Accession Number : ADD018007

Title :   Safety Latch,

Descriptive Note : Patent, Filed 30 Sep 94, patented 6 Feb 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Schneider, William E

Report Date : 06 Feb 1996

Pagination or Media Count : 5

Abstract : A safety latch for securing a cover on a machine integrating a safety switch with a latching swing bolt. The swing bolt for securing the cover pivots between a latched position and an unlatched position. The switch for energizing and de-energizing the machine is switchable between a closed position and an open position. An interlock flag must be moved to a predetermined position before the latch can be released. Moving the flag to the predetermined position causes the safety switch to open, dc-energizing the machine. A portion of the swing bolt obstructs the interlock flag from closing the switch, thus preventing the machine from being energized when the cover is unlatched. The swing bolt is preferably threaded and a nut is provided to clamp the threaded swing bolt in the latched position and secure the cover. A shoulder of the interlock flag prevents the nut from being loosened unless the interlock flag is moved to the predetermined position in which the machine is de-energized.

Descriptors :   *SAFETY, *BOLTS, *PATENTS, *LATCHES, *SMALL TOOLS, POSITION(LOCATION), CLOSURES, INSTALLATION, SWITCHES, SCREW THREADS

Subject Categories : Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE