Bi-directional advance gear having a torque limiting clutch

Machine element or mechanism – Gearing – Directly cooperating gears

Patent

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Details

74438, 192 56R, 464 37, F16H 102, F16D 702

Patent

active

047021225

ABSTRACT:
A bi-directional advance gear having a torque limiting radial friction clutch is disclosed. The friction clutch comprises an annular member having an inner and outer periphery and having gear teeth defined by its outer periphery and radially inwardly projecting teeth on its inner periphery. A flat web substantially closes one face of the annular member to provide a shallow recess bounded by the projecting teeth and defines an opening concentric to the annular member. An inner member having a hub portion is rotatably mounted in the opening and has a pinion gear at one end. The other end of the hub has a plurality of radially extending rosette-shaped springs contained in the recess. Each spring has a pair of radially extending leg portions joined by an arcuate portion. Each arcuate portion has a lobe biased into engagement with the inwardly projecting teeth.

REFERENCES:
patent: 1562442 (1925-11-01), Evans
patent: 2527658 (1950-10-01), Sinclair
patent: 2544809 (1951-03-01), Stanley
patent: 2802557 (1957-08-01), Sebree
patent: 2824637 (1958-02-01), Unk et al.
patent: 3019595 (1958-06-01), Murrle
patent: 4061936 (1977-12-01), Woolley
patent: 4542812 (1985-09-01), Westley
patent: 4606443 (1986-08-01), Kimura

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