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US3622173A Expired / Lapsed US ⏱️ 0.0 years remaining

Full trailer fifth wheel with grease reservoir

Assignee: Individual
•
Filing: 1969-10-29
•
Granted: 1971-11-23
•
Expires: 1989-10-29
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Abstract

Abstract A pair of annular plates for securement to a full trailer frame and the front axle bolster of the frame and including opposing concentric circular grooves and ridges. The ridges formed on one of the plates are nested in the grooves of the other plate and retaining structure is provided for preventing axial separation of the plates. In addition, the bottom surfaces of each of the grooves have circumferentially spaced recesses or relieved areas formed therein and the upper faces of the ridges are also provided with similar circumferentially spaced recesses or relieved areas. The relieved areas in the grooves and ridges are spaced relative to each other in a manner such that they are out of registry when the steerable front wheels of the trailer are positioned in straight-ahead positions and the plates include lubricating passages through which lubricating material may be forced between the opposing axially facing surfaces of the grooves and ridges.

Inventors

  • 👤 Donald W Hodgson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 00:36
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0885

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 154 words
In combination, first and second rotatable members, first and second plates secured to said first and second members said plates including means defining concentric circular ridges and grooves including generally annular and planar top and bottom surfaces, respectively, said plates being disposed in superposed relation with said ridges snugly received and seated in said grooves, at least some of said annular surfaces including narrow circumferential grooves formed therein, and means for admitting lubricating fluids into said grooves from the exterior of said plates, and means releasably securing said plates together against separation, one of said plates being annular in configuration, the last mentioned means including a retaining ring extending about one of the peripheral edges of said one plate and including portions thereof overlying the surfaces of said one plate remote from the other plate and extending about said one peripheral edge, and means removably securing said ring to the other of said plates.
Claim 2
Dependent Claim 154 words
In combination, first and second rotatable members, first and second plates secured to said first and second members said plates including means defining concentric circular ridges and grooves including generally annular and planar top and bottom surfaces, respectively, said plates being disposed in superposed relation with said ridges snugly received and seated in said grooves, at least some of said annular surfaces including narrow circumferential grooves formed therein, and means for admitting lubricating fluids into said grooves from the exterior of said plates, and means releasably securing said plates together against separation, one of said plates being annular in configuration, the last mentioned means including a retaining ring extending about one of the peripheral edges of said one plate and including portions thereof overlying the surfaces of said one plate remote from the other plate and extending about said one peripheral edge, and means removably securing said ring to the other of said plates.
Claim 3
Dependent Claim 32 words
The combination of claim 1 wherein the plate opposing the plate having the largest diameter ridge includes a peripherally extending circular flange embracing the radial outermost surfaces of the largest diameter ridge.
Claim 4
Dependent Claim 20 words
The combination of claim 1 wherein said one peripheral edge of said one plate comprises the inner peripheral edge thereof.
Claim 5
Dependent Claim 24 words
The combination of claim 3 wherein said some of said annular surfaces include relieved areas spaced circumferentially thereabout into which said narrow grooves open.
Claim 6
Dependent Claim 18 words
The combination of claim 4 wherein said relieved areas extend the full width of said some annular surfaces.

References Cited (Backward Citations)

US614629A Cited
US937657A Cited
US2285784A Cited
US2481695A Cited
US3075816A Cited
US3096099A Cited
US3325185A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-11-22 1975-05-24 1975-11-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-11-22 1979-05-24 1979-11-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-11-22 1983-05-24 1983-11-23 $7700.00 Window Closed / Lapsed

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