Locks – Special application – For control and machine elements
Patent
1984-11-16
1985-11-19
Wolfe, Robert L.
Locks
Special application
For control and machine elements
70360, 70417, F16B 4100
Patent
active
045534152
ABSTRACT:
A locking device to be locked onto the kingpin of a trailer to prevent its being engaged by the fifth wheel of an unauthorized tractor. The locking device closely encircles the kingpin and houses within an aperture a locking bar that is adapted to be pressed into engagement with the kingpin recess or groove. The outer wall of the locking device casing has a protrusion in the area of the locking bar aperture such that the locking bar and the locking unit disposed therein are recessed within the aperture and thereby protected. The locking bar aperture from the outer end of the locking bar when in the locked position to the outer wall of the protrusion on the casing is counterbored beyond the transverse cross-section of the locking bar. Thus, if a careless driver attempts to couple a tractor to a trailer having a locking device in place, the locking mechanism will be protected and the abuse inflicted on the locking device in the area of the locking bar aperture will cause burring to the counterbored part of the aperture only. Such burring will not interfere with insertion or withdrawal of the locking bar.
REFERENCES:
patent: 2554306 (1951-05-01), Mack
patent: 2641124 (1953-06-01), Gallagher et al.
patent: 2755655 (1956-07-01), Maffey
patent: 2910860 (1959-11-01), Camba
patent: 3415085 (1968-12-01), Eble, Jr.
patent: 3600914 (1971-08-01), Johnson
patent: 3706211 (1972-12-01), Owen
patent: 3782146 (1974-01-01), Franke
patent: 3795123 (1974-03-01), Stiffel
patent: 3798938 (1974-03-01), McCullum
patent: 3913880 (1975-10-01), Lucasey
patent: 4031727 (1977-06-01), DeGroat et al.
patent: 4269048 (1981-05-01), McDorman
patent: 4418554 (1983-12-01), Wolfgang
Cannaday Richard L.
DeRosa Frank J.
Wolfe Robert L.
Yates Edwin T.
LandOfFree
Trailer kingpin locking device with protected locking bar apertu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trailer kingpin locking device with protected locking bar apertu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trailer kingpin locking device with protected locking bar apertu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-77693