Work holders – Miscellaneous
Patent
1987-10-13
1989-10-10
Sikes, William L.
Work holders
Miscellaneous
A61G 1300
Patent
active
048726575
ABSTRACT:
A control panel (14) contains four control levers (18). A control valve having a valve slide (55) capable of sliding in a valve sleeve (79) is assigned to each control lever (18). An electric motor (68) on whose drive shaft (70) a bevel gear (64) is mounted in a rotationally solid manner is also provided for each control lever (18). The bevel gear (64) engages with another bevel gear (66) that is connected with a shaft journal (62) in a rotationally solid manner. A follower pin (72) is eccentrically mounted in the shaft journal (64); it passes through one end of a push rod (57) and projects into a groove (73) in a shaft journal (58) passed through by the assigned control lever (18). In this manner, the two shaft journals (58, 62) are connected with each other through the follower pin (72) in a rotational manner. The other end of the push rod (57) is connected through a coupling (75) with a piston rod (56) that is in turn fastened to the valve slide (55). In the arrangement described above, the control valve can be actuated at any time either by the control lever (18) or the electric motor (68). The simultaneous action of the control lever and the electric motor on the control valve is also possible without damage resulting thereby.
REFERENCES:
patent: 3868103 (1975-02-01), Pageot et al.
patent: 4148472 (1979-04-01), Rais et al.
patent: 4195829 (1980-04-01), Reser
M. Schaerer AG
Sikes William L.
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