Arrangement for gear change operation

Details Arrangement for gear change operation Arrangement for gear change operation

1996-04-24

1997-09-23

Marmor, Charles A.

Machine element or mechanism

Gearing

Interchangeably locked

92 52, 251 62, F16H 5900

Patent

active

056692650

ABSTRACT:
An apparatus for operating a device, e.g. through moving a piston rod. An outer cylinder has an inner cylinder movable between the end walls of the outer cylinder, whereby the inner cylinder is a piston movable in the outer cylinder. An inner piston in the inner cylinder is movable between the end walls of the inner cylinder. First and second fluid flow ducts communicate through the ends of the outer cylinder outside the inner cylinder. Third and fourth fluid flow passages communicate between the outer cylinder and the inner cylinder at the opposite respective sides of the inner piston in the inner cylinder, such that application of gas under pressure to one or the other of the first and second ducts causes movement first of the outer piston in the outer cylinder and then of the inner piston in the inner cylinder for moving the piston rod connected with the inner piston. Details of an embodiment of this staged movement cylinder piston arrangement are disclosed. The third and fourth passages are shaped for slower flow than the first and second ducts, so that movement of the inner piston and its rod can be in stages, the first stage rapid and the second stage slow and more controlled. The apparatus is particularly useful for shifting an operating device such as a gear change shaft to a gear box.

REFERENCES:
patent: 1430359 (1922-09-01), Canion
patent: 2828642 (1958-04-01), Bernard
patent: 3885458 (1975-05-01), Wright
patent: 4593606 (1986-06-01), Klatt et al.
patent: 5061078 (1991-10-01), Yada
patent: 5487527 (1996-01-01), Eggleston
patent: 5507197 (1996-04-01), Devaud et al.

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