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US 2002/0119030 A1Published application
Automatic pole guide transfer mechanism
AssigneeHydra Tech, Inc.
InventorDavid L. Hensler
Life of this patent
Estimating the term…
Abstract
A digger derrick truck for installing poles into the ground. The digger derrick truck includes a boom on which a pole guide assembly is slidably mounted. The pole guide assembly is operatively associated with a latching mechanism which releasably couples the pole guide assembly and the boom in an operative position and an inoperative position. The latching mechanism includes a latch arm and a release mechanism such that, when the boom is retracted, the release mechanism allows the latch arm to pivot and couple the pole guide assembly and the boom.
Claims21
A digger derrick apparatus, comprising:
- a boom;
- a pole guide member movably mounted on said boom, said pole guide member having a plurality of boom positions;
- a latch operatively associated with said pole guide member, said latch having a first latch position wherein said latch releasably locks said pole guide member in one of said boom positions, and a second latch position wherein said latch releasably locks said pole guide member in another one of said boom positions;
- and
- a release member operatively associated with said latch, said release member operable to selectively cause said latch to operate in a selected one of said first and second latch positions.
2 more elements
A digger derrick apparatus comprising:
- a boom having a plurality of telescoping boom sections;
- a pole guide member movably mounted on said boom, said pole guide member having a plurality of boom positions;
- a latch operatively associated with said pole guide member, said latch having a pivotable latch arm, said latch arm having a first latch position wherein said latch arm releasably locks said pole guide member in one of said boom positions, and a second latch position wherein said latch arm releasably locks said pole guide member in another one of said boom positions;
- and
- a release member operatively associated with said latch arm, said release member selectively operable to cause said latch to latch said pole guide member in one of said operable and inoperable boom positions.
2 more elements
Dependencies are inferred from the claim text.