Diaphragm seal

Details Diaphragm seal Diaphragm seal

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 3/02 (2006.01) F16J 15/36 (2006.01)

Patent

CA 2233772

A mechanical duty rubber diaphragm for use as a high speed dynamic seal is provided which overcomes the bending fatigue failure common to conventional rubber diaphragms. A comparatively thick rubber diaphragm of hollow conical shape is employed which has metal hoops bonded to outer and inner diameters. Upon the diaphragm being reciprocated along a central axis the hoops hold the rubber in true shear without bending and thus preclude the propagation of unavoidable minute cracks or discontinuities in the rubber into large tears, the common fatigue failure mode in rubber diaphragms.

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