Linear drive with non-rotating piston

Details Linear drive with non-rotating piston Linear drive with non-rotating piston

2006-10-31

2006-10-31

Lazo, Thomas E. (Department: 3745)

Expansible chamber devices

With guide or seal on cylinder end portion for piston or...

C092S16500R

Reexamination Certificate

active

07127982

ABSTRACT:
A fluid power linear drive including a housing having an inner surface defining a piston receiving space, a piston reciprocally movable within the piston receiving space and a cooperative engagement means provided on the inner surface of the housing and an outer surface of the piston to prevent the piston from rotating relative to the housing. The cooperative engagement means may take the form of a projection means and a cooperating longitudinal groove, wherein the inner surface of the piston receiving space has the projection means extending radially inwardly into the piston receiving space and the piston has the groove cooperatively engaging the projection means for preventing the piston from rotating within the piston receiving space.

REFERENCES:
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patent: 4480529 (1984-11-01), Winkler et al.
patent: 4838146 (1989-06-01), Stoll
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patent: 6536327 (2003-03-01), Zona
patent: 6755115 (2004-06-01), Stoll et al.
patent: 6766727 (2004-07-01), Krafft et al.
patent: 6931982 (2005-08-01), Zajac et al.
patent: 442777 (1996-02-01), None
patent: 0346716 (1989-12-01), None

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