Adjustable desk frame

Patent metadata

Field	Value
Publication number	US-12458137-B2
Application number	US-202519173268-A
Country	US
Kind code	B2
Filing date	Apr 8, 2025
Priority date	Mar 3, 2023
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

An adjustable desk frame includes a first extendable table leg including a first outer housing, a first inner housing, and a first actuation mechanism to selectively extend and retract the first inner housing relative to the first outer housing, a second extendable table leg including a second outer housing, a second inner housing, and a second actuation mechanism to selectively extend and retract the second inner housing relative to the second outer housing, a motor configured to drive the first actuation mechanism to selectively extend and retract the first inner housing relative to the first outer housing, and a linkage coupling the motor to the second actuation mechanism such that the motor is configured to drive the second actuation mechanism in unison with the first actuation mechanism.

First claim

What is claimed is:

1 . An adjustable desk frame comprising:
a first extendable leg including a first outer housing, a first inner housing, and a first actuation mechanism to selectively extend and retract the first inner housing relative to the first outer housing; a second extendable leg including a second outer housing, a second inner housing, and a second actuation mechanism to selectively extend and retract the second inner housing relative to the second outer housing; a first motor configured to drive the first actuation mechanism to selectively extend and retract the first inner housing relative to the first outer housing; a first linkage coupling the first motor to the second actuation mechanism such that the first motor is configured to drive the second actuation mechanism in unison with the first actuation mechanism; a third extendable leg including a third outer housing, a third inner housing, and a third actuation mechanism to selectively extend and retract the third inner housing relative to the third outer housing; a fourth extendable leg including a fourth outer housing, a fourth inner housing, and a fourth actuation mechanism to selectively extend and retract the fourth inner housing relative to the fourth outer housing; a second motor configured to drive the third actuation mechanism to selectively extend and retract the third inner housing relative to the third outer housing; a second linkage coupling the second motor to the fourth actuation mechanism such that the second motor is configured to drive the fourth actuation mechanism in unison with the third actuation mechanism; a first crossbar coupling the first outer housing of the first extendable leg to the second outer housing of the second extendable leg, wherein the first linkage is offset from the first crossbar; a second crossbar coupling the third outer housing of the third extendable leg to the fourth outer housing of the fourth extendable leg, wherein the second linkage is offset from the second crossbar; a third crossbar coupling the first outer housing of the first extendable leg to the fourth outer housing of the fourth extendable leg; and a fourth crossbar coupling the second outer housing of the second extendable leg to the third outer housing of the third extendable leg, wherein the third crossbar and the fourth crossbar each include multiple segments that facilitate adjustable spacing between the first extendable leg and the second extendable leg relative to the third extendable leg and the fourth extendable leg.

2 . The adjustable desk frame of claim 1 , wherein the first motor is mounted to the first outer housing of the first extendable leg.

3 . The adjustable desk frame of claim 1 , wherein the first linkage includes a telescopic drive shaft.

4 . The adjustable desk frame of claim 3 , wherein the telescopic drive shaft includes an outer tube with a central lumen, an inner rod within the central lumen and a fitting configured to selectively fix a position of the inner rod within the central lumen relative to the outer tube.

5 . The adjustable desk frame of claim 4 , wherein the fitting is a threaded compression fitting.

6 . The adjustable desk frame of claim 1 , wherein the first extendable leg includes a linear actuator comprising a drive gear coupled to the first motor, and rotatably fixed relative the first outer housing, a threaded shaft coupled to the drive gear and extending within the first inner housing, and a threaded nut engaged with the threaded shaft to facilitate the extension and retraction of the first inner housing relative to the first outer housing.

7 . The adjustable desk frame of claim 6 ,
wherein the drive gear includes a right angle gear box with an input gear coupled to the first motor and an output gear coupled to the threaded shaft, and wherein a housing of the right angle gear box is coupled to the first outer housing.

8 . The adjustable desk frame of claim 6 , further comprising
a gear reducer between the first motor and the drive gear.

9 . The adjustable desk frame of claim 1 , wherein the first extendable leg includes a plurality of glide plates configured to mitigate friction between the first outer housing and the first inner housing.

10 . The adjustable desk frame of claim 1 , wherein the second extendable leg is mechanically equivalent to the first extendable leg such the second extendable leg extends and retracts in unison with the first extendable leg in response to rotation of the first motor.

11 . The adjustable desk frame of claim 1 , further comprising a desktop, wherein the first crossbar and the second crossbar are each attached to an underside of the desktop.

12 . The adjustable desk frame of claim 1 ,
wherein the first linkage is extendable to facilitate driving the second actuation mechanism in unison with the first actuation mechanism at various spacings between the first extendable leg and the second extendable leg, and wherein the second linkage is extendable to facilitate driving the third actuation mechanism in unison with the fourth actuation mechanism at various spacings between the third extendable leg and the fourth extendable leg.

13 . The adjustable desk frame of claim 1 , further comprising a control panel configured to deliver simultaneous signals to the first motor and the second motor such that each of the first extendable leg, the second extendable leg, the third extendable leg, and the fourth extendable leg extends and retracts in unison.

14 . The adjustable desk frame of claim 13 , wherein the control panel includes up and down buttons to raise and lower the adjustable desk frame.

15 . The adjustable desk frame of claim 1 , wherein the third crossbar and the fourth crossbar are telescoping crossbars, each including one or more inner segments that fit within one or more outer segments to facilitate the adjustable spacing.

16 . The adjustable desk frame of claim 1 , wherein the third crossbar includes:
a first segment coupled to the first outer housing of the first extendable leg; a second segment coupled to fourth outer housing of the fourth extendable leg; and a third segment between the first segment and the second segment, wherein a portion of the third segment overlaps one of the other segments of the third crossbar to facilitate adjustable spacing therebetween.

17 . The adjustable desk frame of claim 16 , wherein the first segment and the second segment include attachment points configured for fixing the third crossbar to an underside of a desktop.

18 . The adjustable desk frame of claim 16 , wherein the fourth crossbar is substantially similar to the third crossbar.

19 . A kit for an adjustable desk frame comprising:
a first extendable leg including a first outer housing, a first inner housing, and a first actuation mechanism to selectively extend and retract the first inner housing relative to the first outer housing; a second extendable leg including a second outer housing, a second inner housing, and a second actuation mechanism to selectively extend and retract the second inner housing relative to the second outer housing; a first motor configured to drive the first actuation mechanism to selectively extend and retract the first inner housing relative to the first outer housing; a first linkage configured to couple the first motor to the second actuation mechanism such that the first motor is configured to drive the second actuation mechanism in unison with the first actuation mechanism; a third extendable leg i

Assignees

• Cknapp Sales Inc

Inventors

• Meyer Brandon
• Welander Nicholas
• Fehr Micah

Classifications

• A47B21/02

  with vertical adjustable parts · CPC title

• A47B2200/0056

  with a motor, e.g. an electric motor · CPC title

• A47B2200/0051

  Telescopic · CPC title

• A47B9/20 Primary

  Telescopic guides · CPC title

• A47B9/04

  with vertical spindle · CPC title