Granted Patent B2

US 12,492,497 · App. 18/586,782 · Granted Dec 9, 2025

Inventor: Steven Marcangelo (Edgewater, FL)

Assignee: Sttchex Performance Engineering LLC

D05B29/02D05B27/06D05B55/14

Abstract

Claims (101)

1 . A kit for adding or replacing an automated upper walking foot stepping height adjustment to a sewing machine, the kit comprising:

a mounting assembly including an actuator bracket;

a power driven actuator coupled to the actuator bracket and including an actuator shaft that extends and retracts;

a drive assembly including:

a drive shaft,

a drive arm coupled to the drive shaft and the actuator shaft, and

a guide coupled to the drive shaft; and

a needle drive assembly including:

a variable drive crank coupled to the guide and configured to be coupled to a needle drive shaft of the sewing machine, and

a needle drive lever configured to be coupled to the needle drive shaft;

wherein selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot.

2 . The kit of claim 1 , further comprising a needle assembly coupled to the needle drive lever.

3 . A sewing machine with an automated upper walking foot stepping height adjustment, the sewing machine comprising:

an actuator including an actuator shaft that extends and retracts;

a drive assembly including:

a drive shaft,

a drive arm coupled to the drive shaft and coupled to the actuator shaft, and

a guide coupled to the drive shaft;

a needle drive assembly including:

a needle drive shaft,

a variable drive crank coupled to the needle drive shaft and the guide, and

an upper walking foot coupled to the variable drive crank; and

a needle assembly coupled to the needle drive shaft;

wherein selectively extending and retracting the actuator shaft adjusts a stepping height of the upper walking foot.

4 . The sewing machine of claim 3 , further comprising a needle drive lever coupled to the needle drive shaft;

wherein the needle assembly is coupled to the needle drive lever.

5 . The sewing machine of claim 3 , further comprising a presser foot coupled to the variable drive crank;

wherein selectively extending and retracting the actuator shaft sets an uppermost travel limit of the presser foot.

6 . The sewing machine of claim 3 , further comprising a control coupled to the actuator, and activation of the control permits selective extension and retraction of the actuator shaft.

7 . The sewing machine of claim 3 , wherein the sewing machine further comprises a pin;

wherein the variable drive crank includes an elongated slot and the pin moves within the elongated slot; and

wherein selectively extending and retracting the actuator shaft adjusts a position of the pin along a length of the elongated slot.

8 . A kit for adding or replacing an automated upper walking foot stepping height adjustment to a sewing machine, the kit comprising:

a power driven actuator configured to be coupled to the sewing machine and including an actuator shaft that extends and retracts;

a drive assembly including:

a drive shaft,

a drive arm coupled to the drive shaft and the actuator shaft, and

a guide coupled to the drive shaft; and

a needle drive assembly including:

a needle drive shaft configured to replace a needle drive shaft of the sewing machine,

a needle drive lever coupled to the needle drive shaft, and

a variable drive crank coupled to the needle drive shaft and the guide;

wherein selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot.

9 . The kit of claim 8 , further comprising a needle assembly coupled to the needle drive lever.

10 . A kit for adding or replacing an automated upper walking foot stepping height adjustment to a sewing machine, the kit comprising:

a mounting assembly including an actuator bracket;

an actuator coupled to the actuator bracket and including an actuator shaft that extends and retracts;

a drive assembly including:

a drive shaft,

a drive arm coupled to the drive shaft and the actuator shaft, and

a guide coupled to the drive shaft;

a needle drive lever coupled to the needle drive shaft; and

a needle drive assembly including a variable drive crank coupled to the guide and configured to couple to a needle drive shaft of the sewing machine;

wherein selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot.

11 . A kit for adding or replacing an automated upper walking foot stepping height adjustment to a sewing machine, the kit comprising:

a mounting assembly including an actuator bracket;

an actuator coupled to the actuator bracket and including an actuator shaft that extends and retracts;

a drive assembly including:

a drive shaft,

a drive arm coupled to the drive shaft and the actuator shaft, and

a guide coupled to the drive shaft;

a needle drive lever coupled to the needle drive shaft;

a needle assembly coupled to the needle drive lever; and

a needle drive assembly including a variable drive crank coupled to the guide and configured to couple to a needle drive shaft of the sewing machine;

wherein selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot.

12 . A sewing machine with an automated upper walking foot stepping height adjustment, the sewing machine comprising:

an actuator including an actuator shaft that extends and retracts;

a drive assembly including:

a drive shaft,

a drive arm coupled to the drive shaft and coupled to the actuator shaft, and

a guide coupled to the drive shaft;

a needle drive assembly including:

a needle drive shaft,

a variable drive crank coupled to the needle drive shaft and the guide, and

an upper walking foot coupled to the variable drive crank;

a needle drive lever coupled to the needle drive shaft; and

a needle assembly coupled to the needle drive shaft and the needle drive lever;

wherein selectively extending and retracting the actuator shaft adjusts a stepping height of the upper walking foot.

13 . A kit for adding or replacing an automated upper walking foot stepping height adjustment to a sewing machine, the kit comprising:

an actuator configured to be coupled to the sewing machine and including an actuator shaft that extends and retracts;

a drive assembly including:

a drive shaft,

a drive arm coupled to the drive shaft and the actuator shaft, and

a guide coupled to the drive shaft;

a needle drive assembly including:

a variable drive crank coupled to the guide,

a needle drive shaft coupled to the variable drive crank and configured to replace a needle drive shaft of the sewing machine; and

a needle drive lever coupled to the needle drive shaft;

wherein selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot.

14 . A kit for adding or replacing an automated upper walking foot stepping height adjustment to a sewing machine, the kit comprising:

an actuator configured to be coupled to the sewing machine and including an actuator shaft that extends and retracts;

a drive assembly including:

a drive shaft,

a drive arm coupled to the drive shaft and the actuator shaft, and

a guide coupled to the drive shaft;

a needle drive assembly including:

a variable drive crank coupled to the guide,

a needle drive shaft coupled to the variable drive crank and configured to replace a needle drive shaft of the sewing machine;

a needle drive lever coupled to the needle drive shaft; and

a needle assembly coupled to the needle drive lever;

wherein selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot.

Assignments (1)

Continuity (2)

References Cited (26)