US3554396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Front end loader
Assignee: Individual
•
Filing: 1968-04-11
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Granted: 1971-01-12
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Expires: 1988-04-11
Abstract
Abstract A detachable front end loader having a rigid frame comprised of a horizontal U-shaped yoke and vertical rigid posts extending upwardly from the ends of the yoke side members. The usual arms carrying a pivoted bucket at the front end are pivotally mounted at the upper ends of the vertical posts. Hydraulic cylinder piston assemblies actuate the arms and bucket. When not is use, the loader rests with the transverse member of the yoke on the ground and the side members extending upwardly. The tractor''s front end, equipped with a pair of outwardly extending, horizontal pins, is driven between the side members so they contact the pins. By a combination of contracting the front cylinder piston assemblies and driving the tractor ahead, the loader can be pivoted around the front pins and slid into operating position supported on front and rear side pins carried by the tractor. Means for locking the loader in place are provided.
Inventors
- 👤 Eugene Demkiw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:53
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/968; E02F3/627; E02F3/6273
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
391 words
The self-mounting tool-carrying implement for tractors which comprises: a pair of boom-supporting uprights arranged in transversely-spaced substantially coplanar relationship for attachment to the sides of a tractor; forwardly-extending boom means having the rear end thereof attached to the uprights for pivotal movement about a transverse axis between an extended and a retracted position; tool means mounted on the forward end of the boom means adapted to support the front end of the implement while attaching the rear end thereof to a tractor; a pair of elongate support members rigidly attached adjacent their rear ends to the uprights in transversely-spaced substantially coplanar relation to one another, said support member cooperating with the tool means to support the implement in free-standing position when demounted from the tractor, and said support members cooperating with the uprights and the tractor when attached to the sides of the latter to define a mobile base for the boom and tool means; servomotor means connected between the boom means and base therefor, said servomotor means being operative upon actuation with the rear end of the implement mounted upon a tractor to raise and lower the tool means, and said servomotor means being operative upon actuation with the implement demounted and the tractor supporting the rear end thereof to raise the support members off the ground into a substantially horizontal position; and, implement mounting means mountable on the tractor for releasably fastening the implement thereto and supporting the rear end of the latter while being connected, said mounting means including two-part connecting means and guide means, said connecting means having one part carried on the rear end of the implement and the other part adapted to be mounted on the sides of the tractor in position to engage said first-mentioned part upon forward movement of said tractor between the support members with the latter supported in substantially horizontal position, said guide means being mountable on the sides of the tractor in position to engage the support members upon forward movement of the tractor therebetween, and said guide means being spaced forwardly of said tractor-mounted connecting means part a distance such that it cooperates therewith to prevent the implement from falling forward while remaining in position relative to the center of mass of said implement so as to constitute the sole support for the rear end thereof until completely mounted.
Claim 2
Dependent Claim
391 words
The self-mounting tool-carrying implement for tractors which comprises: a pair of boom-supporting uprights arranged in transversely-spaced substantially coplanar relationship for attachment to the sides of a tractor; forwardly-extending boom means having the rear end thereof attached to the uprights for pivotal movement about a transverse axis between an extended and a retracted position; tool means mounted on the forward end of the boom means adapted to support the front end of the implement while attaching the rear end thereof to a tractor; a pair of elongate support members rigidly attached adjacent their rear ends to the uprights in transversely-spaced substantially coplanar relation to one another, said support member cooperating with the tool means to support the implement in free-standing position when demounted from the tractor, and said support members cooperating with the uprights and the tractor when attached to the sides of the latter to define a mobile base for the boom and tool means; servomotor means connected between the boom means and base therefor, said servomotor means being operative upon actuation with the rear end of the implement mounted upon a tractor to raise and lower the tool means, and said servomotor means being operative upon actuation with the implement demounted and the tractor supporting the rear end thereof to raise the support members off the ground into a substantially horizontal position; and, implement mounting means mountable on the tractor for releasably fastening the implement thereto and supporting the rear end of the latter while being connected, said mounting means including two-part connecting means and guide means, said connecting means having one part carried on the rear end of the implement and the other part adapted to be mounted on the sides of the tractor in position to engage said first-mentioned part upon forward movement of said tractor between the support members with the latter supported in substantially horizontal position, said guide means being mountable on the sides of the tractor in position to engage the support members upon forward movement of the tractor therebetween, and said guide means being spaced forwardly of said tractor-mounted connecting means part a distance such that it cooperates therewith to prevent the implement from falling forward while remaining in position relative to the center of mass of said implement so as to constitute the sole support for the rear end thereof until completely mounted.
