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US 2014/0232129 A1Published application
Carrier with Collapsible Wheel Assembly
OwnerDavid E. Mroczkainventor
Life of this patent
Estimating the term…
Abstract
A backpack employs a collapsible stretcher and a collapsible wheel assembly. The backpack may be transformed from a compact mode suitable for portability of the backpack to an extended mode wherein the stretcher is extended. A pair of wheels are inflated so that the wheels at one end contact the terrain and at the other end the stretcher is engaged to the backpack to provide for an efficient transport of an injured individual placed in the stretcher.
Claims10
A carrier assembly comprising:
- a pair of rail members;
- and
- an axle assembly mounted to an end of said members, said axle assembly comprising:
- a tube;
- a spring loaded extension axle received in said tube;
- a journal bearing mounted to said extension axle;
- a bladder mounted to said journal bearing;
- and
- a gas cartridge having a valve and in fluid communication with said bladder, which when said valve is opened, said bladder is inflated to form a wheel rotatable about said extension axle.
6 more elements
A carrier assembly comprising:
- a pair of supports;
- and
- an axle assembly mounted to an end of said supports, said axle assembly comprising:
- a pair of extension axles movable from a storage position to an extended position;
- a journal bearing mounted to each said extension axle;
- a bladder mounted to each said journal bearing;
- and
- a gas cartridge having a valve and in fluid communication with a said bladder, which when said valve is opened, said bladder is inflated to form a wheel rotatable about a said extension axle.
5 more elements
Dependencies are inferred from the claim text.