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US 4,024,595 AGranted
Linkage bridge
OwnerJames Browninventor
Life of this patent
Estimating the term…
Abstract
A linkage bridge consisting of a plurality of links rotatably coupled to form an elongated structural platform, each having a rotational stop to form an elongated structural platform and being rotatably coupled for being taken up and carried by a reel which can be mounted on a truck bed, for example. Each of the link members having a bracket on the bottom side thereof for the passage through of a structural rod when the links are paid out in a linear platform configuration. The links at the reel end being passed through a structural guide for lending further structural strength and rigidity thereto.
Claims5
A linkage bridge comprising:
- a plurality of link members rotatably coupled in an end-to-end relationship forming an elongated structural platform;
- rotational stop means between each adjacent link member forming a rotational stop and resulting in a flat linear structural platform at one extreme of rotation between each adjacent link member;
- a reel coupled to an end link member and operable for rotationally taking up all of said link members for storing and transporting;
- first and second structural guide members disposed above and below said linkage members, said guide members defining an elongated rectilinear guiding for said linkage members and being operable for lending structural strength and rigidity to paid-out linkage members, said first and second guide members disposed in proximity to said reel such that the protruded end of said linkage bridge is self-supporting without auxiliary support members;
- and
- a drive wheel coupled to said linkage members, said drive wheel operable for paying out and taking up said linkage members.
3 more elements
Dependencies are inferred from the claim text.