Rodless power cylinder

Details Rodless power cylinder Rodless power cylinder

1998-06-09

2000-07-25

Look, Edward K.

Expansible chamber devices

Sealed opening in longitudinal wall of chamber for receiving...

92 85R, 277567, 277644, F01B 2900

Patent

active

06092456&

ABSTRACT:
A rodless power cylinder includes a tube having an oblong circular cross section bore and a slit extending along the longitudinal axis of the bore and penetrating the wall of the tube. The bore includes a slit-side inner surface on which the slit opens and a counter-slit-side inner surface which opposes the slit-side inner surface. The slit-side inner surface of the bore is formed as a flat plane or a curved plane having substantially no curvature. Further, recesses are formed on the slit side inner surface at both sides of the slit. The surfaces of the recesses are formed as curved planes having a curvature larger than the curvature of the slit-side inner surface. An inner seal band made of a flat, thin metal band is provided to seal the opening of the slit. The seal band contacts the surface of the recess at its transverse edges. Therefore, a good sealing capability is achieved by the contacts between the surfaces of the recesses and the edges of the seal band.

REFERENCES:
patent: 5241897 (1993-09-01), Drittel
patent: 5473971 (1995-12-01), Takeuchi et al.

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