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Publication numberUS3734329 A
Publication typeGrant
Publication dateMay 22, 1973
Filing dateMar 6, 1972
Priority dateMar 6, 1972
Publication numberUS 3734329 A, US 3734329A, US-A-3734329, US3734329 A, US3734329A
InventorsGrelck L
Original AssigneeGrelck L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fork lift truck tines
US 3734329 A
Abstract
Each of a pair of auxiliary members is pivotally mounted in a channel formed at the free end of a corresponding one of the pair of lift members of a fork lift truck for movement in planes substantially perpendicular to the plane of the lift members. Control devices on the lift members position the auxiliary members in a selected one of a position coplanar with the lift members, a position extending above the plane of the lift members substantially perpendicularly thereto and a position extending below the plane of the lift members substantially perpendicularly thereto.
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Description  (OCR text may contain errors)

United States Patent [191 Grelck 11 3,734,329 51 May 22, 1973 [54] FORK LIFT TRUCK TINES [76] Inventor: Leonard Grelck, l2/37 E. Rosencrans Avenue, Space No. 35, Norwalk,Califi 22 Filed: Mar. 6, 1972 211 Appl.No.:232,008

[52] US. Cl ..214/750 [51] Int. Cl. ..B66f 9/06 [58] Fieid of Search ..2l4/514, 750; 254/133 R, 134 R; 198/224 [56] References Cited UNITED STATES PATENTS 3,039,635 6/1962 Prackett et al. ..2l4/5 14 3,459,319 8/1969 Ulin v.214/516 Primary Examiner-Gerald M. Forlenza Assistant Examiner-Lawrence J. Oresky AttameyDaniel Jay Tick [57] ABSTRACT Each of a pair of auxiliary members is pivotally mounted in a channel formed at the free end of a corresponding one of the pair of lift members of a fork lift truck for movement in planes substantially perpendicular to the plane of the lift members. Control devices on the lift members position the auxiliary members in a selected one of a position coplanar with the lift members, a position extending above the plane of the lift members substantially perpendicularly thereto and a position extending below the plane of the lift members substantially perpendicularly thereto.

2 Claims, 6 Drawing Figures FORK LIFT TRUCK TINES DESCRIPTION OF THE INVENTION The present invention relates to a fork lift truck.

More particularly, the invention relates to the tines of a fork lift truck.

The principal object of the invention is to provide new and improved tines for fork lift trucks which permit normal lifting operation, pushing and pulling, as desired, with facility.

In order that the invention may be readily carried into effect, it will now be described with reference to the accompanying drawing, wherein:

FIG. 1 is a perspective view of the front of a fork lift truck having an embodiment of the tines of the inventron;

FIGS. 2a, 2b and 2c are schematic diagrams of the tines of the invention in different positions;

FIG. 3 is a perspective view of part of an embodiment of the tine of the invention; and

FIG. 4 is a view, partly in section, taken along the lines 4--4, of FIG. 3.

In the figures, the same components are identified by the same reference numerals.

In FIG. 1, a fork lift truck 1 of any suitable type has a pair of spaced substantially parallel, substantially coplanarly positioned tines or lift members 2 and 3. Each of the lift members or tines 2 and 3 has a free end 4 and 5, respectively, (FIGS. 1 to 3).

The free end 4 of the tine 2 has a longitudinally extending channel 6 formed therein and opening on said free end (FIG. 1). The free end 5 of the tine 3 has a Ion gitudinally extending channel 7 formed therein and opening on said free end (FIGS. 1, 3 and 4).

An auxiliary member is pivotally mounted in the channel of each of the lift members or tines 2 and 3, although only the tine 3 is described hereinafter. Both tines 2 and 3 are substantially identical. An auxiliary member 8 is pivotally mounted in the channel 7 of the lift member 3 (FIGS. 2b, 2c, 3 and 4) for movement in a plane substantially perpendicular to the plane of the lift members 2 and 3.

Each of the tines 2 and 3 has a control device thereon for positioning the corresponding auxiliary member, although only that of the tine 3 is described herein. The

tine 3 has a control device 9 thereon (FIG. 3) for positioning the auxiliary member 8 in a selected desired position. The control device 9 may comprise any suitable driving device such as, for example, hydraulic, electromagnetic, mechanical, or the like, means.

The control device 9 positions the auxiliary member 8 in a position coplanar with the lift members 2 and 3, as shown in FIGS. 20, 3 and 4. The control device 9 rotates the auxiliary member 8 in a clockwise direction to a position extending above the plane of the lift members 2 and 3 substantially perpendicularly thereto, as shown in FIG. 2b. In this position of the auxiliary members, the fork lift truck may pull a pallet load.

The control device 9 rotates the auxiliary member 8 in a counterclockwise direction to a position extending below the plane of the lift members 2 and 3 substantially perpendicular thereto, as shown in FIG. 2c. In this position of the auxiliary members, the fork lift truck may push a load. Each time the control device 9 moves the auxiliary member 8, the control device of the tine 2 moves the auxiliary member 8 said tine to the same position.

I claim:

1. The tines of a fork lift truck, comprising a pair of spaced substantially parallel, substantially coplanarly positioned lift members, each having a free end having a longitudinally extending channel formed therein and opening on the free end;

a pair of auxiliary members each member being pivotally mounted at one end in the channel of a corresponding one of the lift members for movement in planes substantially perpendicular to the plane of the lift members; and

control means on the lift members for positioning the auxiliary members in a selected one of a position coplanar with the lift members, a position extending above the plane of the lift members substantially perpendicularly thereto and a position extending below the plane of the lift members substantially perpendicularly thereto.

2. Times as claimed in claim 1, wherein the control means rotates the auxiliary members in a selected one of a clockwise and counterclockwise direction.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3039635 *Nov 26, 1957Jun 19, 1962Clark Equipment CoAttachment for lift truck
US3459319 *Jun 23, 1967Aug 5, 1969Trapco AbReloading mechanism on road transport vehicles for standard loads
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4023695 *Jun 20, 1975May 17, 1977Carew Victor EMobile stacker with a work station thereon
US4497606 *Jul 19, 1982Feb 5, 1985Hobson Lloyd LFork lift truck attachment
US5252023 *Feb 10, 1992Oct 12, 1993Kelly Kevin MLifting apparatus
US5664932 *Sep 20, 1994Sep 9, 1997Long-Airdox CompanyPivoted lifting device
US5855467 *Jan 8, 1997Jan 5, 1999Long-Airdox CompanyPivot locking device
US6113342 *Aug 12, 1998Sep 5, 2000Long-Airdox CompanySelf-aligning battery changing system for electric battery-powered vehicles
US20120211308 *Oct 23, 2010Aug 23, 2012Eric IssartelFork for handling equipment
US20130223962 *Feb 24, 2012Aug 29, 2013Coca-Cola Bottling Co. United, Inc.Pallet transportation assembly and processes of transporting pallets using the same
DE3731111A1 *Sep 16, 1987Mar 30, 1989Heinz Dipl Ing SelterMechanical support device
DE10256411B3 *Dec 2, 2002Apr 1, 2004Daimlerchrysler AgMaterial handling equipment used as palette truck or a forklift truck comprises a fork carrier moving in the vertical direction and a trailer arranged on a platform assigned to the fork carrier
DE10310669A1 *Mar 12, 2003Sep 30, 2004Jungheinrich AgFloor conveyor with fork lift has support elements movable by operating device between rest position underneath forked tines and supporting position for load above top side of tines
DE10310669B4 *Mar 12, 2003Feb 22, 2007Jungheinrich AgFlurförderzeug mit Lastgabel
DE102009016948A1 *Apr 9, 2009Nov 11, 2010Peter BeckerFork arm for use in forklift truck for securing load to be transported, has safety bolt for securing load to be transported, load lever embedded in arm, and screw mechanism for positioning safety bolt
DE102011111508A1 *Aug 31, 2011Feb 28, 2013Domnick + Müller GmbH & Co. KGFork tine for forklift, has main portion that is arranged in erected state to form estimation on upper side, and stop lever that is pneumatically activated
DE102012010601A1 *May 30, 2012Dec 5, 2013Domnick + Müller GmbH & Co. KGFork rake for forklift, has electromagnetically actuatable hinged stop lever arranged at certain distance to base end and protruding in set-up state for formation of pallet stopper over top surface of fork rake
EP2767501A1 *Feb 7, 2014Aug 20, 2014Vetter Umformtechnik GmbHLoad bearing device
Classifications
U.S. Classification414/785
International ClassificationB66F9/12
Cooperative ClassificationB66F9/12, B62B2203/29
European ClassificationB66F9/12