US3659654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable ripper tip
Assignee: Caterpillar Inc
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Filing: 1970-04-10
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Granted: 1972-05-02
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Expires: 1990-04-10
Abstract
Abstract A ripper in which the ground engaging tip can be advanced in its holder to accommodate for wear of the ripper tip. The tip may be advanced manually or hydraulically depending on the mechanism used and is held in place by friction and/or a pinning means.
Inventors
- 👤 James M Davies
- 👤 Larry G Hackmann
- 👤 Robert A Peterson
- 👤 Roger M Smith
- 👤 Leon A Wirt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:55
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2833; E02F9/2875
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
In an earth ripping device, a ripper tip adjustably fixed upon a mounting means, means cooperating with said mounting means and said tip for selectively positioning said tip relative to said mounting means in a plurality of positions along a longitudinal direction of said mounting means whereby said tip may be positioned to extend beyond the leading edge of any other structure of the device regardless of the amount of wear of the leading end of said tip, protector means cooperating with said tip and said mounting means for protection of said mounting means against wear thereof, wherein said mounting means includes a ripper shank and said means for positioning said tip includes a cylinder in said shank, and a piston in said cylinder operative to move said tip in a longitudinal direction to extend the leading end of said tip beyond the leading edges of said shank and said protector means as said tip becomes worn, and means in said shank for providing a flow of fluid into said cylinder to actuate said piston.
Claim 2
Dependent Claim
175 words
In an earth ripping device, a ripper tip adjustably fixed upon a mounting means, means cooperating with said mounting means and said tip for selectively positioning said tip relative to said mounting means in a plurality of positions along a longitudinal direction of said mounting means whereby said tip may be positioned to extend beyond the leading edge of any other structure of the device regardless of the amount of wear of the leading end of said tip, protector means cooperating with said tip and said mounting means for protection of said mounting means against wear thereof, wherein said mounting means includes a ripper shank and said means for positioning said tip includes a cylinder in said shank, and a piston in said cylinder operative to move said tip in a longitudinal direction to extend the leading end of said tip beyond the leading edges of said shank and said protector means as said tip becomes worn, and means in said shank for providing a flow of fluid into said cylinder to actuate said piston.
Claim 3
Dependent Claim
33 words
The device of claim 1 including means in said piston for preventing hydraulic lock in said cylinder and for withdrawing said piston from said cylinder so as to allow replacement of said tip.
Claim 4
Dependent Claim
18 words
The device of claim 2 wherein said ripper tip is of constant cross section throughout the length thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |