Wrap spring coupling with improved spring
AssigneeWarner Electric Brake & Clutch Company
InventorCharles C. Gallo
Life of this patent
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Abstract
The helical spring of a wrap spring clutch is formed with a radially projecting protrusion which is spaced 180 degrees from one of the end tangs of the spring. The protrusion and the end tang are connected to the control collar of the clutch and cause the tensile force applied by the spring to be balanced angularly around the collar.
Claims7
A wrap spring coupling comprising two relatively rotatable members, an annular control element shiftable axially relative to said members, a coiled helical spring telescoped over said members, said spring having one end connected to said control element and having its opposite end connected to one of said members, and projecting means on said spring in angularly spaced relation with said one end of said spring and connected to said control element.
A wrap spring clutch comprising relatively rotatable input and output members, a control collar telescoped over and shiftable axially relative to said members, a coiled helical spring telescoped over said members and into said collar, said spring having one end tang connected to said collar and having an opposite end tang connected to one of said members, and a protrusion formed integrally with and projecting radially outwardly from the final coil of the spring located adjacent said one tank of said spring, said protrusion being spaced angularly from said one tang and being connected to said control collar.
Dependencies are inferred from the claim text.