Secure mounting arrangement for U-shaped bolts and other device

Details Secure mounting arrangement for U-shaped bolts and other device Secure mounting arrangement for U-shaped bolts and other device

2008-07-22

2008-07-22

Campbell, Thor S. (Department: 3742)

Electric resistance heating devices

Heating devices

Convection space heater

C392S347000

Reexamination Certificate

active

07403702

ABSTRACT:
A U-shaped bolt including a closed end and two legs at an open end is self-retaining on a first object. The U-shaped bolt includes projections forming an opening to the closed end adapted to be smaller than the width of the first object. The projections retain the U-shaped bolts on the first object. The U-shaped bolt is used in conjunction with a space heater having a plurality of heating elements connected by channels. The U-shaped bolt is retained on the channels to warrant proper assembly of the space heater.

REFERENCES:
patent: 3386157 (1968-06-01), Jarvi
patent: 3771884 (1973-11-01), Williams
patent: 4147384 (1979-04-01), Heckethorn
patent: 4388749 (1983-06-01), Sassak
patent: 5244101 (1993-09-01), Palmer et al.
patent: 6948703 (2005-09-01), Alberson et al.
patent: 2003/0215305 (2003-11-01), Alberson et al.
patent: 2006/0076777 (2006-04-01), Pirrone
patent: 2007/0029460 (2007-02-01), Fitzler et al.

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