Position control device with dual manual controls

Details Position control device with dual manual controls Position control device with dual manual controls

1983-02-22

1986-05-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250231SE, G01V 904

Patent

active

045874190

ABSTRACT:
A position control device includes a generally rectangular, two-part housing having orthogonal walls, two of which have openings formed therein. A shaft is rotatably mounted in the housing on bearings which are respectively received in recesses in support blocks on the housing bottom. One end of the shaft projects outwardly through one of the openings and may have a knob secured thereto outside the housing. One-part and two-part shafts are disclosed. A control wheel is mounted coaxially on the shaft and projects through the other opening for manual rotation by a user. The support blocks cooperate with retainers on the housing cover to accommodate slight movement of the bearings in directions perpendicular to the plane of the control wheel opening, the shaft being resiliently biased toward that opening. The two parts of the housing cooperate to provide horizontal and vertical attachment passages for receiving fasteners so that the two orthogonal walls may respectively be attached to vertical and horizontal support surfaces.

REFERENCES:
patent: 3304434 (1967-02-01), Koster
patent: 3789218 (1974-01-01), Blount
patent: 4007383 (1977-02-01), Wessner
patent: 4163323 (1979-08-01), Bud
patent: 4195938 (1980-04-01), Velazquez
patent: 4246703 (1981-01-01), Robinet
patent: 4404865 (1983-09-01), Kim
patent: 4503730 (1985-03-01), Irvin
patent: 4505165 (1985-03-01), Wiczer

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