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US3567050A Expired / Lapsed US ⏱️ 0.0 years remaining

Demolition shovel

Assignee: Heather Corp
•
Filing: 1968-04-22
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Granted: 1971-03-02
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Expires: 1988-04-22
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Abstract

Abstract The invention comprises a shovel having a pair of jaws adapted to be mounted on a bulldozer or the like for operation. One of the jaws is an elongated channel member of U-shaped cross section which can be lifted and/or tilted by its connections with a bulldozer. The second jaw is pivoted along the top edge of the first jaw and has a toothed free edge adapted to cooperate with the bottom edge of the first jaw. Power cylinders cooperate between the first and second jaws to effect opening and closing relative movement.

Inventors

  • 👤 Henry P Pasquazzi
  • 👤 Anthony Pasquazzi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 09:05
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/402; E02F3/404

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 285 words
A demolition shovel for attachment to a construction vehicle and for use in demolition of a building construction and for handling and transferring of rubble thereafter, comprising a first jaw member defined by a shell formed in substantially a Ushaped configuration, a plurality of ribs formed on the interior surface of said shell and conforming to the U-shaped contour thereof, said ribs being spaced from each other along the width of said shell to define a plurality of U-shaped channels, a second jaw member mounted for pivotal movement with respect to said first jaw member, hydraulically operated control members interconnecting said jaw members and defining means for controlling pivotal movement of said second jaw member from an open to a closed position, said second jaw member including a plurality of teeth that are relatively short and that are located remote from said hydraulically operated control members, said teeth being disposed in spaced-apart relation, and each of said teeth being aligned with a channel in said first jaw member for being received therein when said second jaw member is moved to a closed position, means connected to the rear of said shell and to said vehicle for effecting a lifting movement of said first jaw member and the second jaw member pivotally interconnected thereto, and means pivotally connected to the rear of said shell for tilting said first jaw member around a horizontal axis, said hydraulically operated control members being operable to pivotally move said second jaw member and the teeth joined thereto relative to said first jaw member downwardly in an arcuate path for effecting a demolition stroke, whereafter said second jaw member cooperates with said first jaw member to handle and transfer demolished material.
Claim 2
Dependent Claim 285 words
A demolition shovel for attachment to a construction vehicle and for use in demolition of a building construction and for handling and transferring of rubble thereafter, comprising a first jaw member defined by a shell formed in substantially a Ushaped configuration, a plurality of ribs formed on the interior surface of said shell and conforming to the U-shaped contour thereof, said ribs being spaced from each other along the width of said shell to define a plurality of U-shaped channels, a second jaw member mounted for pivotal movement with respect to said first jaw member, hydraulically operated control members interconnecting said jaw members and defining means for controlling pivotal movement of said second jaw member from an open to a closed position, said second jaw member including a plurality of teeth that are relatively short and that are located remote from said hydraulically operated control members, said teeth being disposed in spaced-apart relation, and each of said teeth being aligned with a channel in said first jaw member for being received therein when said second jaw member is moved to a closed position, means connected to the rear of said shell and to said vehicle for effecting a lifting movement of said first jaw member and the second jaw member pivotally interconnected thereto, and means pivotally connected to the rear of said shell for tilting said first jaw member around a horizontal axis, said hydraulically operated control members being operable to pivotally move said second jaw member and the teeth joined thereto relative to said first jaw member downwardly in an arcuate path for effecting a demolition stroke, whereafter said second jaw member cooperates with said first jaw member to handle and transfer demolished material.
Claim 3
Dependent Claim 66 words
A demolition shovel as set forth in claim 1, said second jaw member including spaced end plates that are interconnected to said hydraulically operated control members, vertically spaced horizontal beams interconnecting the end plates, said relatively short teeth having a generally triangular configuration for strength and being mounted on the lower of the horizontal beams, wherein said teeth are rigidly fixed in position for demolition purposes.
Claim 4
Dependent Claim 31 words
A demolition shovel as set forth in claim 2, said ribs on said shell extending substantially from the top to the bottom edges thereof and further acting to rigidify said shell.
Claim 5
Dependent Claim 47 words
A demolition shoVel as set forth in claim 2, a plurality of ears joined to the upper of said beams, a plurality of bearings joined to the upper edge of said shell, and a shaft extending through said ears and bearings for pivotally interconnecting said jaw members.

References Cited (Backward Citations)

CA664486A Cited
US3260387A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-03-01 1974-08-31 1975-03-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-03-01 1978-08-31 1979-03-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-03-01 1982-08-31 1983-03-02 $7700.00 Window Closed / Lapsed

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