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US 4,260,047 AGranted
Friction disc and method of making same
AssigneeGeneral Motors Corporation
InventorTerry E. Nels
Life of this patent
Estimating the term…
Abstract
A friction disc for a clutch or brake is formed from a plurality of arcuate segments. The segments are stamped from a rectangular sheet of pregrooved friction material, interconnected by integral tab and slot structures to form an annulus, and bonded to an annular metal member.
Claims5
A process for manufacturing a friction disc for use in a clutch or brake assembly;
- the process comprising;
- hot-mold a plurality of parallel grooves at a predetermined depth in one side of a rectangular sheet of friction material;
- stamp a plurality of quarter-circle arcuate segments from said sheet of friction material, said stamping including the formation of a tab and slot at respective ends of each segment;
- interlock, through the tabs and slots, four of the segments to form an annular disc with adjacent segments having the respective grooves therein displaced 90.degree.;
- bond one annular disc with the grooved surface facing axially outward, to each side of an annular metal member to form a friction disc.
2 more elements
A method of manufacturing a friction disc for use in a clutch or brake assembly;
- the method comprising;
- hot-mold a plurality of parallel grooves at a predetermined depth in one side of a rectangular sheet of friction material;
- stamp a plurality of quarter-circle arcuate segments from said sheet of friction material, said stamping including the formation of a tab and slot at respective ends of each segment;
- interlock, through the tabs and slots, four of the segments to form an annular disc with adjacent segments having the respective grooves therein displaced 90.degree.;
- apply an adhesive to both sides of an annular metal member;
- bond one annular disc with the grooved surface facing axially outward, to each side of the annular metal member to form a friction disc.
3 more elements
A method of manufacturing a friction disc for use in a clutch or brake assembly;
- the method comprising;
- hot-mold a plurality of parallel grooves at a predetermined depth in one side of a rectangular sheet of friction material;
- stamp a plurality of quarter-circle arcuate segments from said sheet of friction material, said stamping including the formation of a tab and slot at respective ends of each segment;
- interlock, through the tabs and slots, four of the segments to form an annular disc with adjacent segments having the respective grooves therein displaced 90.degree.;
- apply an adhesive to the ungrooved side of the annular disc;
- bond one annular disc with the grooved surface facing axially outward, to each side of an annular metal member to form a friction disc.
3 more elements
A process of manufacturing a friction disc for use in a clutch or brake assembly;
- the process comprising;
- hot-mold a plurality of parallel grooves at a predetermined depth in one side of a rectangular sheet of friction material;
- apply a bonding adhesive to the ungrooved side of the rectangular sheet;
- stamp a plurality of quarter-circle arcuate segments from said sheet of friction material, said stamping including the formation of a tab and slot at respective ends of each segment;
- interlock, through the tabs and slots, four of the segments to form an annular disc with adjacent segments having the respective grooves therein displaced 90.degree.;
- bond one annular disc with the grooved surface facing axially outward, to each side of an annular metal member to form a friction disc.
3 more elements
Dependencies are inferred from the claim text.