E - Fixed Constructions
05
F
E05F 3/12 (2006.01) F16K 15/02 (2006.01) F16K 27/02 (2006.01)
Patent
CA 2528762
The invention uses the valve body to form a sealing surface against the body of the door closer piston without any separate gasket part. In order to make this possible, the valve body must be made of a material suitable for the purpose while simultaneously fulfilling the normal characteristics required of the valve body. A suitable material is plastic.
Abloy Oy
Kirby Eades Gale Baker
LandOfFree
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