Long arm
AssigneeHakusan Inc.
InventorShigeo Hirose
Life of this patent
Estimating the term…
Abstract
Provided is a long arm supported in a cantilever manner with light weight and high rigidity. The rod 30 is formed from rods 31-33 so as to be a multi-stage telescopic configuration. The rods 32, 33 respectively have upright columns 42, 43 on the tips. The wire 11 is suspended between the tip of the rod 31 and the lead end of the arm via the top of the column 42. The wire 12 is suspended between the base of the column 42 and the lead end of the arm via the top of the column 42. The wire 22 is suspended between the top of the column 42 and the lead end of the arm via the top of the column 43. The tension generation means 50 pulls the wires 10, 20. The air pressure generation means 60 applies pressure to the inside of the rod 30.
Claims9
A long arm, including an arm top end side and an arm terminal end side, which is supported in a cantilever manner under gravity, the arm comprising:
- rods (30, 31, 32, 33) for forming a long arm body;
- a plurality of upright columns (40, 42, 43) standing from the rods, each of upright columns including a top section and a bottom section;
- first wires (10, 11, 12, 13) stretched between a base section of an N−1th upright column from the arm top end side and corresponding arm terminal ends via a top section of a Nth upright column;
- second wires (20, 22, 23) stretched between a top section of the N−1th upright column from the arm top end side and corresponding arm terminal ends the arm via the top section of the Nth upright column;
- and
- tension generation means (50) on the arm terminal end side for applying independent tension to the first wires and the second wires each on corresponding arm terminal ends.
Dependencies are inferred from the claim text.