Sealing device for rodless pneumatic cylinders

Details Sealing device for rodless pneumatic cylinders Sealing device for rodless pneumatic cylinders

1989-06-02

1991-02-12

Look, Edward K.

Expansible chamber devices

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

277DIG7, F01B 2900

Patent

active

049914944

ABSTRACT:
A sealing device for a rodless pneumatic cylinder comprising a hollow body having an elongated chamber in which a reciprocating piston slides. The cylinder has a longitudinal slot and sealing means in the form of a flexible strip passing through a longitudinal passageway in the piston; the sealing strip has a width greater than that of the slot and longitudinally extending retaining bead members engaging and disengaging grooves inside the cylinder body, spaced apart from the central slot. The sealing strip also comprises sealing lips fitting against bevelled edges on a side of the retaining grooves. The strip is provided with a reinforcement to withstand the mechanical stresses caused by the reciprocating piston.

REFERENCES:
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patent: 4545290 (1985-10-01), Lieberman
patent: 4555980 (1985-12-01), Hoglund
patent: 4685383 (1987-08-01), Ruchser
patent: 4714007 (1987-12-01), Maisch
patent: 4733604 (1988-03-01), Lipinski
patent: 4829881 (1989-05-01), Taki et al.
patent: 4856415 (1989-08-01), Noda

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