Patent US4782569A successfully refreshed from Google Patents.
US4782569A
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Method for manufacturing a rolling piston rotary compressor
Assignee: DeVilbiss Co
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Filing: 1987-09-21
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Granted: 1988-11-08
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Expires: 2007-09-21
Abstract
Abstract A method for manufacturing a rolling piston rotary compressor in which a cylinder block is adjusted during manufacture to provide a desired vane slot width. The cylinder block is provided with a thin walled section located radially out from the vane slot. The thin walled section is plastically deformed during manufacture to provide a desired vane slot width for receiving a previously finished blade having a known thickness.
Inventors
- 👤 Mark W. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:51
CPC Classifications
B; B21; B21K; B21K3/00; F; F01; F01C; F01C21/00; F01C21/10; F01C21/104; F01C21/106; B23; B23P; B23P19/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236; Y10T29/49243; Y10T29/49826; Y10T29/49863; Y10T29/4987
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A method for manufacturing a cylinder block for a rolling piston rotary compressor comprising the steps of forming a cylinder block having a cylinder bore and a vane slot extending from said bore to a thin walled section, finishing the vane slot to a width less than the thickness of a vane to be inserted into said vane slot, and plastically deforming the thin walled section to expand the vane slot to a desired width for receiving said vane.
Claim 2
Independent Claim
79 words
A method for manufacturing a cylinder block for a rolling piston rotary compressor comprising the steps of forming a cylinder block having a cylinder bore and a vane slot extending from said bore to a thin walled section, finishing the vane slot to a width less than the thickness of a vane to be inserted into said vane slot, and plastically deforming the thin walled section to expand the vane slot to a desired width for receiving said vane.
Claim 3
Dependent Claim
32 words
A method for manufacturing a cylinder block for a rolling piston rotary compressor, as set forth in claim 1, wherein said thin walled section is deformed from an arc to a cord.
Claim 4
Dependent Claim
35 words
A method for manufacturing a cylinder block for a rolling piston rotary compressor, as set forth in claim 1, wherein said thin walled section is deformed by decreasing the thickness of said thin walled section.
Claim 5
Independent Claim
101 words
A method for manufacturing a rolling piston rotary compressor comprising the steps of forming a cylinder block with a cylinder bore and a vane slot extending from said bore to a thin walled section, finishing the cylinder and the vane slot, said finished vane slot having a width, manufacturing a blade having finished surfaces and a thickness greater than the finished vane slot width, measuring the blade thickness, determining a desired vane slot width from the measured blade thickness, plastically deforming the thin walled section to expand the vane slot width to the desired width, and completing manufacture of the compressor.
Claim 6
Independent Claim
101 words
A method for manufacturing a rolling piston rotary compressor comprising the steps of forming a cylinder block with a cylinder bore and a vane slot extending from said bore to a thin walled section, finishing the cylinder and the vane slot, said finished vane slot having a width, manufacturing a blade having finished surfaces and a thickness greater than the finished vane slot width, measuring the blade thickness, determining a desired vane slot width from the measured blade thickness, plastically deforming the thin walled section to expand the vane slot width to the desired width, and completing manufacture of the compressor.
Claim 7
Dependent Claim
28 words
A method for manufacturing a rolling piston rotary compressor, as set forth in claim 4, wherein said thin walled section is deformed from an arc to a cord.
Claim 8
Dependent Claim
31 words
A method for manufacturing a rolling piston rotary compressor, as set forth in claim 4, wherein said thin walled section is deformed by reducing the thickness of said thin walled section.
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) | 1991-11-08 | 1992-05-09 | 1992-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-08 | 1996-05-09 | 1996-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-08 | 2000-05-09 | 2000-11-08 | $7700.00 | Window Closed / Lapsed |