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US3762761A Expired / Lapsed US ⏱️ 0.0 years remaining

Lift truck

Assignee: Doosan Bobcat North America Inc
•
Filing: 1971-04-26
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Granted: 1973-10-02
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Expires: 1991-04-26
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Abstract

Abstract An overhead guard and battery tray assembly for lift trucks in which the overhead guard extends over the operator''s station and in upright side view is of a generally T-shaped configuration. The vertical leg on each side of the guard has a lower leg portion rigidly secured to the truck in the central portion thereof and an upper leg portion pivotally secured to the lower leg which supports one side of the guard canopy. The pair of upper leg portions are pivotable with the guard canopy both forwardly and rearwardly of vertical position. The guard assembly is secured to a truck body portion which includes a rearwardly extending battery tray or plate for supporting the battery of an electric lift truck on the chassis of the truck.

Inventors

  • 👤 D Erickson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 21:04
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/07545

Claims Analysis

Total Claims: 21
Claim 1
Independent Claim 113 words
An overhead guard for industrial trucks having an operator''s station generally centrally of the truck comprising a pair only of transversely spaced upstanding legs mounted from opposite sides and generally centrally of the truck, each of said legs including upper and lower rigid leg portions, each lower leg portion being secured rigidly to the truck and each upper leg portion being connected pivotably to the respective lower leg portion at a location below the upper end of the lower leg portion, extensible means connecting the upper ends of at least one pair of upper and lower leg portions and a guard canopy secured to the upper end portions of said upper leg portions.
Claim 2
Dependent Claim 113 words
An overhead guard for industrial trucks having an operator''s station generally centrally of the truck comprising a pair only of transversely spaced upstanding legs mounted from opposite sides and generally centrally of the truck, each of said legs including upper and lower rigid leg portions, each lower leg portion being secured rigidly to the truck and each upper leg portion being connected pivotably to the respective lower leg portion at a location below the upper end of the lower leg portion, extensible means connecting the upper ends of at least one pair of upper and lower leg portions and a guard canopy secured to the upper end portions of said upper leg portions.
Claim 3
Dependent Claim 73 words
An overhead guard as claimed in claim 1 wherein said pair of upper leg portions and guard canopy toGether form an upper guard portion, said upper guard portion being pivotable rearwardly of the lower leg portions to a retracted position in which the extensible means and the associated upper leg portion and portion of the lower leg portion above the pivot therein of the upper leg portion is disposed in a triangular relationship.
Claim 4
Dependent Claim 83 words
An overhead guard as claimed in claim 1 wherein said guard canopy and upper leg portions are pivotable from an upright operative position to a rearwardly extending retracted non-operative position in which said extensible means is extended and urges the guard and upper leg portions to an operative position, forming a trinagular configuration with the respective upper leg portion and that part of the lower leg portion located between the pivoted connection thereon of the upper leg portion and the upper end thereof.
Claim 5
Dependent Claim 159 words
An overhead guard for industrial trucks having an operator''s station generally centrally of the truck comprising a first upstanding rigid leg member connected fixedly to and generally centrally of each side of the truck, a second rigid leg member connected pivotally to each first leg member at a location spaced beneath the upper end portion of the first leg member, said second leg members being securable to the first leg members in upstanding positions to form a pair of transversely spaced aligned upstanding leg means with the first leg members and being pivotable rearwardly of the truck on the first leg members to retracted positions, an overhead guard portion connected to the upper ends of the second leg members and extending over the operator''s compartment, and extensible means connected to the upper end portion of at least one of said first leg members and connected operatively to said overhead guard portion longitudinally intermediate the forward and rear ends thereof.
Claim 6
Dependent Claim 159 words
An overhead guard for industrial trucks having an operator''s station generally centrally of the truck comprising a first upstanding rigid leg member connected fixedly to and generally centrally of each side of the truck, a second rigid leg member connected pivotally to each first leg member at a location spaced beneath the upper end portion of the first leg member, said second leg members being securable to the first leg members in upstanding positions to form a pair of transversely spaced aligned upstanding leg means with the first leg members and being pivotable rearwardly of the truck on the first leg members to retracted positions, an overhead guard portion connected to the upper ends of the second leg members and extending over the operator''s compartment, and extensible means connected to the upper end portion of at least one of said first leg members and connected operatively to said overhead guard portion longitudinally intermediate the forward and rear ends thereof.
Claim 7
Dependent Claim 105 words
An overhead guard as claimed in calim 4 wherein said extensible means is a tension spring which retards rearward pivotal movement of the second leg member and assists forward pivotal movement thereof to an upstanding position, said spring being located in the plane of the first and second leg members when the second leg member is in an upright or operative position and being located out of the plane of and in a triangular relationship with the second leg member and with that portion of the first leg member above the pivotal connection thereof on the second leg member when the latter member is retracted.
Claim 8
Dependent Claim 27 words
An overhead guard as claimed in claim 4 wherein the second leg members are pivotable also forwardly of the upstanding positions thereof on the first leg members.
Claim 9
Dependent Claim 51 words
An overhead guard as claimed in claim 6 wherein yielding means is connected between the first and second leg members urging the latter from a forward pivoted position to an upstanding position, and means for selectively retaining the second leg members in a forward pivoted position or in an upstanding position.
Claim 10
Dependent Claim 44 words
An overhead guard as claimed in claim 4 wherein operator''s signalling means is located at the forward end of the overhead guard portion which connects the upper ends of the second leg members, said signalling device being actuated upon contact thereof with an object.
Claim 11
Dependent Claim 28 words
An overhead guard as claimed in claim 8 wherein said signalling device is a bumper bar urged in a direction forwardly of the vehicle and actuatable rearwardly thereof.
Claim 12
Dependent Claim 34 words
An overhead guard as claimed in claim 4 wherein the overhead guard portion extends over the operator''s compartment and forms with said pair of leg means when in operative position a generally T-shaped guard.
Claim 13
Dependent Claim 75 words
An overhead guard as claimed in claim 4 wherein the overhead guard forms a portion of an unitary truck body portion having a transversely extending vertical plate member secured to the first leg members a horizontal plate member secured to the vertical plate members and extending rearwardly of the truck, said horizontal plate member being adapted to function as a battery tray or support when the battery is located In operative position on the truck.
Claim 14
Dependent Claim 67 words
An overhead guard as claimed in claim 4 wherein said second leg members each comprises a pair of spaced side plates which straddle the upper end portion of each first leg member and are pivotally connected to the first leg member outwardly of the opposite sides thereof, said extensible means being mounted at one end within the space provided between the sides of each second leg member.
Claim 15
Dependent Claim 69 words
An overhead guard as claimed in claim 4 wherein said second leg members are secured in said upstanding positions by securing means, said securing means connecting each pair of said first and second leg members together at a location intermediate the location at which the second leg member pivots on the first leg member and the location at which the extensible means is connected to the first leg member.
Claim 16
Dependent Claim 32 words
An overhead guard as claimed in claim 4 wherein said second leg members and overhead guard portion when fully pivoted rearwardly of the truck remains within the longitudinal dimension of the truck.
Claim 17
Dependent Claim 66 words
An overhead guard as claimed in claim 4 wherein said extensible means is connected operatively to said overhead guard portion at a location longitudinally between the connection thereto of the adjacent second leg member and the rear end of the overhead guard portion, such that upon retraction of said overhead guard portion, said extensible means forms with the adjacent second leg member a generally X-shaped configuration.
Claim 18
Dependent Claim 36 words
An overhead guard as claimed in claim 4 wherein said extensible means is a tension spring which retards rearward pivotal movement of the second leg member and assists forward pivotal movement thereof to an upstanding position.
Claim 19
Dependent Claim 119 words
In an industrial truck a generally centrally located operator''s compartment, a battery section located rearwardly of the operator''s compartment, and a unitary overhead guard and body portion comprising a generally T-shaped overhead guard having upstanding support leg members mounted on opposite sides of the truck adjacent the operator''s station, a transversely extending vertical plate means secured to the pair of upstanding leg members and a rearwardly extending horizontal plate means rigidly secured to the vertical plate means and forming a floor member in that portion of the truck in which the battery is located, said horizontal plate means being adapted to function as a battery tray or support when the battery is located in operative position on the truck.
Claim 20
Dependent Claim 119 words
In an industrial truck a generally centrally located operator''s compartment, a battery section located rearwardly of the operator''s compartment, and a unitary overhead guard and body portion comprising a generally T-shaped overhead guard having upstanding support leg members mounted on opposite sides of the truck adjacent the operator''s station, a transversely extending vertical plate means secured to the pair of upstanding leg members and a rearwardly extending horizontal plate means rigidly secured to the vertical plate means and forming a floor member in that portion of the truck in which the battery is located, said horizontal plate means being adapted to function as a battery tray or support when the battery is located in operative position on the truck.
Claim 21
Dependent Claim 23 words
An industrial truck as claimed in claim 17 wherein the vertical and rearwardly extending means forms a rear body portion of the truck.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-10-01 1977-04-02 1977-10-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-01 1981-04-02 1981-10-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-01 1985-04-02 1985-10-02 $7700.00 Window Closed / Lapsed

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