Patent US3797594A successfully refreshed from Google Patents.
US3797594A
Expired / Lapsed
US
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Trailer tongue weight scale
Assignee: Individual
•
Filing: 1973-07-20
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Granted: 1974-03-19
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Expires: 1993-07-20
Abstract
Abstract Apparatus carried by the tongue of a trailer to indicate the tongue weight load and thereby assist in distributing the weight of the cargo during the loading of the trailer to provide optimum conditions for the trailer and the propelling vehicle.
Inventors
- 👤 J Chaffee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:42
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/248; B60D1/58; G; G01; G01G; G01G19/00; G01G19/08; G01G19/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
69 words
Apparatus for measuring the dead weight load of a single axle trailer having a tongue, comprising a tongue support member mounted on the tongue of the trailer, a housing carried by said tongue support member between the trailer tongue and the ground, a fluid pressure cell carried by said housing, and gauge means communicating with said fluid pressure cell for registering the amount of pressure applied to said cell.
Claim 2
Dependent Claim
69 words
Apparatus for measuring the dead weight load of a single axle trailer having a tongue, comprising a tongue support member mounted on the tongue of the trailer, a housing carried by said tongue support member between the trailer tongue and the ground, a fluid pressure cell carried by said housing, and gauge means communicating with said fluid pressure cell for registering the amount of pressure applied to said cell.
Claim 3
Dependent Claim
37 words
The structure of claim 1 in which said housing includes upper and lower telescoping portions, means connecting said upper and lower portions to permit limited axial movement therebetween, said pressure cell being located within said telescoping housing.
Claim 4
Dependent Claim
31 words
The structure of claim 2 including sleeve means extending outwardly from said upper and lower portions of said housing, and means for connecting said sleeve means to said tongue support member.
Claim 5
Dependent Claim
174 words
In a single axle trailer having ground-engaging wheels, a tongue at one end of said trailer, means on said tongue for detachably connecting said trailer to a propelling vehicle, and a tongue support member supporting said tongue when the trailer is separated from the propelling vehicle; the improvement comprising apparatus for measuring the dead weight load applied to the tongue support member, said apparatus including a housing having an upper generally cylindrical portion and a lower generally cylindrical portion telescopically connected together, means for limiting the relative movement between said upper and lower portions, a pressure cell located within said housing, a hollow stem extending through said housing into said pressure cell, the outer end of said stem being disposed exteriorly of said housing, a pressure gauge mounted on the outer end of said stem and communicating with the interior of said pressure cell through said stem, and means for connecting said housing to the tongue support member of the trailer, whereby said pressure gauge indicates the dead weight load of said trailer tongue.
Claim 6
Dependent Claim
174 words
In a single axle trailer having ground-engaging wheels, a tongue at one end of said trailer, means on said tongue for detachably connecting said trailer to a propelling vehicle, and a tongue support member supporting said tongue when the trailer is separated from the propelling vehicle; the improvement comprising apparatus for measuring the dead weight load applied to the tongue support member, said apparatus including a housing having an upper generally cylindrical portion and a lower generally cylindrical portion telescopically connected together, means for limiting the relative movement between said upper and lower portions, a pressure cell located within said housing, a hollow stem extending through said housing into said pressure cell, the outer end of said stem being disposed exteriorly of said housing, a pressure gauge mounted on the outer end of said stem and communicating with the interior of said pressure cell through said stem, and means for connecting said housing to the tongue support member of the trailer, whereby said pressure gauge indicates the dead weight load of said trailer tongue.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |