Resources Contact Us Home
Fifth wheel trailer hitch coupling unit

Image Number 8 for United States Patent #7581746.

A trailer hitch coupling unit has a hitch pin assembly mounted on a trailer and a hitch receiver assembly mounted on a vehicle. The hitch pin assembly has a mounting plate and a platform forming a ball and socket joint therebetween, rotatably coupling the platform to the mounting plate. A bull nose, having a groove, projects from the bed plate. A first electrical connector is mounted in an axially extending bore in the bull nose. The hitch receiver assembly has a bed plate configured to be mounted on a bed of the vehicle above a rear axle thereof. The bed plate has a first opening configured to receive the bull nose. A locking plate is mounted on the bed plate for axial movement between a hitch pin receiving position adjacent the bed plate, and a hitch locking position spaced from the bed plate. The locking plate has a second opening configured to receive the bull nose. An actuator is operably connected to the locking plate for effecting the axial movement. A locking mechanism has at least two locking arms mounted about the second opening and pivot between a locked position and an unlocked position and are biased to the locked position, enabling ingress of the bull nose and preventing egress once the locking arms engage the groove on the bull nose. A lock release mechanism is operably connected to the locking arms to effect unlocking movement of the locking arms and enabling egress of the bull nose. A second electrical connector is pivotally mounted on the locking plate and positioned to electrically couple with the first electrical connector upon the locking plate moving to the hitch locking position.

  Recently Added Patents
Liquid crystal display device
Method for radiation sterilization of medical devices
Machine shop including computer system that interfaces with different legacy servers
Systems and methods for sorting particles
Data output apparatus and data output method
Accessory sleeve
Catheter with multiple electrode assemblies for use at or near tubular regions of the heart
  Randomly Featured Patents
Plate-type mounting base
Conductive (electrical, ionic, and photoelectric) polymer membrane articles, and method for producing same
Low power multiplier for CPU and DSP
Elimination of sticking of micro-mechanical devices
Optical module
Simultaneous contact duplication of a plurality of magnetic copy tapes from a single magnetic master tape
Motor vehicle fuel-waste indicator
Androgenic steroid compounds and a method of making and using the same
Minimization of pressure drop variation in flow controllers
Coke drum inlet line alignment device