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US 4,062,156 AGranted
Extensible rod
AssigneeDornier System GmbH
InventorGunter Roth
Life of this patent
Estimating the term…
Abstract
The telescoping elements of an extensible rod may be coupled sequentially to a coaxial, partly threaded spindle by respective internally threaded coupling members, each element being drivingly engaged with the spindle by a previously engaged, abuttingly coupled element. A yieldably resilient mounting for the coupling member or for one of two cooperating abutment members permits smooth engagement of the spindle threads with the coupling members.
Claims13
An extensible rod comprising:
- a. a drive spindle having an axis and carrying threads about said axis;
- b. actuating means for rotating said spindle about said axis;
- c. a plurality of axially elongated rod elements;
- d. engaged guide means on said elements for guiding relative axial movement of said elements;
- e. first coupling means associated with each of said elements for sequentially coupling said elements to said spindle and thereby axially moving each element is response to said rotating of said spindle,
- 1. said first coupling means including an internally threaded coupling member matingly engageable by said threads;
- and
- f. second coupling means for coupling each one of said elements, while coupled to said threads, to another element for joint axial movement until the coupling member associated with said other element is engaged by said threads,
- 1. one of said coupling means including yielding resilient means permitting limited axial movement of the coupling member associated with said other element relative to said one element during said joint axial movement.
6 more elements
Dependencies are inferred from the claim text.