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US 3,939,592 AGranted
Extensible tape devices
OwnerRichard D. Johnsoninventor
Life of this patent
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Abstract
An extensible rollup device comprises an elongated resiliently flexible tape body having a transversely arched bias which maintains the body relatively stiffly extended until bias at one terminal portion is overcome, such terminal portion provided with a utility element which avoids interferring with extensibility and is adapted to be rolled up in the device. The utility element may comprise a hook, a claw, weight, banner, etc. At its opposite terminal portion the body may have a handle. Rollup sensitivity control, rollup timing delay and rollup stop are provided.
Claims14
An extensible rollup device, comprising:
- an elongated resiliently flexible tape body having a normal rollup bias, and a transversely arching bias for retaining the body selectively extended in opposition to said rollup bias;
- rollup of the extended body being triggered by relatively flattening a terminal portion thereof to overcome the arching bias;
- and
- a utility element carried on said terminal portion, in noninterfering relation to functioning of said rollup bias or said arching bias, and adapted to be rolled up within the tape.
1 more element
Dependencies are inferred from the claim text.