Cam and follower arrangement

Details Cam and follower arrangement Cam and follower arrangement

1980-02-26

1982-02-16

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With monochromator structure

74569, 350315, 356334, G01J 312, F16H 5306, G02B 700

Patent

active

043156916

ABSTRACT:
A cam and follower arrangement in which the cam consists of a track carried by a rotatable member. The track has one or more abrupt directional transitions (17) and the follower (17) is biassed to engage one wall or the other (21) of the track (21) appropriate to the direction of rotation of the member by means including a direct-current electric motor operated in a stalled condition. The arrangement may be employed in a monochromator for spectrophotometric apparatus to drive a filter-holder to position one of a number of optical filters arranged in the incoming beam of light.

REFERENCES:
patent: 3614227 (1971-10-01), George et al.
patent: 4082461 (1978-04-01), Mould

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