Back to results
US 10,844,593 B1Granted
Extendable arm, variable shape frame, and variable shape three-dimensional structure
AssigneeFujimiy Aseisakusho Co., Ltd.
InventorNorimichi Matsuoka
Life of this patent
Estimating the term…
Abstract
An extendable arm is comprised of a plurality of cross units arranged in one direction with adjacent ones of the cross units being pivotally coupled at their ends via end coupling shafts. Each of the cross units is comprised of first and second rigid members crossing each other in an X shape and pivotally coupled at their intersection via a middle coupling shaft. The extendable arm includes an engaging protrusion and an engaging recess which move toward each other as the extendable arm extends and fit together when the extendable arm extends to a predetermined length.
Claims10
An extendable arm, comprising:
- a plurality of cross units arranged in one direction with adjacent cross units of the plurality of cross units being pivotally coupled via end coupling shafts, each cross unit of the plurality of cross units comprising:
- a first rigid member having an engaging protrusion extending away from an outer surface of the first rigid member;
- and
- a second rigid member crossing the first rigid member in an X shape and pivotally coupled with the first rigid member via a middle coupling shaft, the second rigid member comprising an engaging recess configured to receive the engaging protrusion such that the engaging protrusion and the engaging recess, which move toward each other as the extendable arm extends, fit together when the extendable arm extends to a predetermined length,
- wherein the engaging recess extends into a body of the second rigid member.
2 more elements
Dependencies are inferred from the claim text.