EP0078116A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Dual plate friction clutch
Assignee: Whitnash PLC
•
Filing: 1982-10-07
•
Granted: —
•
Expires: 2002-10-07
Abstract
Abstract A dual plate friction clutch has opposed hydraulic cylinders (16,17) and a single interposed reaction plate (13). The plate (13) is driven by a plurality of cylindrical pins (25) extending between the housings of the cylinders (16,17) and passing through apertures of the plate (13). Pressure plates (26) are provided between each cylinder and a respective driven member of the clutch, the plates (26) also being driven by the pins. One or more pins (25) may be hollow to provide a fluid feed duct to one of the hydraulic cylinders.
Inventors
- 👤 John Pius Burke
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 01:16
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/10; F16D25/06; F16D25/062; F16D25/063; F16D25/0635
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
A dual plate friction clutch comprising a drive member (12), a cover member (14) fixed for rotation with the drive member (12), two facing hydraulic cylinders (16,17) provided one each in said drive and cover members, an annular reaction member (13) extending between the cylinders (16,17) and fixed for rotation with the drive member (12), two driven members (21,22) interposed one each between the reaction member (13) and a respective hydraulic cylinder and two pressure plates (26) fixed for rotation with the drive member (12) and interposed one each between a respective driven member and hydraulic cylinder, characterised thereby that a plurality of guide pins (25) are provided between said drive and cover members, the guidepins passing through apertures of the pressure plates (26) to both hold the pressure plates for rotation with the drive member and guide the pressure plates for movement axially of the clutch.
Claim 2
Dependent Claim
147 words
A dual plate friction clutch comprising a drive member (12), a cover member (14) fixed for rotation with the drive member (12), two facing hydraulic cylinders (16,17) provided one each in said drive and cover members, an annular reaction member (13) extending between the cylinders (16,17) and fixed for rotation with the drive member (12), two driven members (21,22) interposed one each between the reaction member (13) and a respective hydraulic cylinder and two pressure plates (26) fixed for rotation with the drive member (12) and interposed one each between a respective driven member and hydraulic cylinder, characterised thereby that a plurality of guide pins (25) are provided between said drive and cover members, the guidepins passing through apertures of the pressure plates (26) to both hold the pressure plates for rotation with the drive member and guide the pressure plates for movement axially of the clutch.
Claim 3
Dependent Claim
33 words
A clutch according to Claim 1, characterised thereby that one or more of the guide pins (25) is hollow and comprises part of a fluid feed duct to one of said hydraulic cylinders.
Claim 4
Dependent Claim
31 words
A clutch according to Claim 2, characterised thereby that the pressure plates (26) are uged apart by a plurality of equispaced coiled compression springs (39) located on the guide pins (25).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.