Patent US3724900A successfully refreshed from Google Patents.
US3724900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete pavement cutting machine
Assignee: BURGELMAN ASSOCIATES BV AMSTERDAM A NETHERLANDS CORP
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Filing: 1971-12-17
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Granted: 1973-04-03
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Expires: 1991-12-17
Abstract
Abstract Pavement cutting machine with a carriage frame having a cutter for cutting grooves in a pavement. The carriage frame has front wheels in front of the cutter and rear wheels at the rear of the cutter, an auxiliary wheel being provided with a support which retains the bottom of its periphery above and out of contact with the pavement in the absence of an abrupt drop in the level of the pavement. The auxiliary wheel contacts the pavement to limit the depth of cut of the cutter when the wheel in front of the cutter encounters an abrupt drop in the level of the pavement.
Inventors
- 👤 C Hatcher
- 👤 G Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:15
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/085; E01C23/088
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
A pavement cutting machine comprising a carriage having a longitudinal axis, a frame member associated with said carriage, said frame member having a cutter having a shaft extending transversely of said axis, said carriage having front wheel means in front of said cutter and rear wheel means at the rear of said cutter, auxiliary wheel means including an auxiliary wheel rotatable on an axis below and substantially parallel to the axis of said cutter shaft, and means for supporting said auxiliary wheel with the bottom of its periphery above and out of contact with the pavement, in position to contact the pavement and limit the depth of cut of said cutter when said front wheel means encounters an abrupt drop in the level of the pavement.
Claim 2
Dependent Claim
126 words
A pavement cutting machine comprising a carriage having a longitudinal axis, a frame member associated with said carriage, said frame member having a cutter having a shaft extending transversely of said axis, said carriage having front wheel means in front of said cutter and rear wheel means at the rear of said cutter, auxiliary wheel means including an auxiliary wheel rotatable on an axis below and substantially parallel to the axis of said cutter shaft, and means for supporting said auxiliary wheel with the bottom of its periphery above and out of contact with the pavement, in position to contact the pavement and limit the depth of cut of said cutter when said front wheel means encounters an abrupt drop in the level of the pavement.
Claim 3
Dependent Claim
43 words
Machine according to claim 1, said supporting means for said auxiliary wheel means comprising means for adjusting the vertical position of said auxiliary wheel means to a position slightly above a plane tangent to the bottom of said front and rear wheel means.
Claim 4
Dependent Claim
34 words
Machine according to claim 1, said supporting means for said auxiliary wheel means comprising bracket means carried by said frame member for supporting said auxiliary wheel beyond the outer end of said cutter shaft.
Claim 5
Dependent Claim
18 words
Machine according to claim 1, said auxiliary wheel means being provided at each end of said cutter shaft.
Claim 6
Dependent Claim
51 words
Machine according to claim 1, said supporting means comprising a fixed member and a relatively movable member, said fixed member being carried by said frame member, said auxiliary wheel being carried by said relatively movable member, and means for securing said relatively movable member to said fixed member in adjusted position.
Claim 7
Dependent Claim
36 words
Machine according to claim 5, said fixed member comprising a bracket carried by said frame member for supporting said fixed and relatively movable members and said auxiliary wheel beyond the outer end of said cutter shaft.
Claim 8
Dependent Claim
23 words
Machine according to claim 5, said cutter shaft having a bearing support, and means for securing said fixed member to said bearing support.
References Cited (Backward Citations)
US2990660A
Cited
US3608969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |