Land vehicles – Wheeled – Nesting vehicles
Patent
1993-04-06
1994-02-22
Johnson, Brian L.
Land vehicles
Wheeled
Nesting vehicles
188 19, B62B 504
Patent
active
052880893
ABSTRACT:
A brake mechanism for a shopping cart able to brake an unattended cart while enabling manual release of the brakes for user control and automatic release of the brakes in response to telescoping joinder of the carts. Comprising the braking mechanism is a brake pad at the underside of a pair of vertically disposed brake rods displaceable for the pads to engage and disengage the caster wheels of the cart. A compressed coil spring on each brake rod biases the pad thereat toward engagement with the wheels. A transverse actuator bar adjacent the cart handle, when squeezed toward the cart handle, causes the brake rod to incur an upward camming and effect release of the brakes. At the same time, a second actuator bar resting on the swing seat of the cart and displaceable upwardly with the swing seat in response to telescoping of the carts is pivotally displaced upwardly in response to telescoping to raise the brake rods and release the brakes.
REFERENCES:
patent: 2958537 (1960-11-01), Young
patent: 3061049 (1962-10-01), Bramley
patent: 3095211 (1963-06-01), Altherr
patent: 3458015 (1969-07-01), Collins et al.
patent: 3500965 (1970-03-01), Nossokoff et al.
patent: 3501164 (1970-03-01), Peterson
patent: 4840388 (1989-06-01), Doughty
patent: 5090517 (1992-02-01), Doughty
Bowers A. Dave
Roe Johnny
Johnson Brian L.
Rubin Daniel
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