Rolling contact element

Details Rolling contact element Rolling contact element

1980-10-24

1982-04-13

Footland, Lenard A.

Cutlery

308216, 308236, 308DIG11, F16C 3358

Patent

active

043244416

ABSTRACT:
The invention discloses a means of increasing the maximum allowable load on mechanical elements that roll on each other, such as the members of constant or variable speed friction drives, ball or roller bearings, rollers, etc. The increased allowable load is achieved by constructing at least one of the elements that roll on each other in two parts, including a rolling-surface part that is heavily preloaded by one or more additional parts that induce large compressive stresses on the principal planes normal to the rolling-surface. Optimum materials for the rolling-surface part are those that have a large modulus of resilience, since these materials afford the maximum allowable load capacity. In addition to hardened steels, such materials include shape-memory materials, reinforced plastics, bronze and aluminum alloys, and chilled cast iron. Shape-memory materials in particular have the advantage of simplifying the supporting structure, especially when the rolling surface is convex.

REFERENCES:
patent: 3910657 (1975-10-01), Dosne
patent: 4030786 (1977-06-01), Schluter
patent: 4089570 (1978-05-01), Markfelder et al.
patent: 4141606 (1979-02-01), Yamamura
patent: 4273391 (1981-06-01), Asberg
patent: 4289360 (1981-09-01), Zirin

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