US4154349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excavating implement stabilizer
Assignee: International Motors LLC
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Filing: 1977-11-03
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Granted: 1979-05-15
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Expires: 1997-11-03
Abstract
Abstract A loader bucket is provided with a plurality of leaf springs appended to the bucket for interaction with the bucket support linkage. The leaf springs impose forces on the bucket link pins preventing undesirable movement between the bucket and the support linkage when the bucket is rolled into a load transporting position.
Inventors
- 👤 Robert B. Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:19
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/401
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
237 words
A stabilizer for attachment to the back side of an excavating implement, namely a bucket pivotally carried on a boom, said stabilizer comprising: a bar having a plurality of threaded apertures therein, said bar being generally rectangular in shape with a length several times greater than its width and further having the bottom end portions chamfered; a spacing block having a plurality of apertures aligned with said threaded apertures of said bar, said spacing block positioned on top of said bar; an inner leaf spring having a plurality of apertures aligned with said apertures of said spacing block at one end of said inner leaf spring, said inner leaf spring positioned on top of said spacing block; a contact leaf spring having a plurality of apertures aligned with said apertures of said inner leaf spring at one end thereof, said contact leaf spring longer than said inner leaf spring and having a curved end portion at a non-apertured end thereof, said contact leaf spring positioned on top of said inner leaf spring; a top block having a plurality of apertures aligned with said apertures of said contact leaf spring, said top block positioned on top of said contact leaf spring; a plurality of threaded fasteners passing through said apertures of said top block, both of said leaf springs, said spacing block and being threadably engaged with said bar, whereby said stabilizer is unified into a unified structure.
Claim 2
Dependent Claim
237 words
A stabilizer for attachment to the back side of an excavating implement, namely a bucket pivotally carried on a boom, said stabilizer comprising: a bar having a plurality of threaded apertures therein, said bar being generally rectangular in shape with a length several times greater than its width and further having the bottom end portions chamfered; a spacing block having a plurality of apertures aligned with said threaded apertures of said bar, said spacing block positioned on top of said bar; an inner leaf spring having a plurality of apertures aligned with said apertures of said spacing block at one end of said inner leaf spring, said inner leaf spring positioned on top of said spacing block; a contact leaf spring having a plurality of apertures aligned with said apertures of said inner leaf spring at one end thereof, said contact leaf spring longer than said inner leaf spring and having a curved end portion at a non-apertured end thereof, said contact leaf spring positioned on top of said inner leaf spring; a top block having a plurality of apertures aligned with said apertures of said contact leaf spring, said top block positioned on top of said contact leaf spring; a plurality of threaded fasteners passing through said apertures of said top block, both of said leaf springs, said spacing block and being threadably engaged with said bar, whereby said stabilizer is unified into a unified structure.
Claim 3
Dependent Claim
221 words
In an excavating assembly having a forward extending boom to which an excavating bucket is pivotally attached at a bucket mount pivot point and is provided with actuation mechanisms for pivoting said excavating bucket around said bucket mount pivot point toward said boom, an excavating bucket stabilizer said bucket when it is pivoted back toward said boom to a point where said stabilizer contacts said boom, said stabilizer comprising: a bar having a plurality of threaded apertures therein, said bar fixedly attached to the back side of said bucket; a spacing block having a plurality of apertures therethrough alignable with said threaded apertures of said bar said spacing block positioned on top of said bar; a contact leaf spring having a plurality of apertures therethrough alignable with said apertures of said spacing block, said contact leaf spring contacting said boom when said bucket is pivoted toward said boom back around said bucket mount pivot point; a top block having a plurality of apertures alignable with said apertures of said contact leaf spring, said top block positioned on top of said contact leaf spring; a plurality of threaded fasteners passing through said apertures of said top block, said contact leaf spring, said spacing block and into said threaded apertures of said bar whereby said excavating bucket stabilizer is attached to said bucket.
Claim 4
Dependent Claim
221 words
In an excavating assembly having a forward extending boom to which an excavating bucket is pivotally attached at a bucket mount pivot point and is provided with actuation mechanisms for pivoting said excavating bucket around said bucket mount pivot point toward said boom, an excavating bucket stabilizer said bucket when it is pivoted back toward said boom to a point where said stabilizer contacts said boom, said stabilizer comprising: a bar having a plurality of threaded apertures therein, said bar fixedly attached to the back side of said bucket; a spacing block having a plurality of apertures therethrough alignable with said threaded apertures of said bar said spacing block positioned on top of said bar; a contact leaf spring having a plurality of apertures therethrough alignable with said apertures of said spacing block, said contact leaf spring contacting said boom when said bucket is pivoted toward said boom back around said bucket mount pivot point; a top block having a plurality of apertures alignable with said apertures of said contact leaf spring, said top block positioned on top of said contact leaf spring; a plurality of threaded fasteners passing through said apertures of said top block, said contact leaf spring, said spacing block and into said threaded apertures of said bar whereby said excavating bucket stabilizer is attached to said bucket.
Claim 5
Dependent Claim
33 words
The invention in accordance with claim 2 wherein said contact leaf spring is provided with a curved end portion at one end thereof and said apertures are clustered at the other end thereof.
Claim 6
Dependent Claim
49 words
The invention in accordance with claim 2 wherein said bar is an elongated rectangular plate having a length several times greater than its width arranged such that the longitudinal dimension is perpendicular to the longitudinal dimension of said contact leaf spring and further having the bottom end portions chamfered.
Claim 7
Dependent Claim
29 words
The invention in accordance with claim 2 wherein four screw type fasteners are provided to maintain said bar, spacing block, leaf spring and top block of said stabilizer together.
Claim 8
Dependent Claim
165 words
An excavating bucket for pivotable mounting on a boom, said bucket, having a flat floor portion with a leading edge, a curved back wall portion integral with said floor portion, said back wall portion extending upwardly to a top portion, a pair of bucket side walls extending vertically from said flat floor portion to said top portion, a bucket support extending transversely along said top portion of said bucket and attached to each of said pair of side walls, a pair of boom attachment flange means, each of said pair including an inboard and an outboard flange having bucket mount pivot point means at the lower end thereof, the improvement comprising: each attachment flange means having a stabilizer fixed to said bucket support between said inboard and outboard flanges of said bucket said stabilizer having a curved leaf spring extending longitudinally from said bucket support toward said bucket mount pivot point means while being laterally located between planes defined by said inboard and outboard flanges.
Claim 9
Dependent Claim
165 words
An excavating bucket for pivotable mounting on a boom, said bucket, having a flat floor portion with a leading edge, a curved back wall portion integral with said floor portion, said back wall portion extending upwardly to a top portion, a pair of bucket side walls extending vertically from said flat floor portion to said top portion, a bucket support extending transversely along said top portion of said bucket and attached to each of said pair of side walls, a pair of boom attachment flange means, each of said pair including an inboard and an outboard flange having bucket mount pivot point means at the lower end thereof, the improvement comprising: each attachment flange means having a stabilizer fixed to said bucket support between said inboard and outboard flanges of said bucket said stabilizer having a curved leaf spring extending longitudinally from said bucket support toward said bucket mount pivot point means while being laterally located between planes defined by said inboard and outboard flanges.
Claim 10
Dependent Claim
38 words
The invention in accordance with claim 6 wherein said stabilizers may contact said boom when said bucket is attached through said bucket mount pivot point means to said boom and said bucket is pivoted back toward said boom.
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) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |