Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1986-06-16
1988-03-29
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
138 89, 138178, F16J 1502, F16L 900
Patent
active
047338725
ABSTRACT:
A temperature responsive fusible packing is inserted in a ring shaped space defined between the lower face of a bolt head and the bottom face of a recessed portion formed on the supply port of a gas chamber of an accumulator and then the bolt is tightened, so that the fusible packing can act as a packing which blocks both the gas passage and the inner passage formed through the shank of the bolt. In the event where, the temperature responsive fusible packing should melt due to a fire or the like, since the thus fused packing is expelled outside the device through a gap formed between the wall face of the recessed portion and the outer periphery of the bolt head, a vacant space would be formed there to expose the inner passage to an open air and allows the gas in the gas chamber to be discharged outside.
REFERENCES:
patent: 2635718 (1953-04-01), Birkemeier
patent: 3525366 (1970-08-01), De Frees
patent: 4552222 (1985-11-01), Goans et al.
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