US3843149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot dip galvanized torsion bar suspension system
Assignee: FLOAT-ON Corp A CORP OF FL
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Filing: 1973-05-07
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Granted: 1974-10-22
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Expires: 1993-05-07
Abstract
Abstract A method and means of hot dip galvanizing completely assembled and machined trailer wheel suspension systems as a unit, without affecting machined wheel spindle surfaces, is described. Spindle protective sleeve caps having an interior nut operative to be screw-threaded on the wheel retainer nut threading at the outer end of a wheel spindle enables force-fitting the inner end of the sleeve cap in sealing relation against the suspension arm hub which carries the spindle, so as to completely cover and seal the spindle during unitary hot dip galvanizing of the suspension system.
Inventors
- 👤 W Whitley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
B; B60; B60B; B60B35/00; B60B35/02; B60B35/08; C; C23; C23C; C23C2/00; C23C2/006; C23C2/0062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A torsion bar suspension system for trailer wheels and the like comprising, in combination, a metal supporting framework adapted to be secured to the undercarriage of a trailer, a pair of spaced, parallel, torsion bars longitudinally-fitted and secured with respect to said supporting framework, said torsion bars each having end portions extending outwardly at each end of said supporting framework, a first pair of laterally-opposed moment arm members secured to one end each of one of said pair of torsion bars, a second pair of laterally-opposed moment arms secured to one end each of said other of said pair of torsion bars, the outer ends of each of said moment arms being formed with hub portions, a spindle extending outwardly of each of said hub portions and being intergrally formed therewith and extending outwardly of each end of said metal supporting framework, said spindles being machine-finished and said torsion bar suspension system being hot dip galvanized over all exterior surfaces except the machined surface areas of said spindles.
Claim 2
Dependent Claim
168 words
A torsion bar suspension system for trailer wheels and the like comprising, in combination, a metal supporting framework adapted to be secured to the undercarriage of a trailer, a pair of spaced, parallel, torsion bars longitudinally-fitted and secured with respect to said supporting framework, said torsion bars each having end portions extending outwardly at each end of said supporting framework, a first pair of laterally-opposed moment arm members secured to one end each of one of said pair of torsion bars, a second pair of laterally-opposed moment arms secured to one end each of said other of said pair of torsion bars, the outer ends of each of said moment arms being formed with hub portions, a spindle extending outwardly of each of said hub portions and being intergrally formed therewith and extending outwardly of each end of said metal supporting framework, said spindles being machine-finished and said torsion bar suspension system being hot dip galvanized over all exterior surfaces except the machined surface areas of said spindles.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |