US3602112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete-paving machines
Assignee: ROBERT MC GREGOR AND SONS Ltd
•
Filing: 1969-09-10
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Granted: 1971-08-31
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Expires: 1989-09-10
Abstract
Abstract A concrete-paving machine of the kind embodying a conforming plate which, as the machine advances, levels plastic concrete preplaced in front of the machine, has the conforming plate mounted for controlled lateral displacement on the machine so providing supplementary control over its path of travel independent of the machine''s steered course.
Inventors
- 👤 Albert E Burks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:26
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4833; E01C19/4853; E01C19/486; E01C19/22; E01C19/42
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
A concrete-paving machine for placing plastic concrete material along a longitudinal path comprising a main support frame movable along said path, a transverse conforming plate connected to said main frame and extending across said longitudinal path, said plate being adjustably mounted on said main frame for controlled lateral displacement across said longitudinal path and being operable as said machine advances along said path to level plastic concrete material which is placed in front of the advancing machine.
Claim 2
Dependent Claim
77 words
A concrete-paving machine for placing plastic concrete material along a longitudinal path comprising a main support frame movable along said path, a transverse conforming plate connected to said main frame and extending across said longitudinal path, said plate being adjustably mounted on said main frame for controlled lateral displacement across said longitudinal path and being operable as said machine advances along said path to level plastic concrete material which is placed in front of the advancing machine.
Claim 3
Dependent Claim
38 words
A paving machine as claimed in claim 1, wherein the conforming plate is suspended on sets of arms which are pivotally attached to the main frame for swinging movemeNt transversely of the main frame across the longitudinal path.
Claim 4
Dependent Claim
15 words
A paving machine as claimed in claim 2, wherein the swinging arms are vertically disposed.
Claim 5
Dependent Claim
21 words
A paving machine as claimed in claim 2, wherein the swinging arms are horizontally disposed or are inclined to the horizontal.
Claim 6
Dependent Claim
35 words
A paving machine as claimed in claim 2 including guiding means on the main frame for engaging the swinging arms or the conforming plate and preventing strain being transmitted to the arms and their pivots.
Claim 7
Dependent Claim
38 words
A paving machine as claimed in claim 1, comprising a subframe on which said conforming plate is carried, and means supporting said subframe on said main frame for horizontal movement in a direction transverse of said longitudinal path.
Claim 8
Dependent Claim
63 words
A paving machine as claimed in claim 1, comprising a subframe on which said conforming plate is carried, said subframe being suspended from said main frame by sets of horizontally disposed, longitudinally directed swinging arms having pivotal connections with said main frame and said subframe so that said conforming plate is capable of horizontal movement in a direction transverse of said longitudinal path.
References Cited (Backward Citations)
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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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |