US3777919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile excavator
Assignee: Konijn Machinebouw BV
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Filing: 1972-04-13
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Granted: 1973-12-11
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Expires: 1992-04-13
Abstract
Abstract An excavator vehicle with a crane mounted near one end rotatably about a vertical axis. The vehicle has at or near the said end two support legs with adjustable length, adapted to be pivoted at their end connected to the vehicle about a horizontal and a vertical axis and to be fixed in both directions at different angular positions relative to the vehicle. The two support legs have at their free end an at least substantially horizontal support or a wheel adapted to be rotated about a horizontal axis. The vehicle has, at its other end, a third support leg which is also pivotable at its end mounted on the vehicle about a vertical and a horizontal axis and may be fixed in both directions in different angular positions relative to the vehicle. The third support leg has at its free end a vertical plate or at least one wheel rotatable about a horizontal axis.
Inventors
- 👤 N Konijn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:34
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/06; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/413; E02F3/4131; E02F9/02; E02F9/024
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
135 words
An excavator vehicle with a crane mounted near one end rotatably about a vertical axis, wherein the vehicle has proximate said end two support legs with adjustable length, adapted to be pivoted at their end connected to the vehiCle about a horizontal and a vertical axis and to be fixed in both directions at different angular positions relative to the vehicle, said legs each having at their free ends support means adapted to be rotated about a horizontal axis, said vehicle having at its other end, a third support leg pivotable at its end mounted on the vehicle about a vertical and a horizontal axis and adapted to be fixed in both directions in different angular positions relative to the vehicle, and said third support leg having at its free end vertically extending support means.
Claim 2
Dependent Claim
135 words
An excavator vehicle with a crane mounted near one end rotatably about a vertical axis, wherein the vehicle has proximate said end two support legs with adjustable length, adapted to be pivoted at their end connected to the vehiCle about a horizontal and a vertical axis and to be fixed in both directions at different angular positions relative to the vehicle, said legs each having at their free ends support means adapted to be rotated about a horizontal axis, said vehicle having at its other end, a third support leg pivotable at its end mounted on the vehicle about a vertical and a horizontal axis and adapted to be fixed in both directions in different angular positions relative to the vehicle, and said third support leg having at its free end vertically extending support means.
Claim 3
Dependent Claim
27 words
An excavator vehicle according to claim 1, wherein the two first support legs are mounted on the front side of the vehicle, near the two edges thereof.
Claim 4
Dependent Claim
29 words
An excavator vehicle according to claim 1, wherein the end of the third support leg connected to the vehicle, is located in the longitudinal centre plane of the vehicle.
Claim 5
Dependent Claim
14 words
An excavator vehicle according to claim 1, wherein all support legs are telescopic legs.
Claim 6
Dependent Claim
51 words
An excavator vehicle according to claim 4, wherein each telescopic support leg includes one part having longitudinally spaced apart holes, and a fixing stud adapted to be pushed through one of said holes and a hole in the adjacent part of the support leg providing for longitudinal adjustment of each leg.
Claim 7
Dependent Claim
55 words
An excavator vehicle according to claim 1, wherein the support means on the free ends of said two first support legs each comprise a wheel rotatable about a horizontal axis and adapted to be turned into the horizontal for use as support, in which horizontal position the wheel is adapted to be secured against rotation.
Claim 8
Dependent Claim
101 words
An excavator vehicle according to claim 6, wherein each telescopic support leg consists of two parts, while the outer part of each of the two first support legs carrying a wheel at its free end is adapted to be rotated about its longitudinal axis relative to the adjacent support leg part, whilst one of the parts of each of said first support legs has two rows of longitudinally spaced apart holes, wherein the holes of one row are located in a plane of said part of the support leg which is perpendicular to the plane containing the other row of holes.
Claim 9
Dependent Claim
37 words
An excavator vehicle according to claim 1, wherein a drive, such as a hydraulic cylinder-piston unit is provided for swivelling each support leg about its horizontal axis, and for fixing the support leg in the desired position.
Claim 10
Dependent Claim
52 words
An excavator vehicle according to claim 8, wherein a drive, such as a hydraulic cylinder-piston unit acting between the vehicle and the third support leg is provided for swivelling the third support leg about its vertical axis and for fixing the support leg in the desired angular position relative to the vehicle.
Claim 11
Dependent Claim
42 words
An excavator vehicle according to claim 8, wherein the two first support legs are adapted to be swivelled by hand about the vertical axis and may be fixed by a fixing stud in a number of angular positions relative to the vehicle.
Claim 12
Dependent Claim
58 words
An excavator vehicle according to claim 1, wherein the two first support legs have in their position parallel to the longitudinal centre plane of the vehicle and with the wheels rotatable about the horizontal axis, each a stub axle pointing towards the other support leg and are connected by a link rod fitted over these two stub axles.
Claim 13
Dependent Claim
31 words
An excavator vehicle according to claim 11, wherein the support means on the free end of said third support leg includes a horizontal axle, and two wheels rotatable about said axle.
Claim 14
Dependent Claim
87 words
An excavator vehicle according to claim 1, wherein the vehicle is adapted to be driven by an engine operable from the cab, which engine drives simultaneously an oil pump, and the same is connected with hydraulic cylinder-piston units for swivelling said support legs, with the hydraulic drive of the crane, with a grab mounted on the crane, and with a hydraulic winch carried by the vehicle at the end remote from the crane, wherein the control valves for the hydraulic installation are also operable from the cab.
Claim 15
Dependent Claim
28 words
An exCavator vehicle according to claim 1, said support means on the free ends of said two first support legs each comprising a substantially horizontally extending support member.
Claim 16
Dependent Claim
24 words
An excavator vehicle according to claim 1, said support means on the free end of said third support leg comprising a vertical plate member.
References Cited (Backward Citations)
GB767420A
Cited
US3479049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |