EP0022103A1
Expired / Lapsed
EP
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A rotary vane machine
Assignee: Institut Cerac SA
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Filing: 1980-06-10
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Granted: —
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Expires: 2000-06-10
Abstract
Abstract A rotary vane machine having vanes comprising two layers of glass fibre reinforced PTFE at a distance from each other and an intermediate layer containing an inorganic solid lubricant, e.g. lead.
Inventors
- 👤 George Anthony Cooper
- 👤 Jacques Berlie
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 14:56
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F05; F05C; F05C2253/00; F05C2253/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
123 words
A rotary vane machine comprising a cylinder (11) having two opposite end plates (13), inlet (30) and outlet means (31) for a compressible working medium, a rotor (16) eccentrically journalled in the cylinder, and a number of vanes (20) slidable in substantially radial slots (19) in the rotor to maintain sealing contact with the cylinder during rotation of the rotor, characterized thereby that each vane (20) comprises at least two layers (31,34) at a distance from each other and containing a fluorocarbon polymer reinforced with glass fibre or carbon fibre, each said vane (20) comprising a further layer (33) between said reinforced layers, said further layer comprising a metal-based solid lubricant at least at the surface in sealing contact with the cylinder (11).
Claim 2
Dependent Claim
123 words
A rotary vane machine comprising a cylinder (11) having two opposite end plates (13), inlet (30) and outlet means (31) for a compressible working medium, a rotor (16) eccentrically journalled in the cylinder, and a number of vanes (20) slidable in substantially radial slots (19) in the rotor to maintain sealing contact with the cylinder during rotation of the rotor, characterized thereby that each vane (20) comprises at least two layers (31,34) at a distance from each other and containing a fluorocarbon polymer reinforced with glass fibre or carbon fibre, each said vane (20) comprising a further layer (33) between said reinforced layers, said further layer comprising a metal-based solid lubricant at least at the surface in sealing contact with the cylinder (11).
Claim 3
Dependent Claim
35 words
A rotary vane machine according to claim 1, characterized thereby that each vane (20) comprises a laminate of a number of reinforced layers (41) being separated by non-reinforced layers (42) containing the inorganic solid lubricant.
Claim 4
Dependent Claim
36 words
A rotary vane machine according to claim 1, characterized thereby that each vane (20) comprises a laminate of a number of reinforced layers (45) being directly bonded to each other and containing the inorganic solid lubricant.
Claim 5
Dependent Claim
35 words
A rotary vane machine according to claim 1, 2 or 3, characterized thereby that the inorganic solid lubricant is provided only in the neighbourhood of the surface (92) in sealing contact with the cylinder (11).
Claim 6
Dependent Claim
25 words
A rotary vane machine according to any of the preceding claims, characterized thereby that the reinforced layers (31,34) comprise PTFE reinforced. with woven glass fibre.
Claim 7
Dependent Claim
23 words
A rotary vane machine according to any of the preceding claims, characterized thereby that the inorganic solid lubricant is lead or lead oxide.
Claim 8
Dependent Claim
21 words
A rotary vane machine according to claim 2, characterized thereby that the non-reinforced layers (42) are foils of fluorinated ethylene-propylene polymer.
Claim 9
Dependent Claim
21 words
A rotary vane machine according to claim 2, characterized thereby that the non-reinforced layers (42) are foils of poly flouor-alkoxy polymer.
Claim 10
Dependent Claim
24 words
A rotary vane machine according to any of the preceding claims, characterized thereby that the reinforced layers (31,34) comprise PTFE reinforced with carbon fibre.
References Cited (Backward Citations)
GB795204A
Cited
GB1336128A
Cited
GB1324248A
Cited
GB1324443A
Cited
FR2151982A5
Cited
DE2600972A1
Cited
GB2213552A
Cited
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