Adjustable fifth wheel hitch

B - Operations – Transporting – 62 – D

Patent

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Details

B62D 53/08 (2006.01)

Patent

CA 2205011

An adjustable fifth wheel hitch (10) includes a support frame (12) having base rails (14) that are secured to the frame of a vehicle and a pair of spaced guide rails (16) that bridge between the base rails (14). The fifth wheel hitch (10) also includes a head assembly (28) having a jaw assembly (30)for engaging a kingpin on a trailer. A head support (48) and a pair of uprights (34) mount the head assembly (28) for relative fore-and-aft sliding movement along the guide rails (16) between a towing position and a maneuvering position. A releasable lock (50) secures the head assembly (28) in either selected position. The lock (50) includes a dual bar latch (52) and a leaf spring (70) for biasing the latch (52) into a locking position. The dual bars of the latch are offset or dimensioned so that each bar is selectively received in only one of two similarly offset or dimensioned, cooperating apertures (66) formed in one of the guide rails (16).

L'invention porte sur un dispositif d'attelage réglable (10) comportant un cadre support (12) possédant des rails (14) en formant la base et solidaires du châssis d'un véhicule et une paire de rails de guidage séparés (16) formant un pont entre les rails (14) de la base. Le dispositif d'attelage (10) comporte également une tête (28) présentant une mâchoire (30) destinée à recevoir l'axe d'attelage d'une remorque. La tête (28) repose sur un support (48) et sur une paire de montants verticaux, ce qui lui permet de coulisser d'avant en arrière sur les rails de guidage (16) entre une position de remorquage et une position de manoeuvre. Un verrou (50) bloque la tête (28) dans l'une de ses positions. Le verrou (50) comporte un loquet double barre (52) et un ressort à lames (70) poussant le loquet (52) en position de blocage. Les deux barres du loquet sont décalées ou dimensionnées de manière à ce qu'une seule d'entre elles puisse pénétrer dans une seule de deux ouvertures (66) correspondantes identiquement décalées ou dimensionnées pratiquées dans l'un des rails de guidage (16).

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