US4220184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delimber
Assignee: Individual
•
Filing: 1978-12-14
•
Granted: 1980-09-02
•
Expires: 1998-12-14
Abstract
Abstract A delimber attachment for a tractor comprises an elongate drum mounted transversely and rotatably within a downwardly opening enlosure. The drum has a plurality of chains connected at one thereto. A frame extends forwardly from the enclosure. A hinge connector near a forward end of the frame hingedly connects the delimber to the tractor for upward and downward pivoting. A cable receiver is located near a top portion of the enclosure. A hydraulic damping cylinder is connected near a first end to the delimber and extends upwardly and forwardly therefrom. The cylinder has a clasp near a second end of the cylinder for connecting the cylinder to the tractor above the hinge connector.
Inventors
- 👤 Howard F. Hallett
- 👤 Clarence W. Hallett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:44
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/095
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
130 words
A delimber attachment for a tractor, the attachment having a forward end and comprising: an elongate drum mounted transversely and rotatably within a downwardly opening enclosure, the drum having a plurality of chains connected at one end thereto; a frame extending from the enclosure towards the forward end; a hinge connector on the frame near the forward end for hingedly connecting the delimber to the tractor and permitting upward and downward pivoting of the delimber; cable securing means connected to a top portion of the enclosure; and a hydraulic damping cylinder having a first end connected to the delimber, extending upwardly and towards the forward end of the delimber, and having means near a second end of the cylinder for connecting the cylinder to the tractor above the hinge connector.
Claim 2
Dependent Claim
130 words
A delimber attachment for a tractor, the attachment having a forward end and comprising: an elongate drum mounted transversely and rotatably within a downwardly opening enclosure, the drum having a plurality of chains connected at one end thereto; a frame extending from the enclosure towards the forward end; a hinge connector on the frame near the forward end for hingedly connecting the delimber to the tractor and permitting upward and downward pivoting of the delimber; cable securing means connected to a top portion of the enclosure; and a hydraulic damping cylinder having a first end connected to the delimber, extending upwardly and towards the forward end of the delimber, and having means near a second end of the cylinder for connecting the cylinder to the tractor above the hinge connector.
Claim 3
Dependent Claim
41 words
A delimber attachment as claimed in claim 1, the cylinder being hingedly connected to the delimber and the means near the second end of the cylinder being hinge means for hingedly connecting the second end of the cylinder to the tractor.
Claim 4
Dependent Claim
22 words
A delimber attachment as claimed in claim 1, the delimber comprising a motor operatively connected to the drum for rotating the drum.
Claim 5
Dependent Claim
109 words
A delimber attachment as claimed in claim 3, the cylinder having an internal piston and a piston rod connected to the piston and extending axially from the cylinder, the delimber attachment including a hydraulic pump, a first conduit connecting the pump to a back end of the cylinder, a second conduit connecting the pump to a front end of the cylinder, a hydraulic fluid reservoir for containing hydraulic fluid at a reservoir pressure, a return conduit for a flow of hydraulic fluid connected to the forward end of the cylinder and to the reservoir and a restriction in the return conduit to limit the flow of hydraulic fluid therethrough.
Claim 6
Dependent Claim
36 words
A delimber attachment as claimed in claim 4, comprising a check valve in the second conduit restricting the flow of hydraulic fluid from the front of the cylinder to the reservoir to flow through the restriction.
Claim 7
Dependent Claim
106 words
A delimber attachment as claimed in claim 5, comprising a suction conduit connecting the reservoir to the pump, a pressure regulator conduit connecting the first and second conduits to the reservoir and a pressure regulator connected along the pressure regulator conduit to permit the flow of fluid towards the reservoir above a regulated pressure, a make up conduit connecting the first and second conduits to the reservoir and a make up check valve connected along the make up conduit for permitting the flow of fluid from the reservoir to the cylinder when the fluid pressure in the first and second conduits is below the reservoir pressure.
Claim 8
Dependent Claim
17 words
A delimber attachment as claimed in claim 6, the restriction comprising an orifice in the return conduit.
Claim 9
Dependent Claim
21 words
A delimber attachment as claimed in claim 7, the return conduit extending upwardly from near the forward end of the cylinder.
Claim 10
Dependent Claim
21 words
A delimber attachment as claimed in claim 1, the hinge connector comprising a laterally extending, generally cylindrical drawbar on the delimber.
Claim 11
Dependent Claim
44 words
A delimber attachment as claimed in claim 9, comprising a drawbar hitch for rigid connection to the tractor, the hitch having a laterally extending slot for receiving the drawbar and a removable, generally vertical hitch pin for extending through the hitch behind the drawbar.
Claim 12
Dependent Claim
53 words
A delimber attachment as claimed in claim 10, the hitch comprising a rearwardly and outwardly extending side guide to each side of the slot, an upwardly and rearwardly extending guide above the slot and a downwardly and rearwardly extending guide below the slot, the guides being for guiding the drawbar towards the slot.
Claim 13
Dependent Claim
52 words
A delimber attachment as claimed in claim 1, the means near the second end of the cylinder comprising projections extending laterally from each side of the cylinder near a forward end thereof and a clasp for the projections fixedly connectable to the tractor, the clasp comprising recesses for releasably securing the projections.
Claim 14
Dependent Claim
66 words
A delimber attachment as claimed in claim 12, the clasp comprising a mount fixedly connectable to the tractor and a pair of interconnected, laterally spaced-apart securing members pivotally connected to the mount for upward and downward pivoting, each securing member having a rearwardly and upwardly curving guide surface for a projection, the recesses comprising downwardly opening tubular sections extending horizontally and inwardly from each securing member.
Claim 15
Dependent Claim
71 words
In combination, the delimber attachment as claimed in claim 1 and a self-powered tractor, the tractor having an upwardly extending boom with a top end, the cylinder being connected to the tractor near the top end of the boom, the tractor having a winch and a reel of cable for the winch, the cable extending from the tractor to the cable securing means on the delimber when the delimber is operative.
References Cited (Backward Citations)
US2501925A
Cited
GB902895A
Cited
US2970851A
Cited
US3754603A
Cited
US4073507A
Cited
US4061166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |