Hydraulic and earth engineering – Miscellaneous
Patent
1982-09-30
1985-01-08
Corbin, David H.
Hydraulic and earth engineering
Miscellaneous
52 40, 405250, E02D 3700, E04H 1200
Patent
active
044924968
ABSTRACT:
A method and apparatus for lengthening or shortening a pole supporting lines, such as electric power and telephone lines. The method includes the providing of a stub adapted to be joined in abutting end-to-end relationship with the lower end of the pole to form a lower extension and support for the pole. The pole is raised vertically until its lowermost end portion is clear of the ground so that a lower end portion of the pole can be sized, as necessary, for reception by a mechanism joining the pole and stub. If necessary, the length of the pole is also shortened to provide a desired combined length. After the lower end has been sized, the pole and stub are joined to each other so that they constitute, in effect, a substantially rigid continuation of each other. The pole and stub are then vertically lowered into the ground to a required depth and the ground is consolidated around the base of the stub. The apparatus includes appropriate structure for accomplishing the preceding method.
REFERENCES:
patent: 2133563 (1938-10-01), Parks et al.
patent: 2222481 (1940-11-01), Ferguson et al.
patent: 3720068 (1973-03-01), De Rosa
patent: 3890794 (1975-06-01), Broadfoot
patent: 3911548 (1975-10-01), Perry
The MOD POLE Systems--Specifications Class III--9 Module.
Utility Methods--Electrical World--Jan. 5, 1980, pp. 82-83.
Austpole Pty., Ltd.
Corbin David H.
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