Human balance work stool
Novel sit-stand seating devices, more particularly, to sit-stand seats or stools that can tilt forward to provide balanced support for seated to near-standing postures and methods of their use are disclosed. The sit-stand devices are useful, inter alia, to provide stabilized worker positioning to carry out a task for a range of sitting through standing postures in an environment associated with a task for a worker in need thereof.
1. A sit stand device, comprising:
a base having four legs;
a seat comprising a seat pan portion;
a seat post;
a lower seat post supporting member connected to the base;
an upper seat post supporting member;
a connecting member pivotably connected to the base and to the upper seat post supporting member; and two or more leg extension members each pivotably connected to:
the base: and
the upper seat post supporting member;
wherein:
the lower seat post supporting member defines an opening for pivotably supporting the seat post;
the upper seat post supporting member defines an opening for pivotably supporting the seat post, and
the connecting member defines an opening through which the seat post passes.
2. A sit stand device accordingly to claim 1 , wherein the seat further comprises a seat back portion.
3. A sit stand device accordingly to claim 2 , wherein the seat pan and seat back are provided as a continuous element.
4. A sit stand device accordingly to claim 2 , wherein the seat further comprises a sacral support member.
5. A sit stand device accordingly to claim 4 , wherein the sacral support member is pivotably attached to or embedded within the seat.
6. A sit stand device accordingly to claim 5 , wherein the sacral support member is pivotably attached to the seat.
7. A sit stand device accordingly to claim 1 , wherein the seat post is suspended within the device.
8. A sit stand device accordingly to claim 1 , further comprising a plurality of spring loaded casters that support the device when it is unloaded.
9. A sit stand device accordingly to claim 8 , wherein the plurality of casters includes three casters spaced substantially equidistant from each other.
10. A sit stand device accordingly to claim 1 capable of maintaining the seat pan portion substantially horizontally while the seat post is tilted in a forward position.
11. A sit stand device accordingly to claim 1 , wherein the seat post is pneumatic.
12. A sit stand device accordingly to claim 1 , capable of returning itself to a more vertical position after a user removes himself from the device.
13. A sit stand device accordingly to claim 4 , wherein the sacral support member has a substantially trapezoidal shape, wherein the trapezoid's sides are longer than either the top side or the bottom side.
14. A sit stand device accordingly to claim 13 , wherein the sacral support member's top side is longer than its bottom side.
15. A method of providing stabilized worker positioning for a range of sitting through standing postures comprising:
providing a sit stand device in an environment associated with a task, the sit stand device comprising:
a base having four legs;
a seat comprising a seat pan portion;
a seat post;
a lower seat post supporting member connected to the base;
an upper seat post supporting member;
a connecting member pivotably connected to the base and to the upper seat post supporting member; and two or more leg extension members each pivotably connected to:
the base: and
the upper seat post supporting member;
wherein:
the lower seat post supporting member defines an opening for pivotably supporting the seat post;
the upper seat post supporting member defines an opening for pivotably supporting the seat post, and
the connecting member defines an opening through which the seat post passes;
sitting in the sit stand device; and
adjusting the positioning of one or more elements of the device to stabilize worker positioning for a posture required to carry out the task.
16. A sit stand device, comprising:
a base having four legs;
a seat comprising a seat pan portion, a seat back portion, and a sacral support member, wherein the seat pan and seat back are provided as a continuous element, and the sacral support member is pivotably attached to the seat;
a pneumatic seat post suspended within the device;
a lower seat post supporting member connected to the base;
an upper seat post supporting member;
a connecting member pivotably connected to the base and to the upper seat post supporting member;
three spring-loaded casters spaced substantially equidistant from each other that support the device when it is unloaded; and
two or more leg extension members each pivotably connected to:
the base: and
the upper seat post supporting member;
wherein:
the lower seat post supporting member defines an opening for pivotably supporting the seat post;
the upper seat post supporting member defines an opening for pivotably supporting the seat post;
the connecting member defines an opening through which the seat post passes;
the device is capable of maintaining the seat pan portion substantially horizontally while the seat post is tilted in a forward position; and
the device is capable of returning itself to a more vertical position after a user removes himself from the device.