US4403906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material handling apparatus
Assignee: Individual
•
Filing: 1981-11-12
•
Granted: 1983-09-13
•
Expires: 2001-11-12
Abstract
Abstract Apparatus for use on a front-end loader bucket including a telescopically-extendable clamp arm operating in conjunction with a solid link.
Inventors
- 👤 Vaino J. Holopainen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:32
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/402; E02F3/404; Y; Y10; Y10S; Y10S414/00; Y10S414/125
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
Material handling apparatus for use on a pivoted bucket, comprising: (a) a bracket mounted on an upper edge of the bucket, (b) a clamp arm mounted on the bucket for pivotal movement about one end, the clamp arm consisting of two telescoping parts, one of said parts being pivotally connected at a first point to said bracket, (c) a first hydraulic actuator located in the arm to produce telescoping movement between the parts, and (d) a rigid non-extendable link pivotally connected at one end to the other of said parts and pivotally connected at its opposite end to the bracket at a second point which is spaced from said first point.
Claim 2
Dependent Claim
111 words
Material handling apparatus for use on a pivoted bucket, comprising: (a) a bracket mounted on an upper edge of the bucket, (b) a clamp arm mounted on the bucket for pivotal movement about one end, the clamp arm consisting of two telescoping parts, one of said parts being pivotally connected at a first point to said bracket, (c) a first hydraulic actuator located in the arm to produce telescoping movement between the parts, and (d) a rigid non-extendable link pivotally connected at one end to the other of said parts and pivotally connected at its opposite end to the bracket at a second point which is spaced from said first point.
Claim 3
Dependent Claim
49 words
Material handling apparatus as recited in claim 1, wherein the bracket consists of two portions, one portion of which is fixed to the bucket and the other portion of which is pivotally connected to the said one portion and to which the clamp arm and the link are connected.
Claim 4
Dependent Claim
27 words
Material handling apparatus as recited in claim 2, wherein a second hydraulic actuator joins the two portions of the bracket to bring about pivoted movement between them.
Claim 5
Dependent Claim
98 words
Material handling apparatus as recited in claim 3, wherein the bucket has a horizontal operating edge and is mounted on a vehicle frame for pivotal movement about a first axis parallel to the operating edge, wherein the clamp arm is mounted on the said other portion of the bracket for swinging movement relative to the said one portion of the bracket from a storage position in which the clamp arm extends along the outer surface of the bracket parallel to said operating edge to an operating position in which the clamp arm extends perpendicular to said operating edge.
Claim 6
Dependent Claim
55 words
Material handling apparatus as recited in claim 4, wherein hydraulic hoses are connected to the clamp arm to energize the first hydraulic actuator to cause the clamp arm to move about its connection to the said other portion of the bracket toward said operating edge for clamping and away from said operating edge for unclamping.
Claim 7
Dependent Claim
64 words
Material handling apparatus as recited in claim 5, wherein the pivoted connection of the said one portion of the bracket to the other portion being operative about an axis that is perpendicular to the operating edge, and wherein the connection of the clamp arm to the said other portion of the bracket is operative about an axis that is parallel to the operating edge.
Claim 8
Dependent Claim
40 words
Material handling apparatus as recited in claim 6, wherein the second hydraulic actuator causes the clamp arm to move from storage position to operating position when it brings about the said pivoted movement between the two portions of the bracket.
References Cited (Backward Citations)
US2717704A
Cited
US2768760A
Cited
US3057496A
Cited
US3061123A
Cited
US3042235A
Cited
US3067888A
Cited
US3148787A
Cited
US3273729A
Cited
US3451575A
Cited
US4187049A
Cited
US4155473A
Cited
US4200423A
Cited
US4264265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |