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AssigneeLino Manfrotto + Co. S.p.A.
InventorPaolo Speggiorin
Estimating the term…
Two portions of an extendible rod-like element are joined together in an adjustable manner by means of a device with a external screw thread and an internal screw thread comprising an internally threaded sector movable on one of the portions of the rod-like element from an operative position of engagement with the external screw thread, in which the portions are locked as regards relative sliding, to an inoperative position of disengagement from the external screw thread, in which the portions can slide freely relative to one another. In the operative position, the internally threaded sector can be rotated for a precise adjustment of the extension of the rod-like element whereas, in the inoperative position, it is possible to carry out an approximate and quick adjustment.
A device for adjusting the length of an extendible rod-like element, particularly an extendible leg of a tripod or stand for optical or photographic equipment, in which the rod-like element comprises first and second portions associated slidably with one another by means of the device and the device comprises external and internal screw thread means fixed for translation with the first and second portions, respectively, as well as means for the operative control of the external and internal screw thread means for moving the portions relative to one another according to the preselected adjustment, characterized in that the external and internal screw thread means comprise an internally threaded sector movable on the second portion from an operative position of engagement with the external screw threads means in which the portions are locked as regards relative sliding, to an inoperative position of disengagement from the external screw thread means in which the portions can slide freely relative to one another.
Dependencies are inferred from the claim text.