Machine element or mechanism – Mechanical movements – Rotary to intermittent unidirectional motion
Patent
1991-11-12
1993-05-18
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Rotary to intermittent unidirectional motion
74435, 74567, 242200, 360 963, F16H 2900, F16H 5517
Patent
active
052110664
ABSTRACT:
A cam gear controlling mechanism is simple in structure, small in overall size and high in reliability of operation. The controlling mechanism comprises a cam gear having toothed and non-toothed portions and a cam groove, a trigger lever having a projection fitted in the cam groove and movable between arresting and non-arresting positions, a spring biasing the trigger lever to the non-arresting position, and electromagnetic means for releasably holding the trigger lever at the arresting position. When the cam gear is engaged with a driving gear, it is rotated in one direction by the latter, but when the driving gear is opposed to the non-toothed portion, a stopper projection on the cam gear is abutted with the engaging projection to lock the cam gear there. When the trigger lever is released from the electromagnetic means, it is moved to the non-arresting position to release the cam gear while the projection operates the cam groove to rotate the cam gear into engagement with the driving gear, and then, the cam groove operates the projection to return the trigger lever to the arresting position.
REFERENCES:
patent: 4215588 (1980-08-01), Komori et al.
patent: 4347919 (1982-09-01), Maeda
patent: 4630152 (1986-12-01), Kilstofte
patent: 4720755 (1988-01-01), Kamijo
patent: 4785362 (1988-11-01), Nozawa et al.
Ishikawa Jun
Koga Noriyuki
Eslinger Lewis H.
Herrmann Allan D.
Laub David W.
Maioli Jay H.
Sony Corporation
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