Supports – Stand – Standard type
Patent
1993-05-04
1994-08-02
Friedman, Carl D.
Supports
Stand
Standard type
403299, 411177, 135 27, 135 99, 135114, F16N 1300, A45B 2500
Patent
active
053338243
ABSTRACT:
A pole extension system for rigidly and tightly connecting an extension pole to a main pole. The main pole has a cylindrical end portion into which a T-nut is securely mounted coaxial with the pole axis. The extension pole has a cylindrical end portion forming an alignment shaft having a diameter that is smaller than the diameter of the main portion of the extension pole, such that an abutment shoulder is formed where the pole end portion meets with the extension pole. A bolt is mounted at the end of the alignment shaft and adapted for being screwed into the T-nut as the main pole and the extension pole are rotated relative to each other. A stabilizer means is mounted at the end portion of the main pole and includes a long tubular alignment sleeve having a length which extends past the end portion of the main pole and receives therein the alignment shaft in a close fitting relationship. In the connection step, the main pole is tightly and firmly attached to the extension pole by turning the poles relative to each other, thereby tightening the bolt and nut, with the poles further securely maintained by the alignment sleeve fitting around the alignment shaft and butted against the abutment shoulder on the extension pole.
REFERENCES:
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patent: 4459787 (1984-07-01), Wilcox
patent: 5006025 (1991-04-01), Duran
patent: 5163710 (1992-11-01), Chirtel et al.
Friedman Carl D.
Wood Wynn E.
Young Philip
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