Twist lock fixture attachment system

A twist lock attachment system for attaching a fixture having a sheet metal mounting plate that is part of a sheet metal housing to a structural support. The exemplary fixture disclosed is a lighting fixture attached to a wiring conduit. The mounting plate has a generally circular mounting aperture....

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	BELKNAP LEE J
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A twist lock attachment system for attaching a fixture having a sheet metal mounting plate that is part of a sheet metal housing to a structural support. The exemplary fixture disclosed is a lighting fixture attached to a wiring conduit. The mounting plate has a generally circular mounting aperture. A twist lock bushing includes a tubular body correspondingly generally circular in cross section. The mounting plate and the twist lock bushing releasably engage each other by relative movement to insert the tubular body into the mounting aperture with the mounting plate and the bushing angularly oriented in an insertion and removal position with reference to each other, followed by rotation of the mounting plate and the twist lock bushing relative to each other to an installed position.