US4040489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock picker
Assignee: Individual
•
Filing: 1976-01-30
•
Granted: 1977-08-09
•
Expires: 1996-01-30
Abstract
Abstract Conventional rock pickers usually consist of a rotary rake or a fixed prong assembly. The present device incorporates both systems and provides further for raising and lowering both the prong assembly and the rotary rake relative to the ground and secondly, it provides an hydraulic drive for the rotary rake so that both the speed and direction of rotation of the rotary rake can be controlled by the operator.
Inventors
- 👤 Leslie Hulicsko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:25
CPC Classifications
A; A01; A01B; A01B43/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
230 words
A rock picker comprising in combination a supporting frame, a stone bucket in said frame, ground engaging wheels mounted on said frame, a prong assembly mounted within said frame, means mounting said prong assembly for raising and lowering same relative to the ground, a rotary rake assembly mounted in said frame above said prong assembly, and power means operatively connected to said rotary rake assembly for rotating same at varying speeds and in either direction, said rotary rake assembly cooperating with said prong assembly to move stones from said prong assembly into said stone bucket, said rotary rake comprising a cross shaft journalled for rotation in said frame above said prong assembly, at least two sets of raking teeth mounted diametrically upon said shaft, means mounting said teeth upon said shaft, said last mentioned means including a pair of side flanges secured one to adjacent each end of said shaft, stop means on said side flanges adjacent each end thereof, a mounting member pivoted by one end thereof to adjacent each end of said side flanges, a cross bar extending between the other ends of the corresponding mounting members of said side flanges, and a plurality of stone picking teeth secured to and extending from said cross bar, and tension spring means extending between said mounting member and said side flanges normally urging said mounting member against said stop means.
Claim 2
Dependent Claim
230 words
A rock picker comprising in combination a supporting frame, a stone bucket in said frame, ground engaging wheels mounted on said frame, a prong assembly mounted within said frame, means mounting said prong assembly for raising and lowering same relative to the ground, a rotary rake assembly mounted in said frame above said prong assembly, and power means operatively connected to said rotary rake assembly for rotating same at varying speeds and in either direction, said rotary rake assembly cooperating with said prong assembly to move stones from said prong assembly into said stone bucket, said rotary rake comprising a cross shaft journalled for rotation in said frame above said prong assembly, at least two sets of raking teeth mounted diametrically upon said shaft, means mounting said teeth upon said shaft, said last mentioned means including a pair of side flanges secured one to adjacent each end of said shaft, stop means on said side flanges adjacent each end thereof, a mounting member pivoted by one end thereof to adjacent each end of said side flanges, a cross bar extending between the other ends of the corresponding mounting members of said side flanges, and a plurality of stone picking teeth secured to and extending from said cross bar, and tension spring means extending between said mounting member and said side flanges normally urging said mounting member against said stop means.
Claim 3
Dependent Claim
53 words
The rock picker according to claim 1 in which said prong assembly includes a pair of spaced and parallel substantially vertical side plates and a plurality of spaced and parallel pick up bars mounted between said side plates and adjacent the lower side thereof, said pick up bars having ground engaging front ends.
Claim 4
Dependent Claim
41 words
The rock picker according to claim 1 in which said rotary rake assembly is operatively connected to said means to raise and lower said prong assembly relative to the ground whereby said rotary rake assembly moves simultaneously with said prong assembly.
Claim 5
Dependent Claim
42 words
The rock picker according to claim 3 which includes a stone deflector mounted above said stone bucket and inclining upwardly and forwardly towards said rotary rake assembly, said stone deflector including a supporting frame and a deflector panel mounted in said frame.
Claim 6
Dependent Claim
41 words
The rock picker according to claim 2 in which said rotary rake assembly is operatively connected to said means to raise and lower said prong assembly relative to the ground whereby said rotary rake assembly moves simultaneously with said prong assembly.
Claim 7
Dependent Claim
42 words
The rock picker according to claim 5 which includes a stone deflector mounted above said stone bucket and inclining upwardly and forwardly towards said rotary rake assembly, said stone deflector including a supporting frame and a deflector panel mounted in said frame.
Claim 8
Dependent Claim
42 words
The rock picker according to claim 1 which includes a stone deflector mounted above said stone bucket and inclining upwardly and forwardly towards said rotary rake assembly, said stone deflector including a supporting frame and a deflector panel mounted in said frame.
Claim 9
Dependent Claim
42 words
The rock picker according to claim 2 which includes a stone deflector mounted above said stone bucket and inclining upwardly and forwardly towards said rotary rake assembly, said stone deflector including a supporting frame and a deflector panel mounted in said frame.
Claim 10
Dependent Claim
27 words
The rock picker according to claim 1 in which said shaft is mounted to said side plates, the individual picking teeth passing between adjacent pick up bars.
Claim 11
Dependent Claim
41 words
The rock picker according to claim 9 in which said rotary rake assembly is operatively connected to said means to raise and lower said prong assembly relative to the ground whereby said rotary rake assembly moves simultaneously with said prong assembly.
Claim 12
Dependent Claim
42 words
The rock picker according to claim 10 which includes a stone deflector mounted above said stone bucket and inclining upwardly and forwardly towards said rotary rake assembly, said stone deflector including a supporting frame and a deflector panel mounted in said frame.
Claim 13
Dependent Claim
27 words
The rock picker according to claim 2 in which said shaft is mounted to said side plates, the individual picking teeth passing between adjacent pick up bars.
Claim 14
Dependent Claim
41 words
The rock picker according to claim 12 in which said rotary rake assembly is operatively connected to said means to raise and lower said prong assembly relative to the ground whereby said rotary rake assembly moves simultaneously with said prong assembly.
Claim 15
Dependent Claim
42 words
The rock picker according to claim 13 which includes a stone deflector mounted above said stone bucket and inclining upwardly and forwardly towards said rotary rake assembly, said stone deflector including a supporting frame and a deflector panel mounted in said frame.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |