Retractable tube assembly
First Claim
1. A retractable tube assembly comprising:
- an inner tube having a non-circular cross section, a top end, and a bottom end;
an elastic locating ring, which is fastened to the bottom end of said inner tube and is substantially in flush with a periphery of said inner tube;
a rotary actuating member mounted inside said locating ring and rotatable relative to said locating ring between a locking position and an unlocking position, said rotary actuating member having a center through hole axially extending through top and bottom sides thereof and at least one radially protruding major axis portion;
an outer tube having a top end sleeved onto the bottom end of said inner tube, a cross section fitting said inner tube, an inside wall facing a periphery of said locating ring, and a bottom end; and
a rotary knob pivotally coupled to the bottom end of said outer tube, said rotary knob having a link inserted through the center through hole of said rotary actuating member for rotating said rotary actuating member between said locking position where said locating ring is peripherally forced against the inside wall of said outer tube to lock said outer tube to said inner tube and said unlocking position where said locating ring is peripherally spaced from the inside wall of said outer tube for enabling said outer tube to be moved axially relative to said inner tube.
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Accused Products
Abstract
A retractable tube assembly includes a non-circular inner tube, an elastic locating ring fastened to the bottom end of the inner tube, a rotary actuating member, which has two radially protruding major axis portions and is rotatably mounted inside the elastic locating ring, an outer tube axially slidably coupled to the inner tube, and a rotary knob pivotally coupled to the bottom end of the outer tube and provided with a link inserted into the rotary actuating member for rotating the rotary actuating member between a locking position where the elastic locating ring is peripherally forced against an inside wall of the outer tube to lock the outer tube to the inner tube and an unlocking position where the elastic locating ring is peripherally spaced from the inside wall of the outer tube for enabling the outer tube to be moved axially relative to the inner tube.
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Citations
7 Claims
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1. A retractable tube assembly comprising:
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an inner tube having a non-circular cross section, a top end, and a bottom end;
an elastic locating ring, which is fastened to the bottom end of said inner tube and is substantially in flush with a periphery of said inner tube;
a rotary actuating member mounted inside said locating ring and rotatable relative to said locating ring between a locking position and an unlocking position, said rotary actuating member having a center through hole axially extending through top and bottom sides thereof and at least one radially protruding major axis portion;
an outer tube having a top end sleeved onto the bottom end of said inner tube, a cross section fitting said inner tube, an inside wall facing a periphery of said locating ring, and a bottom end; and
a rotary knob pivotally coupled to the bottom end of said outer tube, said rotary knob having a link inserted through the center through hole of said rotary actuating member for rotating said rotary actuating member between said locking position where said locating ring is peripherally forced against the inside wall of said outer tube to lock said outer tube to said inner tube and said unlocking position where said locating ring is peripherally spaced from the inside wall of said outer tube for enabling said outer tube to be moved axially relative to said inner tube. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification