Retractable wheel system
In one or more embodiments, a chair is provided having a frame, a seat operably connected to the frame, a backrest operably connected to the frame, and a retractable wheel assembly positioned within the frame, among other components. The retractable wheel assembly is configured to facilitate retraction of a wheel into the frame when a downward force is applied to the chair. In one or more arrangements, the retractable wheel assembly is configured to facilitate extension of a wheel below the frame in absence of a downward force.
1 . A chair seating system, comprising:
a frame;
a seat;
the seat operably connected to the frame;
a backrest;
the backrest operably connected to the frame;
one or more retractable wheel assemblies;
wherein the one or more retractable wheel assemblies have a wheel;
wherein the one or more retractable wheel assemblies have a top member;
wherein the one or more retractable wheel assemblies are configured to facilitate movement of the wheel between an extended position and a retracted position;
wherein the top member is configured to facilitate movement of the wheel when the top member pivots at a front end;
wherein the one or more retractable wheel assemblies are configured to facilitate movement of the wheel to the retracted position when a downward force is applied to the chair seating system; and
wherein the one or more retractable wheel assemblies are configured to facilitate movement of the wheel to the extended position in absence of the downward force.
2 . The system of claim 1 , wherein the wheel of the one or more retractable wheel assemblies extends below the frame when in the extended position.
3 . The system of claim 1 , wherein the wheel of the one or more retractable wheel assemblies is configured to retract into the frame when moved to the retracted position.
4 . The system of claim 1 , further comprising:
wherein the wheel of the one or more retractable wheel assemblies extends below the frame when in the extended position; and
wherein the wheel of the one or more retractable wheel assemblies is configured to retract into the frame when moved to the retracted position.
5 . The system of claim 1 , further comprising a spring configured to facilitate movement of the wheel to the extended position in absence of the downward force.
6 . The system of claim 1 , further comprising:
a spring;
wherein the spring is compressed when the downward force is applied to the chair seating system and the wheel is moved to the retracted position.
7 . The system of claim 1 , further comprising:
a spring;
wherein the wheel of the one or more retractable wheel assemblies extends below the frame when in a resting state;
wherein the spring of the one or more retractable wheel assemblies facilitates extension of the wheel.
8 . The system of claim 1 , further comprising a wheel compartment positioned within the frame and configured to receive the one or more retractable wheel assemblies.
9 . The system of claim 1 , wherein the backrest is configured to move between an upright position and a reclined position.
10 . A chair seating system, comprising:
a frame;
a seat;
the seat operably connected to the frame;
a backrest;
the backrest operably connected to the frame;
one or more retractable wheel assemblies;
wherein the one or more retractable wheel assemblies have a wheel;
wherein the one or more retractable wheel assemblies are configured to facilitate movement of the wheel between an extended position and a retracted position;
wherein the one or more retractable wheel assemblies are configured to facilitate movement of the wheel to the retracted position when a downward force is applied to the chair seating system;
wherein the one or more retractable wheel assemblies are configured to facilitate movement of the wheel to the extended position in absence of the downward force; and
wherein the wheel is positioned within a top member and wherein the top member is configured to facilitate movement of the wheel when the top member pivots at a front end and a rear end moves upward.
11 . The system of claim 1 , further comprising a spring, wherein when the downward force is applied to the chair seating system, the spring is compressed and facilitates movement of the rear end of the top member of the one or more retractable wheel assemblies to the retracted position.
12 . The system of claim 1 , further comprising:
wherein the wheel of the one or more retractable wheel assemblies extends below the frame when in the extended position;
wherein the wheel of the one or more retractable wheel assemblies is configured to retract into the frame when moved to the retracted position; and
wherein retraction and extension of the wheel occurs approximately parallel to a center axis of a spring.
13 . The system of claim 1 , further comprising:
wherein the wheel of the one or more retractable wheel assemblies extends below the frame when in the extended position;
wherein the wheel of the one or more retractable wheel assemblies is configured to retract into the frame when moved to the retracted position; and
wherein retraction and extension of the wheel occurs approximately perpendicular to a center axis of a spring.
14 . A chair seating system, comprising:
a frame;
a seat;
the seat operably connected to the frame;
a backrest;
the backrest operably connected to the frame;
a retractable wheel assembly;
wherein the retractable wheel assembly has a wheel;
wherein the retractable wheel assembly has a top member;
wherein the retractable wheel assembly has a spring;
wherein the retractable wheel assembly is configured to extend the wheel below the frame when in a resting state; and
wherein the top member is configured to facilitate movement of the wheel when the top member pivots at a front end.
15 . The system of claim 14 , wherein the wheel of the retractable wheel assembly is configured to retract into the frame when a downward force is applied to the chair seating system.
16 . The system of claim 14 , wherein the wheel of the retractable wheel assembly is configured to retract into the frame when a downward force is applied to the chair seating system;
wherein the spring of the retractable wheel assembly facilitates retraction of the wheel.
17 . The system of claim 14 , wherein the wheel of the retractable wheel assembly extends below the frame when in a resting state;
wherein the spring of the retractable wheel assembly facilitates extension of the wheel.
18 . The system of claim 14 , further comprising a wheel compartment positioned within the frame.
19 . The system of claim 14 , further comprising a wheel compartment positioned within the frame, and configured to receive the retractable wheel assembly.
20 . The system of claim 14 , wherein the retractable wheel assembly is configured to retract the wheel into the frame when a downward force is applied to the chair seating system;
wherein the retractable wheel assembly is configured to extend the wheel below the frame in absence of the downward force.
21 . The system of claim 14 , wherein the backrest is configured to move between an upright position and a reclined position.
22 . A chair seating system, comprising:
a frame;
a seat;
the seat operably connected to the frame;
a backrest;
the backrest operably connected to the frame;
a retractable wheel assembly;
wherein the retractable wheel assembly has a wheel;
wherein the retractable wheel assembly has a spring;
wherein the retractable wheel assembly is configured to extend the wheel below the frame when in a resting state; and
wherein the wheel is positioned within a top member and wherein the top member is configured to facilitate movement of the wheel when the top member pivots at a front end and a rear end moves upward.
23 . The system of claim 14 , wherein when a downward force is applied to the chair seating system, the spring is compressed and retracts the retractable wheel assembly by facilitating movement of the rear end of the top member of the retractable wheel assembly.
24 . The system of claim 14 , further comprising:
wherein the wheel of the retractable wheel assembly is configured to retract into the frame when moved to a retracted position; and
wherein retraction and extension of the wheel occurs approximately parallel to a center axis of the spring.
25 . The system of claim 14 , further comprising:
wherein the wheel of the retractable wheel assembly is configured to retract into the frame when moved to a retracted position; and
wherein retraction and extension of the wheel occurs approximately perpendicular to a center axis of the spring.
26 . A chair seating system, comprising:
a frame;
a seat;
the seat operably connected to the frame;
a backrest;
the backrest operably connected to the frame;
the frame having a wheel compartment;
a retractable wheel assembly;
wherein the retractable wheel assembly has a wheel;
wherein the retractable wheel assembly has a spring;
wherein the spring has a center axis;
wherein the spring extends through a center of the wheel;
wherein the frame is configured to receive the retractable wheel assembly;
wherein the wheel of the retractable wheel assembly is configured to retract into the frame when a downward force is applied to the chair seating system; and
wherein the downward force applied to the chair seating system upwardly bends the spring extending through the wheel, thereby causing the wheel to retract into the frame.
27 . The system of claim 26 , wherein the wheel of the retractable wheel assembly extends below the frame when in a resting state.
28 . The system of claim 26 , wherein the spring of the retractable wheel assembly facilitates extension of the wheel.
