Patent US2770202A successfully refreshed from Google Patents.
US3914948A
Expired / Lapsed
US
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Machine for burying an elongated flexible element of indefinite length utilizing contra-oscillatory blades
Assignee: Jacobsen Manufacturing Co
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Filing: 1974-05-07
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Granted: 1975-10-28
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Expires: 1994-05-07
Abstract
Abstract A self-propelled machine has a pair of arms pivotally mounted at their upper ends and eccentric means for contra-oscillating these arms forwardly and rearwardly as the machine traverses the ground. A leading blade is attached to the lower end of the more forward arm and a trailing blade is attached to the lower end of the more rearward arm. The eccentric means oscillates the arms, advancing the leading blade forwardly and the trailing blade rearwardly and vice versa. The leading blade is shorter than the trailing blade so that the full depth of the trench or slot is incrementally cut, the shorter or leading blade first cutting to a predetermined depth and then the longer or trailing blade cutting from that depth to the full depth determined by the length of the trailing blade. In one embodiment, a conical tunnel forming member is carried at the lower end of the trailing blade and to this tunnel forming member is attached the device that actually pulls the element to be buried. In a second embodiment, a feed device is oscillated behind the trailing blade, feeding the elongated element, more specifically a wire in this instance, into the trench or slot formed by the leading and trailing blades.
Inventors
- 👤 Jr William C Kaercher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:27
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/032; E; E02; E02F; E02F5/00; E02F5/02; E02F5/10; E02F5/102; E02F5/103
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
135 words
A machine for burying an elongated element of indefinite length comprising wheeled frame means adapted to traverse the surface of the ground, a leading blade pivotally carried by said frame means and extending downwardly therefrom, a trailing blade also pivotally carried by said frame means and extending farther downwardly from said frame means than said leading blade, said trailing blade being in rearward alignment with said leading blade, and means for asynchronously oscillating said blades to cause said leading blade to swing forwardly and said trailing blade to swing rearwardly during at least a portion of the time said leading blade is swinging forwardly, and alternately to cause said trailing blade to swing forwardly and said leading blade to swing rearwardly during at least a portion of the time said trailing blade is swinging forwardly.
Claim 2
Dependent Claim
135 words
A machine for burying an elongated element of indefinite length comprising wheeled frame means adapted to traverse the surface of the ground, a leading blade pivotally carried by said frame means and extending downwardly therefrom, a trailing blade also pivotally carried by said frame means and extending farther downwardly from said frame means than said leading blade, said trailing blade being in rearward alignment with said leading blade, and means for asynchronously oscillating said blades to cause said leading blade to swing forwardly and said trailing blade to swing rearwardly during at least a portion of the time said leading blade is swinging forwardly, and alternately to cause said trailing blade to swing forwardly and said leading blade to swing rearwardly during at least a portion of the time said trailing blade is swinging forwardly.
Claim 3
Dependent Claim
35 words
The machine defined in claim 1 in which said blades are oscillated so that said leading blade is moved forwardly relative the frame means only while said trailing blade is moved rearwardly and vice versa.
Claim 4
Dependent Claim
32 words
The machine defined in claim 1 in which said means for oscillating said blades includes a pair of eccentric members rotatable about a transverse axis and having substantially a 180* out-of-phase eccentricity.
Claim 5
Dependent Claim
33 words
The machine defined in claim 3 in which said means for oscillating said blades additionally includes a transverse drive shaft, said eccentric members being affixed to said drive shaft in a side-by-side relation.
Claim 6
Dependent Claim
190 words
A machine for burying an elongated element of indefinite length comprising wheeled frame means adapted to traverse the surface of the ground, a pair of arms pivotally mounted adjacent their upper ends to said frame means, each of said arms having forward and rearward cam surfaces intermediate their upper and lower ends, a drive shaft, a pair of eccentric members affixed to said drive shaft in a side-by-side relation, one of said eccentric members being between the cam surfaces of one of said arms and the other of said eccentric members being between the cam surfaces of the other of said arms, a leading blade attached to the lower end of one of said arms and extending downwardly therefrom, a trailing blade attached to the lower end of the other of said arms and extending downwardly therefrom farther from said frame means than said leading blade, and means for rotating said drive shaft to oscillate said arms and blades, said eccentric members having substantially a 180* out-of-phase relationship so that said leading blade is moved forwardly relative the frame means while said trailing blade is moved rearwardly and vice versa.
