US3874532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excavators for digging trenches and the like
Assignee: Richier SA
•
Filing: 1972-06-14
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Granted: 1975-04-01
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Expires: 1992-06-14
Abstract
Abstract An excavator comprising a bucket-carrying arm articulated to a jib has a winch permanently mounted on the jib. The winch carries a lifting tackle-block via a cable entrained over a pulley mounted on the jib or arm.
Inventors
- 👤 Roger Metailler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:32
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/963; B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; E02F3/28; E02F3/30; E02F3/301; E02F3/32; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0364; B66C2700/0371; Y; Y10; Y10S; Y10S414/00; Y10S414/125
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
152 words
In an excavator, a jib member, a pivotal platform, first pivot means for articulating said jib to said platform, an arm member, second pivot means for articulating the arm member to the jib member at one end thereof, a bucket, third pivot means for articulating the bucket to the arm member at one end thereof, a winch mounted permanently on the jib member, a tackle-block, hoisting cable means, at least one pulley, the winch being connected to the tackleblock by the hoisting cable means which passes over the pulley, means for mounting the pulley exterior to one of said members positioned to permit unobstructed movement of said tackleblock, means for retaining the tackle-block in a stored condition, and wherein said arm member has at least one auxiliary axis transverse therewith intermediate the ends thereof and wherein said pulley mounting means comprise an extension positioned coaxial with said at least one auxiliary axis.
Claim 2
Dependent Claim
152 words
In an excavator, a jib member, a pivotal platform, first pivot means for articulating said jib to said platform, an arm member, second pivot means for articulating the arm member to the jib member at one end thereof, a bucket, third pivot means for articulating the bucket to the arm member at one end thereof, a winch mounted permanently on the jib member, a tackle-block, hoisting cable means, at least one pulley, the winch being connected to the tackleblock by the hoisting cable means which passes over the pulley, means for mounting the pulley exterior to one of said members positioned to permit unobstructed movement of said tackleblock, means for retaining the tackle-block in a stored condition, and wherein said arm member has at least one auxiliary axis transverse therewith intermediate the ends thereof and wherein said pulley mounting means comprise an extension positioned coaxial with said at least one auxiliary axis.
Claim 3
Dependent Claim
152 words
In an excavator, a jib member, a pivotal platform, first pivot means for articulating said jib to said platform, an arm member, second pivot means for articulating the arm member to the jib member at one end thereoF, a bucket, third pivot means for articulating the bucket to the arm member at one end thereof, a winch mounted permanently on the jib member, a tackle-block, hoisting cable means, at least one pulley, the winch being connected to the tackle-block by the hoisting cable means which passes over the pulley, means for mounting the pulley exterior to one of said members positioned to permit unobstructed movement of said tackle-block, means for retaining the tackle-block in a stored condition, and wherein said jib member has at least one auxiliary axis transverse therewith intermediate the ends thereof and wherein said pulley mounting means comprise an extension positioned coaxial with said at least one auxiliary axis.
Claim 4
Dependent Claim
152 words
In an excavator, a jib member, a pivotal platform, first pivot means for articulating said jib to said platform, an arm member, second pivot means for articulating the arm member to the jib member at one end thereoF, a bucket, third pivot means for articulating the bucket to the arm member at one end thereof, a winch mounted permanently on the jib member, a tackle-block, hoisting cable means, at least one pulley, the winch being connected to the tackle-block by the hoisting cable means which passes over the pulley, means for mounting the pulley exterior to one of said members positioned to permit unobstructed movement of said tackle-block, means for retaining the tackle-block in a stored condition, and wherein said jib member has at least one auxiliary axis transverse therewith intermediate the ends thereof and wherein said pulley mounting means comprise an extension positioned coaxial with said at least one auxiliary axis.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |