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US3851891A Expired / Lapsed US ⏱️ 0.0 years remaining

Cart convertible from wheel to skid transport

Assignee: Lee Raymond Organization Inc
•
Filing: 1973-03-07
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Granted: 1974-12-03
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Expires: 1993-03-07
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Abstract

Abstract A cart employing a frame having a bottom, sides, open top end and closed bottom end; wheel means secured to the bottom of the frame at the bottom end; a generally flat skid member having an upwardly curved front edge; and manually operable linkage means secured to said member and to said bottom of the frame, said linkage means having a first position at which the member is disposed between said bottom and the bottom of the wheels whereby the cart can be moved on wheels and having a second position at which the member is disposed below the wheels, and the cart can be slid over sand and the like.

Inventors

  • 👤 W Liu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 15:55
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/18; B62B13/00; B62B13/18

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 205 words
A cart which can be wheeled over hard surfaces and which can be converted to slide over soft surfaces, said cart comprising: a frame having a bottom, sides, open top and closed bottom; wheel means secured to the bottom of the frame at the bottom end, said means including a horizontal axle extending transversely across the frame with vertical wheels at each end; a generally flat skid member having an upwardly curved front edge, said member having a width essentially the same as the overall length of the wheel means; and manually operable linkage means secured to the member and the bottom of the frame, the linkage means including a rod parallel to the axle and secured to the bottom and linkage pivotally secured to opposite sides of the rod, and to opposite sides of the member, the linkage means having a first position at which the member is disposed between said bottom and the bottom of the wheels with the front edge retracted away from the wheels whereby the cart can be moved on wheels, the linkage means having a second position at which the member is lowered and disposed under the wheels and the cart can be slid over sand and the like.
Claim 2
Dependent Claim 205 words
A cart which can be wheeled over hard surfaces and which can be converted to slide over soft surfaces, said cart comprising: a frame having a bottom, sides, open top and closed bottom; wheel means secured to the bottom of the frame at the bottom end, said means including a horizontal axle extending transversely across the frame with vertical wheels at each end; a generally flat skid member having an upwardly curved front edge, said member having a width essentially the same as the overall length of the wheel means; and manually operable linkage means secured to the member and the bottom of the frame, the linkage means including a rod parallel to the axle and secured to the bottom and linkage pivotally secured to opposite sides of the rod, and to opposite sides of the member, the linkage means having a first position at which the member is disposed between said bottom and the bottom of the wheels with the front edge retracted away from the wheels whereby the cart can be moved on wheels, the linkage means having a second position at which the member is lowered and disposed under the wheels and the cart can be slid over sand and the like.
Claim 3
Dependent Claim 40 words
The cart of claim 1 further including locking means disposed at the bottom of the frame adjacent the top end thereof which cooperates with the linkage means when in the first position to prevent the member from being lowered accidentally.

References Cited (Backward Citations)

US2398142A Cited
US2428994A Cited
US2480256A Cited
US2521330A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-12-02 1978-06-03 1978-12-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-02 1982-06-03 1982-12-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-02 1986-06-03 1986-12-03 $7700.00 Window Closed / Lapsed

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