Geometrical instruments
Patent
1979-08-17
1981-06-23
McQuade, John
Geometrical instruments
339130R, 339184R, H01R 1344
Patent
active
042746906
ABSTRACT:
A vehicle having a storage battery and a metal body panel has the body panel connected to one of the poles of the storage battery. There are two apertures in the body panel. One aperture receives a conducting bushing having a first head and stem with a relatively large bore therein. An insulating first sleeve extends through one aperture, slips over the stem and is in abutment with the head. An internal groove in the first sleeve adjacent the head receives an insulating washer retained by an inturned head rim. An insulating second washer slips over the stem, abuts the other side of the body panel from the head, and is clamped in place by a nut engaging the first stem. A conductor cable goes from that first stem to one pole of the storage battery and is held in place by a retaining nut. In the second aperture is a second stem having a smaller bore but otherwise similar in construction to the first stem. An insulating second sleeve slips over the second stem but does not enter the second aperture. The second sleeve retains an insulating third washer. A nut of conducting material is threaded onto the stem of the second bushing and abuts the metal body panel. An external conductor having a plug on one end of a large diameter to fit into the first bore also has on the other end a plug of a small diameter to fit into the second bore.
REFERENCES:
patent: 2654077 (1953-09-01), McLoad
patent: 2713670 (1955-07-01), Koch
patent: 2907976 (1959-10-01), Damon
patent: 3183476 (1965-05-01), Sacks et al.
patent: 3617986 (1971-11-01), Becker et al.
patent: 3813632 (1974-05-01), Drewry
patent: 3850501 (1974-11-01), Butterfield et al.
patent: 4146282 (1979-03-01), Gay
patent: 4174873 (1979-11-01), Hargett et al.
Hargett Jerry D.
Nash Alfred C.
McQuade John
N & H Manufacturing, Inc.
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