F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/48, 121/80
F16J 9/20 (2006.01) F15B 15/08 (2006.01)
Patent
CA 1193923
ABSTRACT OF THE DISCLOSURE To provide for effective sealing of a movable piston in a cylinder formed with a longitudinal slit, a motion transfer element is coupled to the piston and extends through the slit. The transfer element is shaped in the form of a yoke extending over and around the outer surfaces of the cylinder tube to retain the portions of the tube separated by the slit The slit is sealed in the regions between the closed ends of the cylinder and the piston heads of the piston by a pair of separable and re-engageable plastic strips. The inner strip is formed with a projecting beaded rib fitting in a snap-in groove defined by two legs extending from the outer strip. Upon movement of the piston a wedge-shaped separating element separates the interengaged ridge- groove combination ahead of the movement, and a top pressing element coupled to the yoke re-seals the beaded rib in the groove at the trailing side to form sealed cylinder chambers and to retain the cylinder chambers in sealed con- dition upon movement of the piston, and with it the yoke and the separating wedge. The strips may be made to plastic to permit resilient deflection and engagement of the rib in the groove.
405103
Fetherstonhaugh & Co.
Proma Produkt- Und Marketing-Gesellschaft M.b.h.
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