Locking pins used with a locking system for a semitrailer slidin

Details Locking pins used with a locking system for a semitrailer slidin Locking pins used with a locking system for a semitrailer slidin

1995-03-22

1996-10-15

Dickson, Paul N.

Land vehicles

Wheeled

Articulated vehicle

2801492, 180209, B62D 5306

Patent

active

055647278

ABSTRACT:
Improved locking pins and parallel rails used with a locking pin system mounted on a sliding undercarriage of a semitrailer. The locking pin system used for securing and releasing a sliding undercarriage from a pair of the parallel rails mounted on an underside of the semitrailer. The parallel rails have spaced apart locking pin holes. The rails are designed to withstand dynamic loads placed thereon when the pins are extended against the rails prior to being received in the next available pin holes. The new locking pins are integrally formed in a one piece construction and are substantial cylindrical in shape. Each pin is characterized by having a flat circular insertion end with a pin hole entry collar. The pin hole entry collar is circular having a diameter in a range of one half to three quarters of the diameter of the locking pin hole. From the pin hole entry collar and extending rearwardly is an outwardly tapered center portion connected to a pin hole seating collar. The pin hole seating collar is circular having a diameter of slightly less than the diameter of the locking pin hole for tight seating in the pin hole. The pin hole seating collar is disposed next to a spring retaining ring. From the spring retaining ring extends a pin shank. By design, the new locking pins provide for greater time in order to advance into newly selected locking pin holes when changing the position of the sliding undercarriage on the semitrailer.

REFERENCES:
patent: 3778079 (1973-12-01), Vornberger et al.
patent: 4353565 (1982-10-01), Smith et al.
patent: 4838566 (1989-06-01), Baxter et al.

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