Telescoping Chair For Supporting Bars
First Claim
Patent Images
1. A chair for supporting a bar comprising:
- a top section, a bottom section, and at least one intermediate section, wherein the top section is telescopingly received within the at least one intermediate section, and the at least one intermediate section is telescopingly received within the bottom section, such that the sections telescope between a collapsed position and an extended position;
a first lock between the top section and the at least one intermediate section, the first lock arranged to lock the top section in an extended position relative to the at least one intermediate section;
a second lock between the at least one intermediate section and the bottom section, the second lock arranged to lock the at least one intermediate section in an extended position relative to the bottom section; and
a seat defined on the top section;
wherein the first lock further comprises;
at least one detent extending radially from a flexible finger on one of the top section and the at least one intermediate section; and
at least one slot defined in the other of the top section and the at least one intermediate section wherein the detent is engaged in the slot.
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Accused Products
Abstract
A chair for supporting bars is comprised of telescoping sections which lock in an extended position. The chair is intended for supporting the reinforcing bars utilized in reinforced concrete construction, but can also support other long bodies. The sections of the chair can be extended and locked individually, so the height of the chair is determined by which sections of the chair are extended and which sections are collapsed. Each section may have two or more different locking heights to increase the height adjustability of the chair.
73 Citations
16 Claims
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1. A chair for supporting a bar comprising:
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a top section, a bottom section, and at least one intermediate section, wherein the top section is telescopingly received within the at least one intermediate section, and the at least one intermediate section is telescopingly received within the bottom section, such that the sections telescope between a collapsed position and an extended position; a first lock between the top section and the at least one intermediate section, the first lock arranged to lock the top section in an extended position relative to the at least one intermediate section; a second lock between the at least one intermediate section and the bottom section, the second lock arranged to lock the at least one intermediate section in an extended position relative to the bottom section; and a seat defined on the top section; wherein the first lock further comprises; at least one detent extending radially from a flexible finger on one of the top section and the at least one intermediate section; and at least one slot defined in the other of the top section and the at least one intermediate section wherein the detent is engaged in the slot. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A chair for supporting a bar comprising:
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a first section and a second section both having upper and lower ends, wherein one section slides into the other section; a cradle for receiving at least one bar, the cradle being defined on the upper end of the first section; a lock between the first section and the second section, the lock configured to selectively lock the first section in one of a collapsed position and at least one extended position relative to the second section, wherein the lock includes; at least one arm extending from one of the first section and the second section; a protrusion defined on the arm; and a J-slot on the other of the first section and the second section wherein the protrusion is engaged in the J-slot. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A chair for supporting a bar comprising:
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an inner section, a middle section of smallest cross sectional area, a middle section of intermediate cross sectional area, a middle section of greatest cross sectional area, and an outer section, wherein the inner section is telescopingly received within the middle section of smallest cross sectional area and the middle section of greatest cross sectional area is telescopingly received within the outer section, such that all the sections telescope between a collapsed and at least one extended position; a cradle for receiving at least one bar defined on the inner section; a base for supporting the chair defined on the outer section; a first lock between the inner section and the middle section of smallest cross sectional area, the first lock arranged to selectively lock the inner section in one of a collapsed and an extended position relative to the middle section of smallest cross sectional area; a second lock between the middle section of greatest cross sectional area and the outer section, the second lock arranged to selectively lock the middle section of greatest cross sectional area in one of a collapsed and three extended positions relative to the outer section; wherein the first lock includes; an arm having a free end and a connected end, the arm defined on the inner section; a pin extending radially from the arm, the pin being defined closer to the free end of the arm than the connect end of the arm; and a slot defined on the middle section of smallest cross sectional area.
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Specification