Wood turning – Turning tools
Patent
1988-10-12
1990-06-26
Braun, Leslie A.
Wood turning
Turning tools
192 58B, 464 24, F16D 4702, F16D 3500
Patent
active
049364340
ABSTRACT:
A clutch plate assembly (24) for a vehicle driveline includes a spring damping mechanism disposed in a parallel with a viscous shear damper mechanism (30) for damping spring recoil. The spring damping mechanism includes a set of pairs of relatively high rate helical compression springs (34,36) for transmitting torque and attenuating torsionals when a transmission input shaft (22) is connected to a load and a set of relatively low rate helical compression springs (38) connected in series with the high rate spring (34,36) for attenuating torsionals when the shaft (22) is not connected to a load. The viscous damper mechanism includes an annular housing (48) having first and second radially extending sidewalls (52,54) defining a compartment (48a) having a clutch assembly (50) disposed therein for viscous clutching coaction via a viscous shear oil. An inner member (58) of the clutch assembly (50) includes a dynamic seal assembly (66 or 72) molded integral therewith for sealing the inner extent of the compartment (48a). The inner extent of the housing includes a plurality of fasteners (56e) structurally interconnecting the inner extent of the sidewalls (52,54) to prevent relative axial movement of the sidewalls due to centrifugal effects. The housing sidewalls (52,54), and the clutch and seal assemblies are formed to facilitate a method for readily assembling and accurately filling the damper with viscous shear oil.
REFERENCES:
patent: 2316820 (1983-04-01), Thelander
patent: 2513379 (1950-07-01), Thelander
patent: 4601676 (1986-07-01), Tojima
patent: 4739866 (1988-04-01), Reik et al.
patent: 4782932 (1988-11-01), Janson
patent: 4790792 (1988-12-01), Bopp
patent: 7608883 (1986-09-01), Bupp
E. S. Bower, Design Practices-Passenger Car Automatic Transmissions, 1962, pp. 365 and 371.
Braun Leslie A.
Eaton Corporation
Rulon P. S.
Whitelaw Nicholas
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