Claim 3
Dependent Claim
342 words
In combination: a tractor having a driver compartment located at the rear end thereof forwardly of the rear axle; a pair of boom-supporting uprights arranged in substantially coplanar relation and transversely-spaced for attachment on opposite sides of the tractor forwardly of the driver''s compartment; forwardly-extending boom means having the rear end thereof connected to the uprights for pivotal movement about a transverse axis between an extended and a retracted position; tool means mounted on the front end of the boom means; a pair of elongate support members having their rear extremities rigidly connected to the uprights in position to projeCt forwardly therefrom in substantially coplanar relation to one another, said support members cooperating with the uprights to define a base for the boom and tool means when mounted on the tractor, and said base cooperating with the tool means to support said boom means in free-standing position when demounted from the tractor; servomotor means connected between the base and boom means operative upon actuation to move same relative to one another between their extended and retracted positions; two-part connecting means having one part carried by the rear extremity of the base and the other part mounted on opposite sides of the tractor forwardly of the driver compartment, said parts being positioned and adapted to engage one another and cooperate to form a releasable connection upon forward movement of the tractor between the support members with the latter supported in retracted position; and, guide means mounted on the sides of the tractor ahead of the tractor-mounted connecting means part in position to engage and lift the support members free of the ground upon forward movement of the tractor therebetween, said guide means cooperating with the tool means to support the boom means while the base is being connected to the tractor, and said guide means cooperating with the connecting means to support the base on the tractor in cantilever fashion so as to enable the tool means to be lifted free of the ground upon actuation of the servomotor means into extended position.
Claim 4
Dependent Claim
342 words
In combination: a tractor having a driver compartment located at the rear end thereof forwardly of the rear axle; a pair of boom-supporting uprights arranged in substantially coplanar relation and transversely-spaced for attachment on opposite sides of the tractor forwardly of the driver''s compartment; forwardly-extending boom means having the rear end thereof connected to the uprights for pivotal movement about a transverse axis between an extended and a retracted position; tool means mounted on the front end of the boom means; a pair of elongate support members having their rear extremities rigidly connected to the uprights in position to projeCt forwardly therefrom in substantially coplanar relation to one another, said support members cooperating with the uprights to define a base for the boom and tool means when mounted on the tractor, and said base cooperating with the tool means to support said boom means in free-standing position when demounted from the tractor; servomotor means connected between the base and boom means operative upon actuation to move same relative to one another between their extended and retracted positions; two-part connecting means having one part carried by the rear extremity of the base and the other part mounted on opposite sides of the tractor forwardly of the driver compartment, said parts being positioned and adapted to engage one another and cooperate to form a releasable connection upon forward movement of the tractor between the support members with the latter supported in retracted position; and, guide means mounted on the sides of the tractor ahead of the tractor-mounted connecting means part in position to engage and lift the support members free of the ground upon forward movement of the tractor therebetween, said guide means cooperating with the tool means to support the boom means while the base is being connected to the tractor, and said guide means cooperating with the connecting means to support the base on the tractor in cantilever fashion so as to enable the tool means to be lifted free of the ground upon actuation of the servomotor means into extended position.
Claim 5
Dependent Claim
227 words
The improved method for mounting a free-standing tool-carrying implement on a tractor when said implement includes a boom, a tool at the front end of the boom adapted to support the latter, a pair of transversely spaced uprights with support members projecting forwardly therefrom cooperating to define a base pivotally attached to the rear end of the boom and cooperating with the tool to support said implement in free-standing position, servomotor means interconnecting the boom and base operative upon actuation to move same relative to one another between extended and retracted positions, and connecting means carried by said base and tractor adapted to form a releasable connection therebetween when said tractor is positioned between said support members with the latter supported in retracted position, which includes the steps of: continually and exclusively supporting the rear end of the implement with the front end of the tractor until the support members can be raised free of the ground into retracted position and said tractor moved forwardly therebetween to complete the connection, and thereafter carrying both the front and rear ends of the implement in cantilever fashion upon the front end of the tractor by supporting the base therewith at longitudinally spaced points located behind said implement''s center of mass so that the tool can be lifted free of the ground upon actuation of the servomotor into extended position.
Claim 6
Dependent Claim
227 words
The improved method for mounting a free-standing tool-carrying implement on a tractor when said implement includes a boom, a tool at the front end of the boom adapted to support the latter, a pair of transversely spaced uprights with support members projecting forwardly therefrom cooperating to define a base pivotally attached to the rear end of the boom and cooperating with the tool to support said implement in free-standing position, servomotor means interconnecting the boom and base operative upon actuation to move same relative to one another between extended and retracted positions, and connecting means carried by said base and tractor adapted to form a releasable connection therebetween when said tractor is positioned between said support members with the latter supported in retracted position, which includes the steps of: continually and exclusively supporting the rear end of the implement with the front end of the tractor until the support members can be raised free of the ground into retracted position and said tractor moved forwardly therebetween to complete the connection, and thereafter carrying both the front and rear ends of the implement in cantilever fashion upon the front end of the tractor by supporting the base therewith at longitudinally spaced points located behind said implement''s center of mass so that the tool can be lifted free of the ground upon actuation of the servomotor into extended position.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |