| 摘要 |
A weight-indicating trailer coupler for visually indicating actual tongue weight or tongue load of a trailer which is applied to a tow car hitch, during loading, after loading, or after rearranging a load, for the purpose of insuring safe towing through application of adequate weight on the tongue and tow car hitch ball. Actual tongue weight may be read off of a calibrated scale. The coupler consists of two pivotally engaged portions, one of which is attached to a trailer tongue, and the other portion being pivotable with respect to the first portion, against the action of a predetermined strength spring means interposed therebetween, to indicate tongue load visually on a scale.
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