Air exhausting cap structure

Details Air exhausting cap structure Air exhausting cap structure

1995-12-27

1997-07-22

Joyce, Harold

Ventilation

Having inlet airway

Including specific cover or shield for exterior vent opening

174 161, 174 17VA, 220374, 2203671, F24F 700

Patent

active

056498594

ABSTRACT:
A circumference wall is provided on a slant surface of a case. A cylindrical portion with a through hole for communicating the inside of the case to the outside is protruded inside the circumference wall. A shaft loosely fitted into the through hole is vertically provided from a reversely recessed cap. A falling out preventing portion for preventing the shaft from falling out the through hole is formed at the lower end of the shaft while a gap to the rear surface of the upper plate is secured. A communicating hole communicating with the gap between the shaft and the through hole when the falling out preventing portion is closely brought into contact with the rear surface of the upper plate, is provided on the falling out preventing portion. An outer circumference wall covered on the outside of the circumference wall and disposed to form a gap to the slant surface is vertically provided on the cap.

REFERENCES:
patent: 2644610 (1953-07-01), Work
patent: 3454182 (1969-07-01), Morton
patent: 5549082 (1996-08-01), Kobayashi
patent: 5558244 (1996-09-01), Akaike et al.

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