US3771892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile grade reference device for a paving machine
Assignee: Barber Greene Co
•
Filing: 1971-11-26
•
Granted: 1973-11-13
•
Expires: 1991-11-26
Abstract
Abstract Horizontally extending, articulated beams are connected to an asphalt paving machine adjacent one side thereof and extend longitudinally of the direction of travel of the paving machine. A grade reference stringline is mounted on the beams and is engaged by the sensor of screed control sensing means. A plurality of separate sub grade engaging skids are connected to the beams for supporting the latter; these skids are positioned longitudinally of the beams at randomly selected spacings. The skids are connected in pairs from sub beams, each of the latter being pivotally supported on its longitudinal midpoint.
Inventors
- 👤 J Munyon
- 👤 R Beaty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:58
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4833; E01C19/4853
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
90 words
A mobile grade reference device for a paving machine comprising: a. horizontally extending, articulated beam means arranged longitudinally of the direction of travel of said paving machine; b. grade reference means responsive to the position of said beam means and engaged by screed control sensing means on said paving machine; and c. at least four separate sub grade engaging support means connected to said beam means for supporting the latter, at least a majority of said support means being positioned longitudinally of said beam means at randomly selected unequal spacings.
Claim 2
Dependent Claim
90 words
A mobile grade reference device for a paving machine comprising: a. horizontally extending, articulated beam means arranged longitudinally of the direction of travel of said paving machine; b. grade reference means responsive to the position of said beam means and engaged by screed control sensing means on said paving machine; and c. at least four separate sub grade engaging support means connected to said beam means for supporting the latter, at least a majority of said support means being positioned longitudinally of said beam means at randomly selected unequal spacings.
Claim 3
Dependent Claim
55 words
The device according to claim 1 further defined by: a. said support means being connected in pairs from opposite ends of respective sub beams constituting a portion of said beam means; and b. pivot means pivotally mounting each sub beam at its longitudinal midpoint to respective other beams forming another portion of said beam means.
Claim 4
Dependent Claim
16 words
The device according to claim 2 wherein said beam means includes at least four sub beams.
Claim 5
Dependent Claim
97 words
The device according to claim 2 further defined by: a. said beam means including four of said sub beams; b. said other beams including a first beam having its opposite ends respectively engaged with two of said pivot means thereby being connected with the corresponding pair of sub beams; c. said other beams also including a second beam having its opposite ends respectively engaged with the other two of said pivot means thereby being connected with the corresponding pair of said sub beams; and d. said grade reference means being supported by said first and second beams.
Claim 6
Dependent Claim
25 words
The device according to claim 4 wherein each of said support means is constituted by a skid member pivotally connected to the associated sub beam.
Claim 7
Dependent Claim
16 words
The device according to claim 4 wherein said beam means is approximately 30 feet in length.
Claim 8
Dependent Claim
32 words
The device according to claim 1 wherein said beam means includes a plurality of beams pivotally engaged with said support means such that the latter exert equal influences on said sensing means.
Claim 9
Dependent Claim
19 words
The device according to claim 7 wherein each of said support means is constituted by a pivotally mounted skid.
Claim 10
Dependent Claim
106 words
A mobile grade reference device for a paving machine comprising: a. horizontally extending, articulated beam means arranged longitudinally of the direction of travel of said paving machine; b. grade reference means responsive to the position of said beam means and engaged by screed control sensing means on said paving machine; c. said beam means including a plurality of pivotally connected beams; and d. at least four separate sub grade engaging support means connected to said beams such that all of said support means exert equal influences on said sensing means, at least a majority of said support means being longitudinally positioned at randomly selected unequal spacings.
Claim 11
Dependent Claim
106 words
A mobile grade reference device for a paving machine comprising: a. horizontally extending, articulated beam means arranged longitudinally of the direction of travel of said paving machine; b. grade reference means responsive to the position of said beam means and engaged by screed control sensing means on said paving machine; c. said beam means including a plurality of pivotally connected beams; and d. at least four separate sub grade engaging support means connected to said beams such that all of said support means exert equal influences on said sensing means, at least a majority of said support means being longitudinally positioned at randomly selected unequal spacings.
Claim 12
Dependent Claim
25 words
The device according to claim 9 wherein said beam means includes four of said beams, each beam being connected to a pair of support means.
Claim 13
Dependent Claim
25 words
The device according to claim 9 wherein said beam means includes four of said beams, each beam being connected to a pair of support means.
Claim 14
Dependent Claim
72 words
The device according to claim 9 further defined by: a. said beam means including four of said beams; b. said beam means also including a first beam having its opposite ends respectively pivotally connected to the longitudinal midpoints of a pair of said beams; and c. said beam means further including a second beam having its opposite ends respectively pivotally connected to the longitudinal midpoints of the other pair of said beams.
Claim 15
Dependent Claim
16 words
The device according to claim 12 wherein said beam means is approximately thirty feet in length.
References Cited (Backward Citations)
DE4752C
Cited
FR846082A
Cited
FR1056865A
Cited
US2720716A
Cited
US3272099A
Cited
US3259034A
Cited
US3519770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |