US3754603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Land clearing machine
Assignee: Individual
•
Filing: 1971-10-12
•
Granted: 1973-08-28
•
Expires: 1991-10-12
Abstract
Abstract A mobile frame, preferably self-propelled, supporting for adjustable vertical pivotal movement a transverse rotary drum carrying a plurality of circumferentially and axially spaced flails. The drum is driven internally by a fluid motor supplied with a source of fluid power from the mobile frame.
Inventors
- 👤 N Bogie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:04
CPC Classifications
A; A01; A01B; A01B33/00; A01B33/02; A01B33/025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
224 words
A land clearing machine comprising: a. an elongated mobile frame having a front end and a rear end, b. ground engaging endless traction members mounted on each side of said mobile frame, c. drive means on said mobile frame for driving said traction members, d. a yoke frame having forwardly projecting, spaced end members, e. means mounting said yoke frame on the fRont end of said mobile frame for vertically adjustable movement relative to said mobile frame, said end members being spaced transversely of said mobile frame, f. hydraulic means on said mobile frame for raising and lowering said yoke frame, g. an elongated drum, h. a plurality of flails, one end of each flail being fixed to the exterior surface of said drum at a predetermined location for rotation with said drum, i. journal means supporting the opposite ends of said drum on the respective end members for rotary movement about an axis transverse to, and in front of, said mobile frame, j. a hydraulic motor, k. means mounting said hydraulic motor within said drum and fixed relative to one of said end members, l. drive coupling means within said drum connecting said motor to said drum, m. a hydraulic pump on said frame, n. a hydraulic fluid circuit connecting said pump to said motor through said journal means for driving said motor.
Claim 2
Dependent Claim
224 words
A land clearing machine comprising: a. an elongated mobile frame having a front end and a rear end, b. ground engaging endless traction members mounted on each side of said mobile frame, c. drive means on said mobile frame for driving said traction members, d. a yoke frame having forwardly projecting, spaced end members, e. means mounting said yoke frame on the fRont end of said mobile frame for vertically adjustable movement relative to said mobile frame, said end members being spaced transversely of said mobile frame, f. hydraulic means on said mobile frame for raising and lowering said yoke frame, g. an elongated drum, h. a plurality of flails, one end of each flail being fixed to the exterior surface of said drum at a predetermined location for rotation with said drum, i. journal means supporting the opposite ends of said drum on the respective end members for rotary movement about an axis transverse to, and in front of, said mobile frame, j. a hydraulic motor, k. means mounting said hydraulic motor within said drum and fixed relative to one of said end members, l. drive coupling means within said drum connecting said motor to said drum, m. a hydraulic pump on said frame, n. a hydraulic fluid circuit connecting said pump to said motor through said journal means for driving said motor.
Claim 3
Dependent Claim
53 words
The invention according to claim 1 further comprising a hollow shaft fixed to one of said end members and projecting coaxially within the corresponding end of said drum, said journal means comprising bearing means on said one end of said drum journaled about said shaft, said fluid circuit extending through said hollow shaft.
Claim 4
Dependent Claim
42 words
The invention according to claim 1 in which said drive coupling means comprises a driven member fixed to the interior of said drum, a drive shaft driven by said hydraulic motor, and a connector coupling said drive shaft to said driven member.
Claim 5
Dependent Claim
125 words
The invention according to claim 1 in which said yoke frame comprises an elongated back member extending transversely of said mobile frame, said yoke frame mounting means comprising a pair of lower arms fixed to said back member and projecting rearward, pin means connecting said lower arms to the front of said mobile frame for pivotal movement about a transverse axis, upper pin means fixed to said back member above said lower arms, upper link means comprising a knee joint pivotally connecting said mobile frame to said upper pin means, said means for raising and lowering said yoke frame comprising a linear hydraulic motor connecting the mobile frame to said knee joint, and means for supplying hydraulic fluid from said pump to said linear motor.
Claim 6
Dependent Claim
29 words
The invention according to claim 1 in which the transverse distance between the end members of said yoke frame is greater than the transverse spacing between said traction members.
Claim 7
Dependent Claim
38 words
The invention according to claim 1 further comprising a hydraulic traction motor operatively connected to each traction member for driving said traction member, and means for supplying hydraulic fluid from said pump to each of said traction motors.
References Cited (Backward Citations)
US1782636A
Cited
US1862035A
Cited
US2109393A
Cited
US2691262A
Cited
US3051459A
Cited
US3020694A
Cited
US3210123A
Cited
US3271939A
Cited
US3557473A
Cited
US3584406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |