US3455599A - Overhead guard for materials handling trucks - Google Patents

Overhead guard for materials handling trucks Download PDF

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Publication number
US3455599A
US3455599A US701945A US3455599DA US3455599A US 3455599 A US3455599 A US 3455599A US 701945 A US701945 A US 701945A US 3455599D A US3455599D A US 3455599DA US 3455599 A US3455599 A US 3455599A
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United States
Prior art keywords
guard
truck
beams
overhead
overhead guard
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Expired - Lifetime
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US701945A
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English (en)
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Bernard B Becker
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07545—Overhead guards

Definitions

  • a typical materials handling truck is equipped with a forwardly projecting fork frame or other load handling device which is mounted for vertical movement on a telescopically extensible, tiltable mast structure located ahead of the operators station.
  • the truck may be used to transport materials held by the load engaging devices and to stack these materials vertically to various heights to which the fork frame can be elevated on the mast structure.
  • Some manufacturers have attempted to overcome this problem by constructing the guard so that the rear supporting members can be disconnected from and reconnected to the rear portion of the truck. Some embodiments also allow the guard to be tilted forward so as to provide even greater access to the battery compartment. However, even though these inventions are an improvement over guards which must be completely removed from the truck, they are still inconvenient and consume maintenance and operating time because they must be disconnected, tilted forward and back and reconnected.
  • guards are supported at only one end and can be tilted out of the way to provide vertical "ice access to truck components.
  • guards of this type offer the operator much less protection, since the guard is usually smaller in size and is unsupported at one end.
  • the hinged portion of the present invention also provides for maximum convenience. It is sufficiently heavy to remain firmly in the down position without having to be latched or bolted down. It is, however, not so heavy that it cannot be easily raised by one man.
  • the guard is still supported by four upright members; and the hinged portion is firmly supported at both ends.
  • FIG. 1 is a side view of a materials handling truck having mounted thereon an overhead guard structure which employs my invention.
  • FIG. 2 is a top plan view of the overhead guard structure shown in FIG. 1.
  • FIG. 3 is a sectional view taken on line 3-3 of FIG. 2.
  • FIG. 4 is a transverse sectional view taken on line 4-4 of FIG. 2.
  • FIG. 5 is a side view, partially broken away, showing the means of connecting thef ront supporting members to the overhead guard.
  • FIG. 6 is a sectional view taken on line 6-6 of FIG. 2.
  • FIG. 7 is a perspective view taken on the line 7-7 of FIG. 2.
  • a materials handling truck is indicated generally by the numeral 10.
  • the truck includes a body and frame portion 12 mounted upon rear steering wheels 14 and front drive wheels 16, a counterweight 18 usually made of metal and removably secured to the rear end of the truck, fork 19, and a mast structure 20 which is telescopically extensible and tiltable in forward or rearward directions by means of tilt piston cylinder assemblies 22.
  • An operators station includes a steering wheel 26, a seat 28, a cowl portion 30, and a plurality of control levers and pedals which enable the operator to control variously the motion of the truck and the tilt and elevation of the mast 20 and the up and down movement of fork 19.
  • An overhead guard 36 is supported by tubular rear supporting members 32 and tubular front supporting members 34.
  • hinged portion 54 The outer perimeter of hinged portion 54 is formed by two rectangular beams 56 and 58.
  • Beam 56 is bent at a right angle at 57 so as to form two sides'56 and 56 of the hinged portion.
  • Beam 58 is bent at an obtuse angle at 59 substantially the same as the angle 49 formed in tubular beam 48 to form two sides 58 and 58.
  • Side 58 is 1 parallel to side 56, and the other side 58 is parallel to beam 48.
  • Rectangular beams 60 are parallel to angles 40 and 42 and are welded to the parallel sides of beams 56 and 58.
  • Beams 62 are parallel to beams 46 and 47 and are welded to the other sides 56' and 58' of beams 56 and 58. Beams 60 and 62 are welded together at their points of crossing.
  • an overhead guard 36 which allows quick and easy access of a chain hoist to the battery compartment without sacrificing protection to the operator.
  • An overhead guard for material handling trucks of the type driven by batteries and an associated electric motor said guard being horizontal and supported at a height above the operators head by upwardly extending members mounted on the truck, said guard comprising an open lattice of crossing beams and having a hinged portion located directly above the battery compartment of the truck, a longitudinal solid beam extending from front to back intermediate the sides of said guard, a beam bordering a portion of one side of the guard and then bending at a substantial angle and running partially across the Width of the guard to a point abutting said longitudinal solid beam intermediate its ends, said hinged portion being supported by and upwardly swingable about said angularly disposed part of said bordering and bending beam to permit vertical access to said battery compartment without the necessity of totally or partially disconnecting the guard from the truck.
  • the overhead guard as set forth in claim 1 further characterized by solid rectangular lattice beams running parallel to the longitudinal axis of the guard and still other rectangular lattice beams running parallel to the transverse axis of the guard and at right angles to the said'longitudinal lattice beams, said lattice beams being welded together at their points of crossing or abutting.
  • the overhead guard as set forth in claim 1 further characterized in that all of the supporting members are tubular, one side member of said guard is tubular for the full length of the guard, the bordering and bending beam is tubular, said guard including from and rear transverse members in the form of angles and all the remaining members of the guard including the hinged portion are solid beams some extending longitudinally and some extending transversely and welded to each other where they cross or abut, and the ends of said intermediate longitudinally extending solid beam rest on said angles, the rear of said hinged portion when in closed position resting on the said rear angle and the front ends of all longitudinal beams other than those in the hinged portion resting on said front angle.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Forklifts And Lifting Vehicles (AREA)
US701945A 1968-01-31 1968-01-31 Overhead guard for materials handling trucks Expired - Lifetime US3455599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70194568A 1968-01-31 1968-01-31

Publications (1)

Publication Number Publication Date
US3455599A true US3455599A (en) 1969-07-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
US701945A Expired - Lifetime US3455599A (en) 1968-01-31 1968-01-31 Overhead guard for materials handling trucks

Country Status (4)

Country Link
US (1) US3455599A (enrdf_load_stackoverflow)
DE (1) DE1902035A1 (enrdf_load_stackoverflow)
FR (1) FR1598093A (enrdf_load_stackoverflow)
GB (1) GB1228346A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2088347A1 (enrdf_load_stackoverflow) * 1970-05-05 1972-01-07 Clark Equipment Co
JPS5219814U (enrdf_load_stackoverflow) * 1975-07-29 1977-02-12
US4023838A (en) * 1976-06-17 1977-05-17 Towmotor Corporation Work vehicle protective cover
US4026597A (en) * 1975-12-22 1977-05-31 Towmotor Corporation Collapsible overhead guard
US4079985A (en) * 1975-03-03 1978-03-21 Martin Robert P Cab for industrial truck
US4102537A (en) * 1976-06-18 1978-07-25 Kubota Ltd. Seated-operator type tractor
US4205874A (en) * 1978-01-13 1980-06-03 Martin Robert P High-low profile guard
US4585268A (en) * 1984-10-15 1986-04-29 Allis-Chalmers Corporation Overhead guard for lift trucks of different lengths
US6322133B1 (en) * 1999-11-12 2001-11-27 Ingersoll-Rand Company Falling object protective apparatus for an industrial vehicle
US20060273566A1 (en) * 2003-05-22 2006-12-07 Eugen Hepner Military motor vehicle for transporting personnel
US20110266845A1 (en) * 2009-01-05 2011-11-03 Neal Marshall Seating apparatus for use on a vehicle having a flat carrying area

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911232A (en) * 1957-04-22 1959-11-03 Clark Equipment Co Overhead guard for industrial lift truck
US3289871A (en) * 1963-12-09 1966-12-06 Clark Equipment Co Method and means providing overhead protection and access to industrial trucks

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911232A (en) * 1957-04-22 1959-11-03 Clark Equipment Co Overhead guard for industrial lift truck
US3289871A (en) * 1963-12-09 1966-12-06 Clark Equipment Co Method and means providing overhead protection and access to industrial trucks

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2088347A1 (enrdf_load_stackoverflow) * 1970-05-05 1972-01-07 Clark Equipment Co
US4079985A (en) * 1975-03-03 1978-03-21 Martin Robert P Cab for industrial truck
JPS5219814U (enrdf_load_stackoverflow) * 1975-07-29 1977-02-12
US4026597A (en) * 1975-12-22 1977-05-31 Towmotor Corporation Collapsible overhead guard
US4023838A (en) * 1976-06-17 1977-05-17 Towmotor Corporation Work vehicle protective cover
US4102537A (en) * 1976-06-18 1978-07-25 Kubota Ltd. Seated-operator type tractor
US4205874A (en) * 1978-01-13 1980-06-03 Martin Robert P High-low profile guard
US4585268A (en) * 1984-10-15 1986-04-29 Allis-Chalmers Corporation Overhead guard for lift trucks of different lengths
US6322133B1 (en) * 1999-11-12 2001-11-27 Ingersoll-Rand Company Falling object protective apparatus for an industrial vehicle
US20060273566A1 (en) * 2003-05-22 2006-12-07 Eugen Hepner Military motor vehicle for transporting personnel
US7464963B2 (en) * 2003-05-22 2008-12-16 Krauss-Maffei Wegmann Gmbh & Co. Kg Military motor vehicle for transporting personnel
US20110266845A1 (en) * 2009-01-05 2011-11-03 Neal Marshall Seating apparatus for use on a vehicle having a flat carrying area

Also Published As

Publication number Publication date
GB1228346A (enrdf_load_stackoverflow) 1971-04-15
FR1598093A (enrdf_load_stackoverflow) 1970-06-29
DE1902035A1 (de) 1969-08-28

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