29 . The system of claim 26 , further comprising:
wherein the wheel of the retractable wheel assembly extends below the frame when in a resting state;
wherein the spring of the retractable wheel assembly facilitates extension of the wheel.
30 . The system of claim 26 , wherein the retractable wheel assembly is positioned within the wheel compartment of the frame.
31 . The system of claim 26 , wherein the retractable wheel assembly is configured to facilitate extension of the wheel below the frame; and
retraction of the wheel into the frame when the downward force is applied to the chair seating system.
32 . The system of claim 26 , wherein the backrest is configured to move between an upright position and a reclined position.
33 . A chair seating system, comprising:
a frame;
a seat;
the seat operably connected to the frame;
a backrest;
the backrest operably connected to the frame;
the frame having a wheel compartment;
a retractable wheel assembly;
wherein the retractable wheel assembly has a wheel;
wherein the retractable wheel assembly has a spring;
wherein the frame is configured to receive the retractable wheel assembly;
wherein the wheel of the retractable wheel assembly is configured to retract into the frame when a downward force is applied to the chair seating system; and
wherein the wheel is positioned within a top member and wherein the top member is configured to facilitate movement of the wheel when the top member pivots at a front end and a rear end moves upward.
34 . The system of claim 26 , further comprising:
wherein the wheel of the retractable wheel assembly extends below the frame when in an extended position;
wherein the wheel of the retractable wheel assembly is configured to retract into the frame when moved to a retracted position; and
wherein retraction and extension of the wheel occurs approximately perpendicular to a center axis of the spring.
35 . A chair seating system, comprising:
a frame;
a seat;
the seat operably connected to the frame;
a backrest;
the backrest operably connected to the frame;
the frame having a wheel compartment;
a retractable wheel assembly;
wherein the retractable wheel assembly has a wheel;
wherein the retractable wheel assembly has a spring;
wherein the spring has a center axis;
wherein the spring extends through a center of the wheel;
wherein the frame is configured to receive the retractable wheel assembly;
wherein the retractable wheel assembly is configured to facilitate extension of the wheel below the frame; and
wherein upward bending of the spring of the retractable wheel assembly is configured to facilitate retraction of the wheel into the frame when a downward force is applied to the chair seating system.
36 . The system of claim 35 , wherein the wheel of the retractable wheel assembly extends below the frame when in a resting state.
37 . The system of claim 35 , wherein the spring of the retractable wheel assembly facilitates retraction of the wheel.
38 . The system of claim 35 , further comprising:
wherein the wheel of the retractable wheel assembly extends below the frame when in a resting state;
wherein the spring of the retractable wheel assembly facilitates extension of the wheel.
39 . The system of claim 35 , wherein the retractable wheel assembly is configured to position the wheel within the wheel compartment of the frame when retracted.
40 . The system of claim 35 , wherein the backrest is configured to move between an upright position and a reclined position.
41 . A chair seating system, comprising
a frame;
a seat;
the seat operably connected to the frame;
a backrest;
the backrest operably connected to the frame;
the frame having a wheel compartment;
a retractable wheel assembly;
wherein the retractable wheel assembly has a wheel;
wherein the retractable wheel assembly has a spring;
wherein the frame is configured to receive the retractable wheel assembly;
wherein the retractable wheel assembly is configured to facilitate extension of the wheel below the frame;
wherein the retractable wheel assembly is configured to facilitate retraction of the wheel into the frame when a downward force is applied to the chair seating system; and
wherein the wheel is positioned within a top member and wherein the top member is configured to facilitate movement of the wheel when the top member pivots at a front end and a rear end moves upward.
42 . The system of claim 35 ,
wherein retraction and extension of the wheel occurs approximately perpendicular to the center axis of the spring.
43 . The system of claim 14 , wherein when the downward force is applied to the chair seating system, the spring is linearly compressed and facilitates movement of the one or more retractable wheel assemblies to a retracted position.