Claim 7
Dependent Claim
190 words
A machine for burying an elongated element of indefinite length comprising wheeled frame means adapted to traverse the surface of the ground, a pair of arms pivotally mounted adjacent their upper ends to said frame means, each of said arms having forward and rearward cam surfaces intermediate their upper and lower ends, a drive shaft, a pair of eccentric members affixed to said drive shaft in a side-by-side relation, one of said eccentric members being between the cam surfaces of one of said arms and the other of said eccentric members being between the cam surfaces of the other of said arms, a leading blade attached to the lower end of one of said arms and extending downwardly therefrom, a trailing blade attached to the lower end of the other of said arms and extending downwardly therefrom farther from said frame means than said leading blade, and means for rotating said drive shaft to oscillate said arms and blades, said eccentric members having substantially a 180* out-of-phase relationship so that said leading blade is moved forwardly relative the frame means while said trailing blade is moved rearwardly and vice versa.
Claim 8
Dependent Claim
42 words
The machine defined in claim 5 including a tunnel forming member carried at its lower end of said trailing blade and means attached to said tunnel forming member for pulling said elongated element into the tunnel formed by said tunnel forming member.
Claim 9
Dependent Claim
27 words
The machine defined in claim 5 including means disposed rearwardly of said trailing blade for feeding said elongated element downwardly into tHe trench cut by said blades.
Claim 10
Dependent Claim
13 words
The machine defined in claim 7 including means for oscillating said feeding means.
Claim 11
Dependent Claim
46 words
The machine defined in claim 8 in which said means for oscillating said feeding means includes a second shaft, an eccentric member on said second shaft, a pulley on said second shaft, a pulley on said first shaft, and a flexible belt entrained over said pulleys.
Claim 12
Dependent Claim
55 words
The machine defined in claim 9 including a third arm pivotally mounted adjacent its upper end to said frame means, said third arm having forward and rearward cam surfaces intermediate its upper and lower ends between which said eccentric members rotate and said feeding means being attached to the lower end of said third arm.
Claim 13
Dependent Claim
92 words
A machine for burying an elongated flexible element comprising wheeled frame means, a pair of oscillatory arms pivotally supported on said frame means, a first blade extending downwardly from one of said arms, a second blade longer than said first blade extending downwardly from the other of said arms in an aligned trailing relation with said first blade, eccentric means for oscillating said arms so that said blades alternately perform their cutting actions to form a trench, and means for laying said flexible element in the trench successively cut by said blades.
Claim 14
Dependent Claim
92 words
A machine for burying an elongated flexible element comprising wheeled frame means, a pair of oscillatory arms pivotally supported on said frame means, a first blade extending downwardly from one of said arms, a second blade longer than said first blade extending downwardly from the other of said arms in an aligned trailing relation with said first blade, eccentric means for oscillating said arms so that said blades alternately perform their cutting actions to form a trench, and means for laying said flexible element in the trench successively cut by said blades.
Claim 15
Dependent Claim
28 words
The machine defined in claim 11 including an engine on said frame means, a pump driven by said engine, and a hydraulic motor for rotating said eccentric means.
Claim 16
Dependent Claim
34 words
The machine defined in claim 12 including a lift mechanism supported on said frame means and hydraulic means for raising and lowering said lift mechanism, said arms being pivotally connected to said lift mechanism.
Claim 17
Dependent Claim
41 words
The machine defined in claim 13 in which said lift mechanism is pivotally connected to said frame means so thaat said blades which extend downwardly from said arms traverse an arcuate path into the ground when said lift mechanism is lowered.
Claim 18
Dependent Claim
21 words
The machine defined in claim 14 including means attached to said second blade for pulling the flexible element to be buried.
Claim 19
Dependent Claim
22 words
The machine defined in claim 14 including means depending from said lift mechanism for feeding said flexible element behind said second blade.
References Cited (Backward Citations)
US3685591A
Cited
US3789614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |