Darrel J Burns

US Patent:

8419038, Apr 16, 2013

Filed:

Jul 8, 2011

Appl. No.:

13/135578

Inventors:

Darrel J. Burns - Park City UT, US
Brigitte Paula Strecker Burns - Park City UT, US

International Classification:

B62D 53/08

US Classification:

2804412, 280496, 280495, 280498, 2804171, 280507, 280901

Abstract:

A fifth wheel trailer hitch with locking mechanism that includes a pin that extends axially from a pivotal mounting of a platform of a trailer tow bar. The pin is preferably cylindrical and is grooved circumferentially adjacent to its bottom end for fitting into an a key way forward end lip formed in a mounting plate that is attached to a truck bed for prohibiting the pin from lifting from the key way. The pin includes a plug that, by turning a cam rod journaled through the pin, will extend or retract axially from a pin center opening to fit into a plug hole formed in the mounting plate in the center of the key way forward end, preventing, when extended, the pin from sliding therefrom. Which plug, extended by cam rod turning, is a primary lock, and the invention further includes straight rods, as secondary plug locks, arranged for travel through lateral holes in the pin into the pin open center to fit into holes in the plug side when the plug is extended by the primary lock, and further includes as a safety lock, a plate that is fitted into the key way depression to brace the pin in the key way forward end.

US Patent:

50589156, Oct 22, 1991

Filed:

Sep 7, 1990

Appl. No.:

7/580173

Inventors:

Darrel J. Burns - Park City UT

International Classification:

B60D 101

US Classification:

2804412

Abstract:

A trailer hitch including a pin that extends axially from a pivotal mounting by a universal joint of a rocking or tilting platform of a trailer draw or towbar. The pin is preferably cylindrical and is grooved circumferentially for fitting into a wide head end of a keyhole or keyway slot formed in a mounting plate attached to a truck bed. The keyway forward circular end includes a flange therearound that fits into the cylindrical pin groove, prohibiting the pin from lifting from the keyway. To complete the locking of the pin to mounting plate, either the pin includes a plug for extending axially into a hole formed in the mounting plate in the center of the keyway forward end, or a brace plate is installed in a keyway large rearward end, resting against the pin prohibiting the pin for being slid therefrom. Which plug is extended or withdrawn by turning a locking or camming rod journaled across the pin, which locking or camming rod is spring biased to a plug extended attitude.