US4327929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ride-on tricycle
Assignee: Mattel Inc
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Filing: 1979-02-15
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Granted: 1982-05-04
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Expires: 1999-02-15
Abstract
Abstract A child's tricycle having a generally U-shaped frame member mounting a steerable front wheel at its center and a pair of caster-mounted rear wheels at its open ends. The tricycle has a seat which mounts to the rear of the frame and depends therefrom so that the tricycle has an extremely low center of gravity and provides protection for the child on all sides.
Inventors
- 👤 John M. Melzian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:04
CPC Classifications
B; B62; B62K; B62K9/00; B62K9/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
127 words
In combination with a tricycle having a front fork rotatably supporting a pedal-driven wheel, a pair of handle bars connected to said fork and a pair of castered rear wheels, the improvement which comprises: a U-shaped frame having a pair of open ends; first means rotatably connecting said fork to the center of said frame; an elongated seat having a pair of ends, an indentation and a back, said indentation and said back being contoured to fit the anatomy of a child, each of said ends being provided with means for affixing one of said castered wheels; second means for affixing said ends of said seat to said open ends of said frame for connecting said seat thereto in depending relation therewith and with said castered wheels.
Claim 2
Dependent Claim
127 words
In combination with a tricycle having a front fork rotatably supporting a pedal-driven wheel, a pair of handle bars connected to said fork and a pair of castered rear wheels, the improvement which comprises: a U-shaped frame having a pair of open ends; first means rotatably connecting said fork to the center of said frame; an elongated seat having a pair of ends, an indentation and a back, said indentation and said back being contoured to fit the anatomy of a child, each of said ends being provided with means for affixing one of said castered wheels; second means for affixing said ends of said seat to said open ends of said frame for connecting said seat thereto in depending relation therewith and with said castered wheels.
Claim 3
Dependent Claim
244 words
In combination with a tricycle having a front fork rotatably supporting a pedal-driven wheel, a pair of handle bars connected to said fork and a pair of castered rear wheels, the improvement which comprises: a U-shaped frame having a pair of open ends, the underside of each of said open ends being provided with a plurality of cavities spaced uniformly along each of said open ends and progressing forwardly toward the center of said frame; first means rotatably connecting said fork to the the center of said frame; an elongated seat having a pair of ends, an identation and a back, said identation and said back being contoured to fit the anatomy of a child, each of said ends being provided with a frusto-conical axle cavity, at least one opening and an upwardly extending flange encircling said opening, said upwardly extending flanges being adapted to mate with an associated one of said plurality of cavities in said undersides of said open ends, whereby said seat may be moved forward and backward along said underside to provide different effective lengths for said U-shaped frame; second means passing through said openings in said ends of said seat and associated ones of said cavities in said open ends of said frame for connecting said seat thereto in depending relation therewith and with said castered wheels; and a frusto-conical axle rotatably connected to each of said frusto-conical axle cavities for connecting said castered rear wheels to said seat.
Claim 4
Dependent Claim
244 words
In combination with a tricycle having a front fork rotatably supporting a pedal-driven wheel, a pair of handle bars connected to said fork and a pair of castered rear wheels, the improvement which comprises: a U-shaped frame having a pair of open ends, the underside of each of said open ends being provided with a plurality of cavities spaced uniformly along each of said open ends and progressing forwardly toward the center of said frame; first means rotatably connecting said fork to the the center of said frame; an elongated seat having a pair of ends, an identation and a back, said identation and said back being contoured to fit the anatomy of a child, each of said ends being provided with a frusto-conical axle cavity, at least one opening and an upwardly extending flange encircling said opening, said upwardly extending flanges being adapted to mate with an associated one of said plurality of cavities in said undersides of said open ends, whereby said seat may be moved forward and backward along said underside to provide different effective lengths for said U-shaped frame; second means passing through said openings in said ends of said seat and associated ones of said cavities in said open ends of said frame for connecting said seat thereto in depending relation therewith and with said castered wheels; and a frusto-conical axle rotatably connected to each of said frusto-conical axle cavities for connecting said castered rear wheels to said seat.
Claim 5
Dependent Claim
60 words
An improvement as stated in claim 2 wherein said frame is of hollow shell construction and is molded in two sections of high density polyethylene material, each of said sections including an interlocking flange at an end opposite said open end adapted to be bolted to the other of said interlocking flanges to provide the rigidity of a one-piece frame.
Claim 6
Dependent Claim
19 words
An improvement as stated in claim 2 wherein said first means includes a frusto-conical opening for receiving said fork.
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) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |