US3807802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demolition machine
Assignee: Individual
•
Filing: 1972-09-29
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Granted: 1974-04-30
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Expires: 1992-09-29
Abstract
Abstract A demolition machine comprising a high-lift machine, a bucket or support pivotally mounted on a boom structure of said high-lift machine, means on said high-lift machine for elevating and tilting said bucket or support, a boom structure rigidly secured to said bucket or support and extending forwardly of said highlift machine, and a wrecking implement rigidly secured to the outward end of said boom structure for elevating and tilting with said bucket or support.
Inventors
- 👤 D Betters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:01
CPC Classifications
E; E04; E04G; E04G23/00; E04G23/08; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/962
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
Demolition apparatus comprising a high-lift machine, a bucket or other implement pivotally mounted on a boom arrangement of said high-lift machine, means on said high-lift machine for elevating and tilting said bucket or implement, a boom structure rigidly but detachably secured solely to substantially flat surface means of said bucket or implement and extending in cantilevered fashion forwardly of said bucket or implement and of said high-lift machine, and a wrecking tool rigidly secured to the outward end of said boom structure for elevating and tilting movements of said boom structure and said tool with said bucket or implement.
Claim 2
Dependent Claim
99 words
Demolition apparatus comprising a high-lift machine, a bucket or other implement pivotally mounted on a boom arrangement of said high-lift machine, means on said high-lift machine for elevating and tilting said bucket or implement, a boom structure rigidly but detachably secured solely to substantially flat surface means of said bucket or implement and extending in cantilevered fashion forwardly of said bucket or implement and of said high-lift machine, and a wrecking tool rigidly secured to the outward end of said boom structure for elevating and tilting movements of said boom structure and said tool with said bucket or implement.
Claim 3
Dependent Claim
37 words
The combination according to claim 1 wherein said boom structure is extensible and includes a pair of telescoping boom sections, and means for longitudinally moving one of said boom sections relative to the other of said sections.
Claim 4
Dependent Claim
51 words
The combination according to claim 1 wherein a number of wrecking tools of differing configurations are provided for said demolition apparatus, each of said tools having a similarly shaped supporting shaft, and means for detachably joining a selected one of said tools through its shaft to said boom structure for interchangeability.
Claim 5
Dependent Claim
75 words
The combination according to claim 1 wherein said wrecking tool is joined to said boom structure outward end by symmetrical insert and recess portions on said implement and said boom structure, and means are provided for so joining said tool to said boom structure, said insert and recess portions and said joining means being shaped such that said tool can be mounted in positions generally at right angles to one another on said boom structure.
Claim 6
Dependent Claim
28 words
The combination according to claim 1 wherein said wrecking tool includes a plurality of pointed members spacedly joined to a cross-piece supporting member forming part of said tool.
Claim 7
Dependent Claim
100 words
The combination according to claim 1 wherein said flat surface means of the bucket or implement include a socket member substantially permanently secured to said bucket or implement so that said socket member undergoes all movements imparted to said bucket or implement by said boom arrangement, said socket member being shaped to receive detachably the adjacent end portion of said boom structure, and fastening means for detachably securing said boom structure end portion within said socket member, said socket member being shaped for closely receiving said adjacent boom structure end portion and for supporting said boom structure in cantilevered fashion.
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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |