Patent US4027408A successfully refreshed from Google Patents.
US4027408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digger teeth with interlocking tooth elements
Assignee: Individual
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Filing: 1976-01-21
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Granted: 1977-06-07
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Expires: 1996-01-21
Abstract
Abstract A two-part tooth for the scoop of an earth-moving machine, the tooth comprising a first tooth element adapted to be attached to one side of the bottom wall of the scoop and a second tooth element adapted to be attached to the other side of the bottom wall of the scoop. The two tooth elements are provided with interengaging parts by means of which they are linked together to resist separation. They are also bolted together through the wall of the scoop. One of the two tooth elements has a projecting tooth and serves as a removable tip, the other tooth element remaining in position on the scoop.
Inventors
- 👤 Ferdinando Ramella
- 👤 Pier Vincenzo Ramella
- 👤 Arnaldo Ramella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:32
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2825
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
329 words
A tooth for the scoop of an earth-moving machine, to be assembled onto the free edge of the bottom wall of said scoop, said tooth comprising: a first tooth element having, an elongate portion shaped to fit onto one face of said bottom wall of said scoop, and a shaped projecting portion which extends forwardly of said free edge of said bottom wall of said scoop when said first tooth element is fitted thereto, a second tooth element having, an elongate portion shaped to fit onto the other face of said bottom wall of said scoop directly opposite said elongate portion of said first tooth element, and an enlarged wedge-shaped projecting portion, said wedge-shaped projecting portion extending forwardly from the free edge of said bottom wall when said second tooth element is mounted thereon, said wedge-shaped projecting portion of said second tooth element having a rear surface and two inclined surfaces which diverge rearwardly to said rear surface, means defining an aperture in said rear surface, said aperture communicating with an interior cavity within said wedge-shaped projecting portion, one of said two inclined surfaces of said wedge-shaped projecting portion being generally continuous with that surface of said elongate portion of said second element which is remote from said bottom wall of the scoop upon assembly of the tooth thereto, the edge of said aperture in said rear surface of said wedge-shaped projecting portion remote from said elongate portion of said second element being undercut to form a lip under which engages the end of said shaped projecting portion of said first tooth element, and means defining a transverse groove in said end of said shaped projecting portion of said first tooth element, said transverse groove receiving said lip upon assembly of said two tooth elements whereby said first and second tooth elements are interengaged and locked together to resist relative separating movement in a direction transverse the length of said elongate portions of said first and second tooth elements.
Claim 2
Dependent Claim
329 words
A tooth for the scoop of an earth-moving machine, to be assembled onto the free edge of the bottom wall of said scoop, said tooth comprising: a first tooth element having, an elongate portion shaped to fit onto one face of said bottom wall of said scoop, and a shaped projecting portion which extends forwardly of said free edge of said bottom wall of said scoop when said first tooth element is fitted thereto, a second tooth element having, an elongate portion shaped to fit onto the other face of said bottom wall of said scoop directly opposite said elongate portion of said first tooth element, and an enlarged wedge-shaped projecting portion, said wedge-shaped projecting portion extending forwardly from the free edge of said bottom wall when said second tooth element is mounted thereon, said wedge-shaped projecting portion of said second tooth element having a rear surface and two inclined surfaces which diverge rearwardly to said rear surface, means defining an aperture in said rear surface, said aperture communicating with an interior cavity within said wedge-shaped projecting portion, one of said two inclined surfaces of said wedge-shaped projecting portion being generally continuous with that surface of said elongate portion of said second element which is remote from said bottom wall of the scoop upon assembly of the tooth thereto, the edge of said aperture in said rear surface of said wedge-shaped projecting portion remote from said elongate portion of said second element being undercut to form a lip under which engages the end of said shaped projecting portion of said first tooth element, and means defining a transverse groove in said end of said shaped projecting portion of said first tooth element, said transverse groove receiving said lip upon assembly of said two tooth elements whereby said first and second tooth elements are interengaged and locked together to resist relative separating movement in a direction transverse the length of said elongate portions of said first and second tooth elements.
Claim 3
Dependent Claim
46 words
The tooth of claim 1, wherein said shaped projecting portion of said first tooth element has a projecting heel on the surface thereof which faces towards said second tooth element, said heel engaging with a cooperating abutment on the facing surface of said second tooth element.
Claim 4
Dependent Claim
74 words
The tooth of claim 2, wherein said cooperating abutment on the surface of said second tooth element which faces towards said first tooth element has two mutually perpendicular abutment surfaces which both engage said heel of said first tooth element, one of said abutment surfaces lying generally parallel to the length of the elongate portion of said second tooth element, and the other of said abutment surfaces lying generally perpendicular to said one surface.
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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |