cylinder blocks.
Claim 6
Dependent Claim
83 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 1 characterized in that said first passageways for leading the separated oil comprise oil grooves pierced through the junction-surface between said rear cylinder block and said corresponding valve plate, and said second passageways comprise an oil hole longitudinally bored in said drive shaft having an opening at its rear end communicating with said first passageways and open oil inlets located to direct oil from said oil hole to said thrust bearings.
Claim 7
Dependent Claim
74 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 1 characterized in that said first passageways for leading the separated oil comprise oil channels arranged in said cylinder blocks, and said second passageways comprise an oil hole longitudinally bored in said drive shaft having an opening at its rear end communicating with said first passageways and open oil inlets located to direct oil from said oil hole to said thrust bearings.
Claim 8
Dependent Claim
74 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 1 characterized in that said first passageways for leading the separated oil comprise oil channels arranged in said valve plates, and said second passageways comprise an oil hole longitudinally bored in said drive shaft having an opening at its rear end communicating with said first passageways and open oil inlets located to direct oil from said oil hole to said thrust bearings.
Claim 9
Dependent Claim
62 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 1 comprising a supplementary oil reservoir within at least one of said front and rear housings, characterized in that said first passageways for leading the separated oil extend between a chamber and said supplementary oil reservoir and said second passageways extend through an axial through-hole in said corresponding valve plate.
Claim 10
Dependent Claim
41 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 8 comprising a main oil reservoir at the lower portion of said compressor and comprising an oil channel means connecting said supplementary oil reservoir to the main oil reservoir.
Claim 11
Dependent Claim
54 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 8 comprising a main oil reservoir at the lower portion of said compressor and comprising an oil channel means connecting said supplementary oil reservoir to the main oil reservoir said oil channel means extending at least partly in the corresponding cylinder block.
Claim 12
Dependent Claim
53 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 8 comprising a main oil reservoir at the lower portion of said compressor and comprising an oil channel means connecting said supplementary oil reservoir to the main oil reservoir said oil channel means extending at least partly in a valve plate.
Claim 13
Dependent Claim
49 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 1 comprisinG supplementary oil reservoirs found within said front and rear housings characterized in that said first passageways for leading the separated oil extend via axial through holes in said respective valve plates to said supplementary reservoirs.
Claim 14
Dependent Claim
43 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 12 comprising a main oil reservoir at the lower portion of said compressor, and further comprising an oil channel connecting one of said supplementary oil reservoirs to the main oil reservoir.
Claim 15
Dependent Claim
53 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 12 comprising a main oil reservoir at the bottom portion of said compressor, and comprising oil channels connecting said supplementary oil reservoirs to the main oil reservoir, at least a part of the oil channels being in the corresponding cylinder block.
Claim 16
Dependent Claim
52 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 12 comprising a main oil reservoir at the bottom portion of said compressor, and comprising oil channels connecting said supplementary oil reservoir to the main oil reservoir at least a part of the oil channels being in a valve plate.
Claim 17
Dependent Claim
67 words
An apparatus for lubricating a rotary swash-plate type compressor according to claim 1 wherein said chambers have larger cross sectional areas than said suction inlet to said compressor, whereby the running speed of the refrigerant in said chambers is less than in said inlet, and oil remaining in the refrigerant separates into oil particles which fall under the force of gravity to the bottoms of said chambers.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |