Emergency shut-off switch with hinged coverdoi:USD514528 S1US
1280921 Fire operated # ventilators R J LYONS 19 March 1970 [30 June 1969] 13186/ 70 Heading A5A [Also in Divisions E2 and F4] An emergency-releasable hold-down mechanism for a roof hatch cover compri
A nuclear reactor vessel for containing coolant and/or moderator fluid under high pressure and having an emergency shutoff valve mounted adjacent each of its fluid inlet and outlet openings, each valve being arranged to automatically close its associated opening in the event of rupture of the ...
for commercial vehicle or motor coach roof, has hinged connection at one end and unlocking handle at opposite end. Hatch cover includes frame (3) fitted to rim of roof opening (2). Frame front is connected with hinge (4) to vehicle roof (1). The frame rear includes locking handle (5)...
[Also in Divisions E2 and F4] An emergency-releasable hold-down mechanism for a roof hatch cover comprises a slide ring on the short leg of a crook-shaped bar 32 attached at the far end of its longer leg by emergency-releasible means to the underside of the cover, which is maintained ...