Patent US5066035A successfully refreshed from Google Patents.
US5066035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer bearing plate for fifth wheel
Assignee: Individual
•
Filing: 1990-04-18
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Granted: 1991-11-19
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Expires: 2010-04-18
Abstract
Abstract An assembly for coupling a tractor to a trailer comprising a fifth wheel bearing plate and a trailer bearing plate assembly. The trailer bearing plate assembly includes a ring having a collar and is adapted to securely attach to an underside of the trailer. The trailer bearing plate further includes a disk disposed between the collar and the trailer underside.
Inventors
- 👤 Leonidas Athans
- 👤 George C. Athans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:19
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0842
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
An assembly for coupling a truck tractor to a semi-trailer, the assembly comprising: an upwardly facing tractor bearing plate; and a trailer bearing plate assembly adapted to securely attach to an underside of said trailer, said trailer bearing plate assembly including a downwardly facing disk for engagement with said upwardly facing tractor bearing plate and having a peripheral flanged edge, said trailer bearing plate assembly further including a ring secured to an underside of said trailer, said ring having an inwardly directed collar retainingly extending only about said disk peripheral flanged edge to permit said tractor bearing plate to rotate independent of said ring.
Claim 2
Dependent Claim
104 words
An assembly for coupling a truck tractor to a semi-trailer, the assembly comprising: an upwardly facing tractor bearing plate; and a trailer bearing plate assembly adapted to securely attach to an underside of said trailer, said trailer bearing plate assembly including a downwardly facing disk for engagement with said upwardly facing tractor bearing plate and having a peripheral flanged edge, said trailer bearing plate assembly further including a ring secured to an underside of said trailer, said ring having an inwardly directed collar retainingly extending only about said disk peripheral flanged edge to permit said tractor bearing plate to rotate independent of said ring.
Claim 3
Dependent Claim
18 words
The assembly of claim 1 including a layer of grease disposed between said disk and said trailer underside.
Claim 4
Dependent Claim
24 words
The assembly of claim 1 wherein said disk includes a grease fitting for permitting introduction of grease between said disk and said trailer underside.
Claim 5
Dependent Claim
12 words
The assembly of claim 1 wherein said disk is formed of plastic.
Claim 6
Dependent Claim
14 words
The assembly of claim 4 wherein said plastic has a low coefficient of friction.
Claim 7
Dependent Claim
15 words
The assembly of claim 5 wherein said plastic includes a high molecular weight poly ethylene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |