B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
190/15.03, 190/7
B65D 45/24 (2006.01) F16J 13/18 (2006.01) F16J 13/20 (2006.01) F16J 13/24 (2006.01)
Patent
CA 1138792
SAFETY HATCH COVER APPARATUS ABSTRACT OF THE DISCLOSURE Discloses is a safety hatch cover apparatus illus- trated as used on a tank of a tank-carrying vehicle such as a gasoline truck. The apparatus comprises a base member attached to the tank and having an opening adapted to be closed by a hatch cover hinged to the base member. The hatch cover carries a latch bar rotatable about an axis perpendicu- lar to the base member and adapted to engage keeper members fixed to the base member adjacent the hatch opening. The latch bar carries a cam which turns with the longitudinal axis of the latch bar and engages biasing means carried by the cover. The biasing means, cam, latch bar and keeper members cooperate to close the cover yet permit the cover to lift in case of excess gas pressure in the tank. The appara- tus also includes safety means adapted to engage the latch bar to restrain it from moving from its position in which it engages the keeper members, whether or not the cam is turned to cause the latch bar to be in locked position.
368154
Emco Wheaton Inc.
Smart & Biggar
LandOfFree
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