Geometrical instruments
Patent
1978-03-23
1980-01-15
Lake, Roy
Geometrical instruments
339 10, 339 49R, 339177R, 285 68, H01R 304
Patent
active
041835999
ABSTRACT:
A coupling for air and electrical connections between a vehicle and a trailer having two telescopically connected cupped sections with concentric sealed air passages when the sections are interconnected. Both the electrical and pneumatic connections are made simultaneously with the telescopic interconnection.
REFERENCES:
patent: 3523266 (1970-08-01), Wetzig et al.
patent: 3673541 (1972-06-01), Volinskie
Jones DeWalden W.
Lake Roy
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