Product category:
Knobs, Handles and Enclosure Hardware
News Release from: Protex Fasteners | Subject: Hinged extensions
Edited by the Engineeringtalk Editorial
Team on 03 August 2000
Hinged extensions overcome projections
Protex Fasteners Ltd of Redditch, one of the world's few specialist manufacturers of overcentre fasteners (draw latches), has launched a range of hinged extensions.
Protex Fasteners Ltd of Redditch, one of the world's few specialist manufacturers of overcentre fasteners (draw latches), has launched a range of hinged extensions Each consists of a Protex quick-action draw latch (lever-action, overcentre fastener) with an extension link in the form of a shaped bar or claw that incorporates two hinges
This article was originally published on Engineeringtalk on 16 May 2000 at 8.00am (UK)
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It will surmount an overhang, sill, ledge, hump or other protrusion and hook onto a catchplate beyond that point.
These devices are produced by Protex in stainless steel or zinc-plated, heat-treated carbon steel and with various finishes.
By comparison with other methods of passing over a projection, the principle of the hinged extension is a very useful - and indeed unique - method of hugging the full contours of that projection instead of clearing it or just bridging the gap.
The two integral hinges maintain the full freedom and efficiency of the overcentre action.
Such a system would not function overcentre if it did not have at least one hinge or if it consisted of a single piece.
In one really novel application, a row of five Protex hinged extensions hug an overhang in securing the opening side of a portable helicopter blade box.
This long but deceptively lightweight container, designed by Lucas Aerospace, was developed and manufactured for the Ministry of Defence by the Protex customer Cobham Composites Ltd of Shepshed, Leicestershire, a member of the Flight Refuelling group of companies.
Cobham Composites designs and makes highly specialised, tough and light, containers for all types of defence equipment.
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