Land vehicles – Wheeled – Extensible
Patent
1978-12-14
1981-02-03
Love, John J.
Land vehicles
Wheeled
Extensible
16 18R, 280 4737R, 280 4717, 301 63PW, B62B 302
Patent
active
042484537
ABSTRACT:
Accordingly, the present invention provides a collapsible carrier for transporting loads comprising a support member having two legs and an adjoining cross arm. A fold out platform device is pivotably connected to the support member for holding the loads. A telescoping handle apparatus is affixed to the support member for moving the carrier. A cylindrical wheel device having a wide slightly tapered rolling surface comprising a pair of cylindrical symmetrical surfaces upwardly tapering from a common contact point or edge is adjoined to the handle apparatus for minimizing the surface area of the wheel device contacting a travel surface along which the load is transported while increasing the stability of the carrier to facilitate the carrier rolling straight while decreasing the tendency of the carrier to laterally trip over under heavy load conditions as it is pulled along the travel surface. The angle of taper is sufficiently small to enable solely the common contact point to be in touch with the travel surface when the carrier is upright while enabling stable contact of the wider rolling tapered surface if the carrier starts to tip while being pulled.
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Love John J.
Stack Norman L.
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