Patent US3737199A successfully refreshed from Google Patents.
US3737199A
Expired / Lapsed
US
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Earthworking tool
Assignee: Kennametal Inc
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Filing: 1971-06-28
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Granted: 1973-06-05
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Expires: 1991-06-28
Abstract
Abstract The specification discloses an earthworking tool, in which the tool has a pointed forward end with a hard insert therein, while rearwardly of the pointed end, the tool has laterally extending inclined shoulders, each provided with a hard wear resistant element mounted thereon.
Inventors
- 👤 E Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:11
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/18; E02F3/188; E02F3/20; E02F3/76; E02F3/78; E02F3/783; E02F9/00; E02F9/28; E02F9/2866
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
An earthworking tool comprising: a bar-like body having a pair of oppositely facing major faces and side edges and also having a forward portion and a rearward portion, said forward portion having at least one pair of shoulders near the free end projecting laterally outwardly from said forward at a steep angle, at least one projection integral with said forward portion and extending forwardly from between said shoulders, said projection tapering inwardly toward the front, said shoulders inclining from one of said major faces toward the other thereof and also toward the rear from the ends nearest said projection thereof to the other ends thereof, said projection having a hard wear resistant insert mounted in the forward end thereof, hard wear resistant plates mounted on said shoulders, said rearward portion being adapted to be received in a holder, and said body including shoulder means at the juncture of said forward and rearward portions of said body adapted to abut the forward end of a holder in which said rearward portion is disposed.
Claim 2
Dependent Claim
172 words
An earthworking tool comprising: a bar-like body having a pair of oppositely facing major faces and side edges and also having a forward portion and a rearward portion, said forward portion having at least one pair of shoulders near the free end projecting laterally outwardly from said forward at a steep angle, at least one projection integral with said forward portion and extending forwardly from between said shoulders, said projection tapering inwardly toward the front, said shoulders inclining from one of said major faces toward the other thereof and also toward the rear from the ends nearest said projection thereof to the other ends thereof, said projection having a hard wear resistant insert mounted in the forward end thereof, hard wear resistant plates mounted on said shoulders, said rearward portion being adapted to be received in a holder, and said body including shoulder means at the juncture of said forward and rearward portions of said body adapted to abut the forward end of a holder in which said rearward portion is disposed.
References Cited (Backward Citations)
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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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |