Hazardous location expansion fitting

Details Hazardous location expansion fitting Hazardous location expansion fitting

1982-08-30

1985-12-10

Tolin, G. P.

Electricity: conductors and insulators

Conduits, cables or conductors

Combined

174 22R, 174 23R, 174 78, 285302, H02G 1508

Patent

active

045581738

ABSTRACT:
A fitting which couples two conduit members in a manner to permit relative longitudinal motion therebetween and which prevents the gases within the fitting from escaping at a temperature which might ignite an external ambient atmosphere. One form of the fitting includes a bushing affixed to an end of one of the conduit members and positioned and configured to mate with the interior of a body member affixed to an end of the other conduit member to permit sliding motion therebetween. The bushing has sufficient surface area in close proximity to the interior surface of the body member as to cause any gases passed between the bushing and body member to approach a temperature equilibrium with the body member.

REFERENCES:
patent: 2208558 (1940-07-01), Appleton
patent: 2312579 (1943-03-01), O'Brien
patent: 2835722 (1958-05-01), Appleton
patent: 2900436 (1959-08-01), Appleton
patent: 3093703 (1963-06-01), Zavertnik
patent: 3154632 (1964-10-01), Browne
patent: 3176064 (1965-03-01), Browne
patent: 3188382 (1965-06-01), Fuss
patent: 3783178 (1974-01-01), Philibert et al.
patent: 3974933 (1976-08-01), Toth et al.
patent: 4216349 (1980-08-01), Wium
patent: 4250350 (1981-02-01), Polimine

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