04-01-2018 дата публикации
Номер: US20180002052A1
Принадлежит:
A film applicator includes an outer tube, an inner tube in the outer tube, and an adjustment assembly in the inner tube. The adjustment assembly has a threaded shaft fixed in the inner tube, a retaining nut mounted around the threaded shaft, a turning knob rotatably mounted around the threaded shaft, and an adjustment ring threadedly provided around the threaded shaft. When at a first position, the adjustment ring pushes the turning knob against the retaining nut and allowing the threaded shaft to rotate the inner tube with respect to the outer tube, thereby adjusting the exposed length of and securing the inner tube. When at a second position, the adjustment ring does not push the turning knob, which therefore cannot drive the inner tube into rotation. The inner tube thus stays at the secured position. 1. A length-adjustable film applicator , comprising:a stand having a supporting base and an outer tube, wherein the outer tube has an end provided at the supporting base;an inner tube assembly having an inner tube, a positioning column, and a positioning sleeve, wherein the inner tube is rotatably and axially displaceably provided in the outer tube of the stand and has an operation end outside the outer tube and a positioning end in the outer tube, the positioning column is provided at the positioning end of the inner tube, and the positioning sleeve is threadedly connected to the positioning column such that, by rotating the inner tube, the positioning column is driven to either press the positioning sleeve tightly against the outer tube of the stand or loosen the positioning sleeve from the outer tube of the stand; andan adjustment assembly having a threaded shaft, a retaining nut, a turning knob, and an adjustment ring, wherein the threaded shaft has an end fixed at the operation end of the inner tube, an opposite end threadedly connected with the retaining nut, and a flange; the turning knob has a collar between the retaining nut and the flange of the threaded ...
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