Telescoping chair for supporting bars
View Patent ↗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.
1. A chair for supporting a bar comprising:
at least a first and a second section having top and bottom ends, wherein one section is received in the other section such that the sections telescope between a collapsed position and an extended position;
a lock between the first and second sections such that the sections lock in the extended position wherein the lock further comprises:
at least one protrusion defined on the first section; and
at least one J-slot defined in the second section, the protrusion being received in the J-slot wherein the J-slot is oven to the bottom end of the second section, and wherein the first section is received in the second section; and
a seat adapted to receive the bar, the seat being defined at the top end of at least one of the sections.
2. The chair of claim 1 wherein the seat further comprises two concave recesses defined in the top end of one of the sections.
3. The chair of claim 1 further comprising a base connected to the bottom end of one of the sections.
4. The chair of claim 1 further comprising a retaining ring connected to the first section, the retaining ring being dimensioned to abut the second section, so the retaining ring prevents the sections from separating.
5. The chair of claim 4 wherein the retaining ring includes a finger notch.
6. The chair of claim 1 wherein the chair is comprised of plastic.
7. A chair for supporting a bar comprising:
a top section, a bottom section, and at least one intermediate section, wherein the sections are received in each other such that the sections telescope between a collapsed position and an extended position;
a plurality of locks, such that the sections lock in the extended position;
a seat defined on at least the top section; and
a retaining ring attached to the toy section, the retaining ring being dimensioned to abut the bottom section.
8. The chair of claim 7 further comprising a base connected to the bottom section.
9. The chair of claim 7 wherein:
the top section and the intermediate section are received one in the other; and
wherein one of the plurality of locks comprises:
at least one protrusion defined on one of the top section and the intermediate section; and
at least one slot defined in the other of the top section and the intermediate section wherein the protrusion is engaged in the slot.
10. The chair of claim 7 wherein the retaining ring further comprises a finger notch.
11. The chair of claim 7 wherein each lock further comprises a detent and an indentation.
12. The chair of claim 7 wherein each lock further comprises a spring tab and a window.
13. The chair of claim 7 wherein the chair is comprised of plastic.
14. 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.
15. The chair of claim 14 , wherein the first lock further comprises:
at least one protrusion defined 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 protrusion is engaged in the slot.