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US 4,729,574 AGranted
Wheeled material carrier
AssigneeTipke Manufacturing Co., Inc.
InventorJames M. Tipke
Life of this patent
Estimating the term…
Abstract
A wheeled material carrier convertible for use as a hand cart or as a vehicular trailer. The carrier is provided with side members having downwardly open sockets at their front edges. Interchangeable support member can be readily mounted to the wheeled material carrier. They can be selected from rigid legs releasably mounted in the sockets, a bicycle hitch having forwardly extending hitch members releasably mounted in the sockets, or a utility hitch having two forwardly extending hitch members releasably mounted in the sockets and a central hitch member releasably attached to a handle extending across the front of the carrier.
Claims7
A wheeled material carrier convertible for use as a hand cart or as a vehicular trailer, comprising:
- a frame formed symmetrically along a longitudinal center line and having longitudinally spaced front and rear ends;
- a pair of wheels rotatably mounted at opposite sides of the frame about a common transverse axis;
- a bottom wall extending between the front and rear ends of the frame;
- a pair of side members extending between front and rear edges along opposite sides of the bottom wall;
- a pair of downwardly open sockets fixed to the front end of the frame in transversely spaced upright positions at opposite sides of its longitudinal center line;
- a handle having a transverse section joined by spaced legs which are mounted to the respective side members for movement of the handle between an extended position with the transverse section of the handle spaced forwardly from the front end of the frame during use of the wheeled material carrier as a hand cart, and a retracted position with the transverse section of the handle located adjacent to the front end of the frame during use of the wheeled material carrier as a vehicular trailer;
- and
- interchangeable support means releasably mounted in the respective sockets for facilitating usage of the material carrier either as a hand cart or as a vehicular trailer;
- the support means comprising a pair of forwardly-extending rigid hitch members including rear ends releasably mounted in the respective sockets and front ends provided with means for attachment to a bicycle when the wheeled material carrier is being utilized a a trailer.
6 more elements
A wheeled material carrier convertible for use as a hand cart or as a vehicular trailer, comprising:
- a frame formed symmetrically along a longitudinal center line and having longitudinally spaced front and rear ends;
- a pair of wheels rotatably mounted at opposite sides of the frame about a common transverse axis;
- a bottom wall extending between the front and rear ends of the frame;
- a pair of side members extending between front and rear edges along opposite sides of the bottom wall;
- a pair of downwardly open sockets fixed to the front end of the frame in transversely spaced upright positions at opposite sides of its longitudinal center line;
- a handle having a transverse section joined by spaced legs which are mounted to the respective side members for movement of the handle between an extended position with the transverse section of the handle spaced forwardly from the front end of the frame during use of the wheeled material carrier as a hand cart, and a retracted position with the transverse section of the handle located adjacent to the front end of the frame during use of the wheeled material carrier as a vehicular trailer;
- and
- interchangeable support means releasably mounted in the respective sockets for facilitating usage of the material carrier either as a hand cart or as a vehicular trailer;
- the support means comprising three forwardly-extending rigid hitch members in which two of the hitch members include rear ends releasably mounted in the respective sockets and the remaining one hitch member includes a rear end attached to the transverse section of the handle while in its retracted position, the three hitch members having forward ends rigidly joined to one another to structurally interconnect the cart frame and handle as a utility tractor hitch for attachment to a towing vehicle.
6 more elements
A wheeled material carrier convertible for use as a hand cart or as a vehicular trailer, comprising:
- a frame formed symmetrically along a longitudinal center line and having longitudinally spaced front and rear ends;
- a pair of wheels rotatably mounted at opposite sides of the frame about a common transverse axis;
- a bottom wall extending between the front and rear ends of the frame;
- a pair of side members extending between front and rear edges along opposite sides of the bottom wall;
- a pair of downwardly open sockets fixed to the front end of the frame in transversely spaced upright positions at opposite sides of its longitudinal center line;
- a handle having a transverse section joined by spaced legs which are mounted to the respective side members for movement of the handle between an extended position with the transverse section of the handle spaced forwardly from the front end of the frame during use of the wheeled material carrier as a hand cart, and a retracted position with the transverse section of the handle located adjacent to the front end of the frame during use of the wheeled material carrier as a vehicular trailer;
- and
- interchangeable support members selected from one of the following choices:
- (a) a pair of downwardly-extending rigid legs releasably mounted in the respective sockets to act as ground engaging supports for the front end of the frame when the wheeled material carrier is being utilized as a hand cart;
- (b) a pair of forwardly-extending rigid hitch members including rear ends releasably mounted in the respective sockets and front ends provided with means for attachment to a towing vehicle;
- or
- (c) three forwardly-extending rigid hitch members, in which two of the hitch members include rear ends releasably mounted in the respective sockets and the remaining one hitch member includes a rear end attached to the transverse section of the handle while in its retracted position, and in which the three hitch members each have forward ends rigidly joined to one another to structurally interconnect the cart frame and handle as a utility trailer hitch for attachment to a towing vehicle.
9 more elements
Dependencies are inferred from the claim text.