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US 2004/0069589 A1Published application
Diaphragm spring for a friction clutch
AssigneeZF Sachs AG
InventorsMartin Pahrisch, Ronald Beck, Alfred Schraut, Erwin Ziegler, Frank Hirschmann
Life of this patent
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Abstract
A diaphragm spring for a friction clutch includes a ring-like body area and a plurality of spring tongues arranged at the inner edge in a row in a circumferential direction and extending radially inward from the body area. Openings are formed between adjacent spring tongues, each opening having a radially outer base area, at least one of the openings being limited in the circumferential direction by a wall area having a curvature which increases as the wall proceeds from the base area.
Claims7
A diaphragm spring for a friction clutch, comprising:
- a ring-like body area;
- a plurality of spring tongues extending radially inward from said body area;
- and
- a plurality of openings formed between adjacent spring tongues, each opening having a base area which is radially outermost in said opening, and a pair of walls extending radially inward from said base area, at least one of said walls having a wall area with a curvature which increases with increasing distance from the base area.
1 more element
Dependencies are inferred from the claim text.