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US 7,111,833 B2Granted
Dual disc spring
AssigneeGeneral Motors Corporation
InventorScott H. Wittkopp
Life of this patent
Estimating the term…
Abstract
A dual spring includes a pair of conically-shaped spring sections, which are joined at a common fulcrum. One of the spring sections is disposed radially inward from the fulcrum and the other of the spring sections is disposed radially outward from the fulcrum. Both of the conical sections open axially in the same direction relative to the fulcrum section.
Claims3
A dual torque transmitting mechanism with a dual acting spring comprising:
- a first piston member;
- a second piston member;
- a first conical spring section;
- a second conical spring section;
- a fulcrum section joining said first and second conical spring sections;
- means for positioning said fulcrum section at a stationary position;
- and
- said first conical spring section extending outward from said fulcrum section to engage said first piston member and said second conical spring section extending inward from said fulcrum section to engage said second piston member.
5 more elements
Dependencies are inferred from the claim text.