Patent US4492490A successfully refreshed from Google Patents.
US4492490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road repair spreader
Assignee: Individual
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Filing: 1982-06-25
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Granted: 1985-01-08
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Expires: 2002-06-25
Abstract
Abstract The invention comprises a device which automatically spreads road repair material over a pothole or crack in a road. The device has a spreader which is attached to the rear of a moving vehicle, such as a dump truck, which optionally has a quantity of road repair material stored therein. The repair material is deposited on the road surface either in the crack or pothole or immediately behind it. The spreader then passes over the hole and either smoothes the repair or fills the hold by carrying the repair material into the hole and simultaneously smoothes it over. The device has adjustment means whereby the spreader can conform to the contour or grade of the road to aid in the smoothing process. Use of the device eliminates the manual labor involved in making a road repair, and also accomplishes the repair quicker than has heretofore been possible.
Inventors
- 👤 David R. Christine
- 👤 John F. Terry, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:40
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/18; E01C19/185; E01C23/00; E01C23/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A road repair spreader, comprising: a frame adapted for attachment to a vehicle; first and second sleeves affixed to said frame in spaced-apart relationship to each other; a mold board; first and second shafts having first ends thereof respectively slidingly received by said first and second sleeves and second ends thereof pivotally connected to said mold board; and wherein said shafts pass through brackets on said mold board, said brackets restricting pivotal movement of said shafts.
Claim 2
Dependent Claim
76 words
A road repair spreader, comprising: a frame adapted for attachment to a vehicle; first and second sleeves affixed to said frame in spaced-apart relationship to each other; a mold board; first and second shafts having first ends thereof respectively slidingly received by said first and second sleeves and second ends thereof pivotally connected to said mold board; and wherein said shafts pass through brackets on said mold board, said brackets restricting pivotal movement of said shafts.
Claim 3
Dependent Claim
22 words
The road repair spreader according to claim 1 wherein said frame receives a tray along an area of a bottom portion thereof.
Claim 4
Dependent Claim
32 words
The road repair spreader according to claim 1 which further includes locking means associated with each said sleeve for selectively securing said shafts in their associated sleeves and preventing sliding action therebetween.
Claim 5
Dependent Claim
20 words
The road repair spreader according to claim 3 wherein said locking means comprises a setscrew received by each said sleeve.
Claim 6
Dependent Claim
53 words
A road repair spreader according to claim 1, wherein said mold board is planar and is tilted forward in the direction of movement of said vehicle at an angle of between 0° and 20° from the perpendicular to the road surface; and wherein said mold board has an end flap at either extremity.
Claim 7
Dependent Claim
23 words
The road repair spreader according to claim 5 wherein said flaps form an angle with said mold board of between 20° and 45°.
Claim 8
Dependent Claim
44 words
A road repair spreader according to claim 1, which further includes means for pivotal securement of said frame to the rear of said vehicle, comprising a pair of brackets each having a pin which passes through the bracket and a brace on said frame.
Claim 9
Dependent Claim
102 words
A road repair spreader according to claim 1, wherein said spreader includes a fulcrum pin secured to said frame; a lever rod which pivots on said fulcrum pin; a variable length lift rod pivotally secured at one end to said lever rod and at the other end to said mold board; and a retaining hook attached to said frame; wherein a downward force applied to the free end of said lever rod causes said lift rod to raise said mold board from the road surface; and wherein said free end of said lever rod may be releasably secured on said retaining hook.
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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) | 1988-01-08 | 1988-07-09 | 1989-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-08 | 1992-07-09 | 1993-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-08 | 1996-07-09 | 1997-01-08 | $7700.00 | Window Closed / Lapsed |