US3796462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machinery for multiple grooving of pavement
Assignee: Cardinal Industries Inc
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Filing: 1972-09-15
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Granted: 1974-03-12
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Expires: 1992-09-15
Abstract
Abstract An hydraulic system is provided to perform the functions of vehicle propulsion and steering and of cutter rotation and height control in multiple grooving of pavement. Multiple cutter heads are controllable individually for use individually or in gangs. The load is distributed over a plurality of engines, each of which drives pumps for hydraulic motors adapted to rotate individual cutter heads separately or in unison.
Inventors
- 👤 D Staab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:50
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/085; E01C23/088; F; F15; F15B; F15B11/00; F15B11/16; F15B11/17; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/20576; F15B2211/70; F15B2211/705; F15B2211/7058; F15B2211/71; F15B2211/7114; F15B2211/7142; F15B2211/78
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
113 words
In multiple grooving of pavement wherein a cutter head having laterally spaced cutting blades is supported adjustably in height and is adapted to be rotated about a transverse horizontal axis and to be lowered into cutting contact with pavement and wherein provision is made for propelling the cutter head along the pavement and thereby producing multiple grooves therein, the improvement comprising propelling the head and rotating it by separate hydraulic motor means, steering the head and controlling its height by separate hydraulic cylinder means, and operating pumps to supply fluid to the foregoing hydraulic means by interconnecting some thereof to a first energy source and interconnecting others thereof to a second energy source.
Claim 2
Dependent Claim
113 words
In multiple grooving of pavement wherein a cutter head having laterally spaced cutting blades is supported adjustably in height and is adapted to be rotated about a transverse horizontal axis and to be lowered into cutting contact with pavement and wherein provision is made for propelling the cutter head along the pavement and thereby producing multiple grooves therein, the improvement comprising propelling the head and rotating it by separate hydraulic motor means, steering the head and controlling its height by separate hydraulic cylinder means, and operating pumps to supply fluid to the foregoing hydraulic means by interconnecting some thereof to a first energy source and interconnecting others thereof to a second energy source.
Claim 3
Dependent Claim
36 words
Multiple grooving of pavement according to claim 1, wherein a plurality of such cutter heads are individually rotatable and controllable in height, and including rotating different ones of the cutter heads via the respective energy sources.
Claim 4
Dependent Claim
34 words
Multiple grooving of pavement according to claim 2, wherein the cutter heads are operable in ganged relation, and including raising and lowering all the cutter heads via the same one of the energy sources.
Claim 5
Dependent Claim
33 words
Multiple grooving of pavement according to claim 1, including using a plurality of engines so to operate a plurality of cutter heads and including rotating separate pluralities of cutter heads by separate engines.
Claim 6
Dependent Claim
83 words
Apparatus for multiple grooving of pavement, comprising a plurality of individually rotatable cutter heads, each having laterally spaced cutting blades, an equal plurality of hydraulic motors connected to the respective heads to control the rotation thereof, vehicular frame means for supporting the respective cutting heads individually adjustably in height, an equal plurality of hydraulic cylinders connected to the respective heads to control the height thereof, an hydraulic motor to control vehicular propulsion, and engine means for actuating the hydraulic motors and hydraulic Cylinders.
Claim 7
Dependent Claim
83 words
Apparatus for multiple grooving of pavement, comprising a plurality of individually rotatable cutter heads, each having laterally spaced cutting blades, an equal plurality of hydraulic motors connected to the respective heads to control the rotation thereof, vehicular frame means for supporting the respective cutting heads individually adjustably in height, an equal plurality of hydraulic cylinders connected to the respective heads to control the height thereof, an hydraulic motor to control vehicular propulsion, and engine means for actuating the hydraulic motors and hydraulic Cylinders.
Claim 8
Dependent Claim
23 words
Multiple grooving apparatus according to claim 5, including hydraulic cylinder means actuated by such engine means and adapted to steer the vehicular frame.
Claim 9
Dependent Claim
68 words
Apparatus for multiple grooving of pavement, comprising a plurality of individually rotatable cutter heads, each having laterally spaced cutting blades, an equal plurality of hydraulic motors connected to the respective heads to control the rotation thereof, vehicular frame means for supporting the respective cutter heads individually and together, an hydraulic cylinder adapted to steer the vehicular frame, and engine means for actuating the hydraulic motors and hydraulic cylinder.
Claim 10
Dependent Claim
68 words
Apparatus for multiple grooving of pavement, comprising a plurality of individually rotatable cutter heads, each having laterally spaced cutting blades, an equal plurality of hydraulic motors connected to the respective heads to control the rotation thereof, vehicular frame means for supporting the respective cutter heads individually and together, an hydraulic cylinder adapted to steer the vehicular frame, and engine means for actuating the hydraulic motors and hydraulic cylinder.
Claim 11
Dependent Claim
30 words
Multiple grooving apparatus according to claim 7, including an equal plurality of hydraulic cylinders connected to the respective heads and actuated by the engine means to control the height thereof.
Claim 12
Dependent Claim
50 words
Multiple grooving apparatus according to claim 7, wherein the vehicular frame has a set of steerable wheels at the front thereof and a set of steerable wheels at the rear thereof, both sets of wheels being steerable together, and including respective hydraulic cylinder means connected to the sets of wheels.
Claim 13
Dependent Claim
24 words
Multiple grooving apparatus according to claim 7, including hydraulic motor means, actuated by the engine means, for propelling the vehicular frame along the pavement.
Claim 14
Dependent Claim
16 words
Multiple grooving apparatus according to claim 10, wherein the engine means includes a plurality of engines.
Claim 15
Dependent Claim
75 words
Apparatus for multiple grooving of pavement, comprising a plurality of individually rotatable cutter heads, each having laterally spaced cutting blades, hydraulic motors connected to the respective heads to control the rotation thereof, vehicular frame means for supporting the respective cutting heads individually adjustably in height, hydraulic cylinders connected to the respective heads to control the height thereof, an hydraulic motor to control vehicular propulsion, and engine means for actuating the hydraulic motors and hydraulic cylinders.
Claim 16
Dependent Claim
75 words
Apparatus for multiple grooving of pavement, comprising a plurality of individually rotatable cutter heads, each having laterally spaced cutting blades, hydraulic motors connected to the respective heads to control the rotation thereof, vehicular frame means for supporting the respective cutting heads individually adjustably in height, hydraulic cylinders connected to the respective heads to control the height thereof, an hydraulic motor to control vehicular propulsion, and engine means for actuating the hydraulic motors and hydraulic cylinders.
Claim 17
Dependent Claim
71 words
Apparatus for multiple grooving of pavement, comprising a plurality of individually rotatable cutter heads, each having laterally spaced cutting blades, hydraulic motors connected to the respective heads to control the rotation thereof, vehicular frame means for supporting the respective cutter heads individually and together, an hydraulic motor to control vehicular propulsion, an hydraulic cylinder adapted to steer the vehicular frame, and engine means for actuating the hydraulic motors and hydraulic cylinder.
Claim 18
Dependent Claim
71 words
Apparatus for multiple grooving of pavement, comprising a plurality of individually rotatable cutter heads, each having laterally spaced cutting blades, hydraulic motors connected to the respective heads to control the rotation thereof, vehicular frame means for supporting the respective cutter heads individually and together, an hydraulic motor to control vehicular propulsion, an hydraulic cylinder adapted to steer the vehicular frame, and engine means for actuating the hydraulic motors and hydraulic cylinder.
Claim 19
Dependent Claim
26 words
Multiple grooving apparatus according to claim 13, including hydraulic cylinders connected to the respective heads and actuated by the engine means to control the height thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |