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Title: Retaining latch for a water pit gate

The present invention relates to retaining devices which are used to latch two elements or parts together and, more particularly, to gate latches for use in locking a gate to a wall bracket in a water pit utilized to store or handle hazardous materials. A retaining latch is provided comprising a latch plate which is rotatably mounted to each end of the top of the gate and a recessed opening, formed in the gate frame, for engaging an edge of the latch plate. The latch plate is circular in profile with one side cut away or flat, such that the latch plate is D-shaped. The remaining circular edge of the latch plate comprises steps of successively reduced thickness. The stepped edge of the latch plate fits inside a recessed opening formed in the gate frame. As the latch plate is rotated, alternate steps of the latch plate are engaged by the recessed opening. When the latch plate is rotated such that the flat portion of the latch plate faces the recessed opening in the gate frame, there is no connection between the opening and the latch plate and the gate is unlatched from the gate frame.
Authors:
Publication Date:
OSTI Identifier:
663424
Report Number(s):
PATENTS-US--A8694576
ON: DE98007402; PAN: US patent application 8-694,576; TRN: AHC29818%%261
DOE Contract Number:
AC11-89PN38014
Resource Type:
Patent Application
Resource Relation:
Other Information: PBD: 1996
Research Org:
Bettis Atomic Power Lab., West Mifflin, PA (United States)
Sponsoring Org:
USDOE Assistant Secretary for Nuclear Energy, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; DESIGN; FASTENERS; OPENINGS; STORAGE FACILITIES; RADIOACTIVE MATERIALS; HAZARDOUS MATERIALS; STORAGE