F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/48
F16J 15/34 (2006.01)
Patent
CA 1267170
SHAFT SEAL CONSTRUCTION FOR BIN LEVEL INDICATORS ABSTRACT OF THE DISCLOSURE The shaft seal construction is employed in a bin level indicator between the housing and the rotatable shaft thereof. The housing has an enlarged bore therein concentric with the shaft. A composite pressure sealing ring is disposed in sealing relation between the shaft and the bore. Such ring has a rubber-like pressure sealing ring member facing forwardly and a metal backing ring member behind the rubber-like ring member and preferably bonded thereto. The rubber-like ring member has a peripheral surface in sealing engagement with the bore, and a forwardly projecting annular sealing lip in rotary sealing engagement with the shaft. The metal backing ring member has a peripheral surface compressibly engaging the bore with an interference fit therebetween. A rubber- like vacuum sealing ring is disposed behind the metal backing ring member and is provided with a first frusto-conical sealing lip, engaging the backing ring member, and a second annular sealing lip in sealing engagement with the shaft.
505514
Jett Richard G.
Ludlow Industries Inc.
Monitor Manufacturing Inc.
Smart & Biggar
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