Patent US3877528A successfully refreshed from Google Patents.
US3877528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill wagon for transporting and erecting rock drilling rigs
Assignee: Individual
•
Filing: 1973-10-01
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Granted: 1975-04-15
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Expires: 1993-10-01
Abstract
Abstract Drill wagon for transporting and erecting rock drilling rigs with a mobile undercarriage and an obliquely upwardly directed boom secured to the undercarriage. A drill feed frame is pivotally mounted to the free end of the boom. One or more support legs capable of being raised and lowered hydraulically are mounted to the undercarriage. The feed frame is adapted to be pivoted from side to side, the undercarriage is supported by two wheel bogies which are pivotally mounted approximately at the centre of their length and which are pivotable about an axis transversely of the longitudinal axis of the undercarriage. The bogies are pivotable independently of one another by means of respective motors, preferably hydraulic cylinders.
Inventors
- 👤 Olav Reiersdal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:56
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/025; E21B7/024
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
152 words
An improved drill wagon for transporting and erecting rock drilling rigs comprising a mobile undercarriage and an obliquely upwardly directed boom secured thereto, a drill feed frame pivotally mounted to the free end of the boom, and at least one support leg mounted on the undercarriage and capable of being raised and lowered hydraulically wherein the improvement comprises the following further features in combination: a. two bogies are provided for the undercarriage, said bogies being pivotally mounted approximately at the centre of their length and being pivotable about an axis transverse to the longitudinal axis of the undercarriage b. said bogies are pivotable independently of one another respective driving means, and c. said bogies are sufficiently short and arranged sufficiently far out at the end of the undercarriage opposed to the boom, that the plumb-line through the centre of gravity of the entire apparatus is outside the support surface of the bogies.
Claim 2
Dependent Claim
152 words
An improved drill wagon for transporting and erecting rock drilling rigs comprising a mobile undercarriage and an obliquely upwardly directed boom secured thereto, a drill feed frame pivotally mounted to the free end of the boom, and at least one support leg mounted on the undercarriage and capable of being raised and lowered hydraulically wherein the improvement comprises the following further features in combination: a. two bogies are provided for the undercarriage, said bogies being pivotally mounted approximately at the centre of their length and being pivotable about an axis transverse to the longitudinal axis of the undercarriage b. said bogies are pivotable independently of one another respective driving means, and c. said bogies are sufficiently short and arranged sufficiently far out at the end of the undercarriage opposed to the boom, that the plumb-line through the centre of gravity of the entire apparatus is outside the support surface of the bogies.
Claim 3
Dependent Claim
43 words
Drill wagon according to claim 1 in which the driving means for said bogies comprises hydraulic cylinders arranged horizontally and respectively engaging the bogies through an arm projecting over the center of rotation, so that the bogies can be rotated through approximately 180*.
Claim 4
Dependent Claim
37 words
Drill wagon according to claim 1, in which each bogie is provided with drive wheels at the ends thereof, and is also provided with wheels of smaller diameter than the drive wheels located between said drive wheels.
References Cited (Backward Citations)
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US3088531A
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US3189103A
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US3565184A
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |