US3874111A - Toy bulldozer - Google Patents

Toy bulldozer Download PDF

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Publication number
US3874111A
US3874111A US437881A US43788174A US3874111A US 3874111 A US3874111 A US 3874111A US 437881 A US437881 A US 437881A US 43788174 A US43788174 A US 43788174A US 3874111 A US3874111 A US 3874111A
Authority
US
United States
Prior art keywords
tractor
blade
extending
handle
bulldozer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US437881A
Other languages
English (en)
Inventor
Ronald R Pauly
Curtis H Fahrendorff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hasbro Inc
Original Assignee
Tonka Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tonka Corp filed Critical Tonka Corp
Priority to US437881A priority Critical patent/US3874111A/en
Priority to CA206,661A priority patent/CA1000502A/en
Priority to AU72292/74A priority patent/AU478818B2/en
Priority to ES1974205295U priority patent/ES205295Y/es
Priority to GB4175774A priority patent/GB1431246A/en
Priority to IT53756/74A priority patent/IT1021950B/it
Priority to JP49133508A priority patent/JPS50108044A/ja
Application granted granted Critical
Publication of US3874111A publication Critical patent/US3874111A/en
Priority to HK640/76*UA priority patent/HK64076A/xx
Assigned to FIRST NATIONAL BANK, THE reassignment FIRST NATIONAL BANK, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TONKA CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H17/00—Toy vehicles, e.g. with self-drive; ; Cranes, winches or the like; Accessories therefor
    • A63H17/12—Toy vehicles, e.g. with self-drive; ; Cranes, winches or the like; Accessories therefor with cranes, winches or the like

Definitions

  • ABSTRACT A toy bulldozer including a tractor having a dozer blade extending across the front thereof with arms extending rearwardly from the blade on either side of the tractor and having their rear ends pivoted to the tractor on a common transverse axis, and a control mechanism for raising and lowering the blade about said pivot axis comprising a handle having its lower end pivoted to the blade and extending upwardly therefrom slidably through a simulated hydraulic cylinder of resilient plastic material which is mounted on the front portion of the tractor.
  • Catch means are provided for releasably locking the handle at various positions of vertical adjustment with the blade at different elevations.
  • This invention relates generally to miniature toy vehicles and more particularly concerns toy bulldozers or the like wherein an earthmoving blade is mounted on the vehicle extending crosswise to the direction of travel and wherein the blade is vertically adjustable between different positions of elevation.
  • toy bulldozers have generally comprised a tractor with a front dozer blade which is vertically movable by some sort of lever mechanism. This is not realistic of the full counterpart where such dozer blades are now generally vertically adjusted by means of hydraulic cylinders.
  • the object of the present invention is to provide a miniature toy bulldozer wherein the dozer blade is adjusted to its various positions through a hand control device which simulates a hydraulic cylinder in appearance and in some respects in operation.
  • the invention broadly comprises a toy bulldozer wherein the bulldozer blade has a handle which is mounted for vertical sliding movement in simulated hydraulic cylinders to give the appearance of hydraulic cylinders operating the blade adjustment.
  • Catch means acting between the handle and cylinders lock the blade in adjusted position.
  • FIG. I is aside elevation ofthe toy bulldozer with the dozer blade positioned at ground level.
  • FIG. 2 is a top plan view of the front portion of a bulldozer embodying the present invention.
  • FIG. 3 is a transverse section taken on line 3-3 of FIG. 1 and looking forwardly.
  • a toy tractor has front wheels 11 and rear wheels 12 at each side.
  • a track 14 of flexible resilient material is trained around the pair of wheels 11, 12 on each side of the tractor.
  • the tractor 10 includes a front end portion 15 as well as side portions 16.
  • a bulldozer blade 17 extends crosswise in front of tractor l2 and is connected to a pair of L-shaped brackets or arms 18 each of which has its forward portion 19 integrally secured to the blade and then extends rearwardly alongside the tractor with its rear end journaled on a pin 20 extending laterally from the adjacent side portion 16. Blade 17 is thus movable in a generally vertical direction about the axis of pins 20.
  • the device for adjusting blade 17 and securing it in a desired position of adjustment is denoted generally by the numeral 22.
  • This comprises a U-shaped handle 24 having a bight portion 25 connecting parallel legs 26 at their upper ends.
  • legs 26 are provided with aligned terminals 27 which are journaled in apertured tabs 28 mounted on the bracket portions 19 and extending rearwardly therefrom.
  • Each of the legs 26 has upper and lower catches denoted respectively at 29 and 30 formed on the rear side thereof.
  • a pair of simulated hydraulic cylinders 31 are mounted one on each side of the front end portions 15 of the tractor. These are tubular shaped members of relatively rigid plastic material which are split up the rear side leaving the open slot 32 through which the legs 26 can be inserted into the members during assernbly. At approximately their longitudinal centers the members 31 have integrally formed U-shaped collars 34 each of which has a pair of laterally spaced tabs 35 which are journaled on a cross pin 36 mounted to extend transversely through the tractor front portion 15. Pin 36 is spaced relative to the catches 29 and 30 so as to interfere with smooth longitudinal sliding movement of legs 26 in members 31.
  • the numeral 37 denotes a simulated hydraulic line which leads from the upper end of one member 31 through the front portion 15 of the tractor to the upper end of the other member 31. Accordingly, both members 31 and line 37 are formed as a single molded plastic part.
  • the handle 24 In normal operating position with the dozer blade in scraping relation along the surface of ground G, the handle 24 is in its lowered position as shown in FIGS. 1, 2 and 3. In this position the catches 29 and 30 on the legs 26 will be below the pin 36 as shown in FIG. 4. The engagement between the catches 29 and the pin 36 will yieldably retain the dozer blade in this lowered position.
  • the blade 17 may be raised to an intermediate position or to a fully raised transport position by pulling upwardly on the handle bight portion 25.
  • the member 3 acts as a spring and the upper and lower ends thereof will flex upwardly shown in FIG. 5 allowing the catches to pass over the pin.
  • token members 31 yieldably retain the dozer blade in any adjusted position.
  • the adjustment of the dozer blade is about the axis of pin 20. It will also be understood that the handle 24 and members 31 will tilt about the axis of pin 36 during raising or lowering of the blade.
  • a bulldozer blade extending across the front of the tractor with a pair of arms extending rearwardly from the blade one on each side of the tractor and having their rear ends pivoted to the tractor on a common horizontal axis extending transversely of the tractor,
  • locking means acting between at least one of said legs and cylinderfor releasably locking the leg in various positions therein.

Landscapes

  • Operation Control Of Excavators (AREA)
  • Toys (AREA)
  • Automatic Assembly (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US437881A 1974-01-30 1974-01-30 Toy bulldozer Expired - Lifetime US3874111A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US437881A US3874111A (en) 1974-01-30 1974-01-30 Toy bulldozer
CA206,661A CA1000502A (en) 1974-01-30 1974-08-09 Toy bulldozer
ES1974205295U ES205295Y (es) 1974-01-30 1974-08-14 Empujadora-niveladora de juguete.
AU72292/74A AU478818B2 (en) 1974-01-30 1974-08-14 Toy bulldozer
GB4175774A GB1431246A (en) 1974-01-30 1974-09-25 Toy vehicle
IT53756/74A IT1021950B (it) 1974-01-30 1974-10-28 Bulldozer giocattolo
JP49133508A JPS50108044A (xx) 1974-01-30 1974-11-20
HK640/76*UA HK64076A (en) 1974-01-30 1976-10-14 Toy vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US437881A US3874111A (en) 1974-01-30 1974-01-30 Toy bulldozer

Publications (1)

Publication Number Publication Date
US3874111A true US3874111A (en) 1975-04-01

Family

ID=23738310

Family Applications (1)

Application Number Title Priority Date Filing Date
US437881A Expired - Lifetime US3874111A (en) 1974-01-30 1974-01-30 Toy bulldozer

Country Status (7)

Country Link
US (1) US3874111A (xx)
JP (1) JPS50108044A (xx)
CA (1) CA1000502A (xx)
ES (1) ES205295Y (xx)
GB (1) GB1431246A (xx)
HK (1) HK64076A (xx)
IT (1) IT1021950B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD424130S (en) * 1999-03-18 2000-05-02 Wah Hing Toys Development Co., Ltd. Toy vehicle
US6508320B2 (en) 2001-02-08 2003-01-21 Mattel, Inc. Children's ride-on vehicle and bucket assembly
USD978260S1 (en) * 2020-04-13 2023-02-14 Shantou Jiabaile Baby Products Co. Ltd Toy crane

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557851A (en) * 1949-01-29 1951-06-19 Russell O Warner Load-carrying attachment for toy tractors
US2563974A (en) * 1946-06-21 1951-08-14 John A Thierry Toy excavator
US2702963A (en) * 1952-05-10 1955-03-01 Carl A Swenson Toy loader
US2812869A (en) * 1954-11-17 1957-11-12 Marx & Co Louis Toy power shovel
US2985983A (en) * 1959-05-01 1961-05-30 Wilbert P Konstenius Toy power shovel
US3161987A (en) * 1963-01-16 1964-12-22 Structo Mfg Company Bulldozer toy with automatic dump mechanism
US3462874A (en) * 1968-01-17 1969-08-26 Tonka Corp Toy loader
US3711990A (en) * 1971-03-08 1973-01-23 Tonka Corp Cylinder mounting for toy dump truck

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563974A (en) * 1946-06-21 1951-08-14 John A Thierry Toy excavator
US2557851A (en) * 1949-01-29 1951-06-19 Russell O Warner Load-carrying attachment for toy tractors
US2702963A (en) * 1952-05-10 1955-03-01 Carl A Swenson Toy loader
US2812869A (en) * 1954-11-17 1957-11-12 Marx & Co Louis Toy power shovel
US2985983A (en) * 1959-05-01 1961-05-30 Wilbert P Konstenius Toy power shovel
US3161987A (en) * 1963-01-16 1964-12-22 Structo Mfg Company Bulldozer toy with automatic dump mechanism
US3462874A (en) * 1968-01-17 1969-08-26 Tonka Corp Toy loader
US3711990A (en) * 1971-03-08 1973-01-23 Tonka Corp Cylinder mounting for toy dump truck

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD424130S (en) * 1999-03-18 2000-05-02 Wah Hing Toys Development Co., Ltd. Toy vehicle
US6508320B2 (en) 2001-02-08 2003-01-21 Mattel, Inc. Children's ride-on vehicle and bucket assembly
USD978260S1 (en) * 2020-04-13 2023-02-14 Shantou Jiabaile Baby Products Co. Ltd Toy crane

Also Published As

Publication number Publication date
ES205295Y (es) 1976-06-01
GB1431246A (en) 1976-04-07
AU7229274A (en) 1976-02-19
HK64076A (en) 1976-10-22
JPS50108044A (xx) 1975-08-26
ES205295U (es) 1976-02-01
IT1021950B (it) 1978-02-20
CA1000502A (en) 1976-11-30

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FIRST NATIONAL BANK, THE, ILLINOIS

Free format text: SECURITY INTEREST;ASSIGNOR:TONKA CORPORATION;REEL/FRAME:005001/0980

Effective date: 19871016