Machine element or mechanism – Elements – Cranks and pedals
Patent
1985-03-29
1987-03-24
Schwartz, Larry I.
Machine element or mechanism
Elements
Cranks and pedals
745944, 384458, G05G 108
Patent
active
046515909
ABSTRACT:
a bicycle-type pedal assembly has a frame sleeve extending along and centered on a sleeve axis and having a pair of axially opposite sleeve ends, and a pedal shaft extending coaxially through the sleeve, having an end carrying a radially projecting and unitarily formed pedal and a sprocket, and having a pair of radially outwardly directed races also directed axially outward away from each other. This shaft has a predetermined outer diameter at the races and is of smaller diameter therebetween. A bearing tube including an inner tube part has an external thread and an outer tube part having an internal thread. The parts are coaxial to the sleeve and shaft with the threads engaged and have an inner diameter greater than the other diameter of the shaft. Thus the shaft can be inserted axially through the tube parts, which have respective outer tube ends forming radially inwardly directed tube races directed axially inward toward each other and confronting the respective shaft races. Respective annular rows of roller elements are engaged between the tube races and the respective shaft races. Respective end caps snugly fit between the shaft, tube, and sleeve and generally axially close the tube and sleeve around the shaft.
REFERENCES:
patent: 627946 (1899-06-01), Wilcox
patent: 986596 (1911-03-01), Schenck
Dubno Herbert
Ross Karl F.
Schwartz Larry I.
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