IP Library › Granted Patent US 12692970

Granted Patent B1

US 12692970 · App. 19/018,864 · Granted Jul 28, 2026

Monitor stand with linearly adjustable height and reach

Inventor: Ronald B. Johnson (Honokaa, HI)

F16M11/046 F16M11/048 F16M2200/048 F16M2200/063 F16M2200/066 F16M2200/068

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Quick Facts

Patent No.: US 12692970
App. No.: 19/018,864
Granted: Jul 28, 2026
Kind: B1

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Abstract

A monitor stand with a base, a first linear motion stage, a second linear motion stage, and a monitor mount. The first linear motion stage attaches to and extends away from the base and has a first end attached to the base, a second end, and a first linear guide extending between the first end and the second end. The second linear motion stage is attached to and extend away from the first linear motion stage and has a first end attached to the second linear motion stage, a second end, and a second linear guide extending between the first end and the second end. The monitor mount is fixed to the second end of the second linear motion stage and is configured to attach to and support a computer monitor. One of the first linear motion stage and the second linear motion stage comprises a horizontal Sarrus linkage.

Claims (42)

1 . A monitor stand, comprising:

a base configured to mount to a horizontal surface;

a first linear motion stage attached to and extending upward from the base, the first linear motion stage comprising a first end of the first linear motion stage fixedly attached to the base, a second end of the first linear motion stage positioned above the first end of the first linear motion stage, and a vertical Sarrus linkage extending between the first end of the first linear motion stage and the second end of the first linear motion stage, the vertical Sarrus linkage having a plurality of pairs of links joining the first end of the first linear motion stage to the second end of the first linear motion stage in parallel, each of the plurality of pairs of links comprising two rigid plates coupled together with a hinge;

a second linear motion stage attached to and extending forward from the first linear motion stage, the second linear motion stage comprising a first end of the second linear motion stage fixedly attached to the second end of the first linear motion stage, a second end of the second linear motion stage positioned forward from the first end of the second linear motion stage, and a horizontal Sarrus linkage extending between the first end of the second linear motion stage and the second end of the second linear motion stage, the horizontal Sarrus linkage having a plurality of pairs of links joining the first end of the second linear motion stage to the second end of the second linear motion stage in parallel, each of the plurality of pairs of links comprising two rigid plates coupled together with a hinge;

a monitor mount fixedly coupled to the second end of the second linear motion stage and configured to attach to and support a computer monitor; and

a spring extending between the first end of the first linear motion stage and the second end of the first linear motion stage, wherein the spring is configured to exert an upward force on the second end of the first linear motion stage and counteract a weight of at least the second linear motion stage, the monitor mount, and the computer monitor;

wherein the vertical Sarrus linkage is configured to enable adjustment of a vertical position of the monitor mount with respect to the base; and

wherein the horizontal Sarrus linkage is configured to enable adjustment of a horizontal position of the monitor mount with respect to the base.

2 . The monitor stand of claim 1 , wherein the spring is a gas spring.

3 . The monitor stand of claim 1 , further comprising a plurality of counterweights configured to enable a user to add weight to the monitor stand above the spring to balance the weight of at least the second linear motion stage, the monitor mount, and the computer monitor with the upward force of the spring.

4 . The monitor stand of claim 1 , wherein the monitor mount is configured to enable rotation of the computer monitor about three independent axes.

5 . The monitor stand of claim 1 , wherein the base comprises a clamp configured to hold the base to the horizontal surface.

6 . The monitor stand of claim 1 , wherein the two rigid plates of each of the plurality of pairs of links are configured to remain nonparallel to each other.

7 . A monitor stand, comprising:

a base configured to mount to a horizontal surface;

a first linear motion stage attached to and extending away from the base, the first linear motion stage comprising a first end of the first linear motion stage fixedly attached to the base, a second end of the first linear motion stage, and a first linear guide extending between the first end of the first linear motion stage and the second end of the first linear motion stage;

a second linear motion stage attached to and extending away from the first linear motion stage, the second linear motion stage comprising a first end of the second linear motion stage fixedly attached to the second end of the first linear motion stage, a second end of the second linear motion stage, and a second linear guide extending between the first end of the second linear motion stage and the second end of the second linear motion stage;

a monitor mount fixedly coupled to the second end of the second linear motion stage and configured to attach to and support a computer monitor; and

a spring extending between the first end of one of the first linear motion stage and the second linear motion stage and the second end of the one of the first linear motion stage and the second linear motion stage, wherein the spring is configured to exert an upward force and counteract a weight of at least the monitor mount and the computer monitor;

wherein the first linear guide is configured to enable adjustment of a first position of the monitor mount with respect to the base in a first direction;

wherein the second linear guide is configured to enable adjustment of a second position of the monitor mount with respect to the base in a second direction perpendicular to the first direction; and

wherein one of the first linear guide and the second linear guide is a horizontal Sarrus linkage.

8 . The monitor stand of claim 7 , wherein the second linear guide is the horizontal Sarrus linkage, the horizontal Sarrus linkage having a plurality of pairs of links joining the first end of the second linear motion stage to the second end of the second linear motion stage in parallel, each of the plurality of pairs of links comprising two rigid plates coupled together with a hinge.

9 . The monitor stand of claim 8 , wherein the first linear guide is a vertical Sarrus linkage.

10 . The monitor stand of claim 9 , the vertical Sarrus linkage having a plurality of pairs of links joining the first end of the first linear motion stage to the second end of the first linear motion stage in parallel, each of the plurality of pairs of links comprising two rigid plates coupled together with a hinge.

11 . The monitor stand of claim 7 , wherein the spring is a gas spring.

12 . The monitor stand of claim 7 , further comprising a plurality of counterweights configured to enable a user to add weight to the monitor stand above the spring to balance the weight of at least the monitor mount and the computer monitor with the upward force of the spring.

13 . The monitor stand of claim 7 , wherein the monitor mount is configured to enable rotation of the computer monitor about three independent axes.

14 . A monitor stand, comprising:

a base configured to mount to a horizontal surface;

a monitor mount fixedly coupled to the second end of the second linear motion stage and configured to attach to and support a computer monitor;

wherein the first linear guide is configured to enable adjustment of a first position of the monitor mount with respect to the base in a first direction;

wherein the second linear guide is configured to enable adjustment of a second position of the monitor mount with respect to the base in a second direction different from the first direction; and

wherein one of the first linear motion stage and the second linear motion stage comprises a horizontal Sarrus linkage.

15 . The monitor stand of claim 14 , wherein the second linear guide is the horizontal Sarrus linkage.

16 . The monitor stand of claim 15 , the horizontal Sarrus linkage having a plurality of pairs of links joining the first end of the second linear motion stage to the second end of the second linear motion stage in parallel, each of the plurality of pairs of links comprising two rigid plates coupled together with a hinge.

17 . The monitor stand of claim 15 , wherein the first linear guide is a vertical Sarrus linkage.

18 . The monitor stand of claim 17 , the vertical Sarrus linkage having a plurality of pairs of links joining the first end of the first linear motion stage to the second end of the first linear motion stage in parallel, each of the plurality of pairs of links comprising two rigid plates coupled together with a hinge.

19 . The monitor stand of claim 14 , wherein the monitor mount is configured to enable rotation of the computer monitor about three independent axes.

20 . The monitor stand of claim 14 , wherein the base comprises a clamp configured to hold the base to the horizontal surface.