US 4,056,155 A · Portable trailer tongue weight scale

Abstract

A portable scale is provided, to be used in conjunction with the jack tube on a trailer hitch, to provide trailer tongue weight. The tongue weight scale is constructed to accept the trailer tongue support and guide it directly onto a weighing device. The scale is formed with an elongated housing surrounding the jack tube guide and a weighing device. The jack tube guide receives the trailer jack tube and guides it onto the weighing device. The jack tube guide is formed to have an inner dimension just slightly larger than the outer dimension of the jack tube so that during a weighing operation when a load is applied from the jack tube to the weighing device, the jack tube guide sleeve functions to maintain alignment and keep the scale and jack tube together. A scale, disposed on the outside of the elongated housing, operates in conjunction with an indicator connected to the weighing device, to provide a visual indication of the trailer tongue weight.

Claims7

Dependent claims

A portable scale for receiving the jack tube of a trailer tongue to provide trailer tongue load weight comprising:

a cylindrical tubular housing having a closed end and an open end which receives the jack tube of a trailer tongue;
a weight sensitive device disposed within said tubular housing and being recessed from the open end of said tubular housing;
a sleeve secured to the inner diameter of said housing and extending between the open end of said housing and said weight sensitive device;
a weight scale disposed on the outside circumference of said tubular housing;
and,
indicator means connected to said weight sensitive device for movement relative to said weight scale whereby the applied load weight is indicated.

3 more elements

Dependencies are inferred from the claim text.

Portable trailer tongue weight scale

Life of this patent

Portable trailer tongue weight scale

Life of this patent

Abstract

Claims7