F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/38
F16J 15/32 (2006.01)
Patent
CA 1058651
ABSTRACT OF THE DISCLOSURE A one-piece piston rod wiping seal member for cleaning reciprocating piston rods or plungers as the rod moves into the cylinder chamber for cleaning dust and other foreign matter from the surface of the rod to present the foreign matter from en- tering the working chamber and contaminating the interior there- of. The wiping seal member is of one-piece construction and - includes an endless body portion of elastomeric material with a pair of lips projecting axially and radially with respect to an end wall of the body member. One of the lips is a rod en- gaging lip and projects radially inwardly to engage the sur- face of a piston rod. The other lip is a cylinder end cap en- gaging the lip for engaging the end cap of the cylinder. The body portion can be snap fitted into a groove in the end cap of the cylinder. When installed, clearances are provided be- tween the surfaces of the mounting groove of the end cap and the surface of the body portion of the seal member to prevent over stressing of the wiping lips upon lateral movement of the piston rod.
271261
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