WIRELESS FOOT PEDAL CONTROLLER FOR WELDING SYSTEM

• US 20110248009A1
• Filed: 06/21/2011
• Published: 10/13/2011
• Est. Priority Date: 05/01/2008
• Status: Active Grant

• Current Assignee: Lincoln Global Incorporated (Lincoln Electric Holdings Incorporated)
• Original Assignee: Freedom Special Technologies, Inc.
• Inventors: Noack, Hans, Long, Michael A., Falter, Hermann Brian
• Granted Patent: US 8,653,414 B2
• Time in Patent Office: Days
• US Class Current: 219/132
• CPC Class Codes: G05G 1/305 Compound pedal co-operating with two or more controlled members
• CPC Class Codes: G05G 1/38 comprising means to continuously detect pedal position
• CPC Class Codes: G05G 1/445 about a central fulcrum
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/49863 with prestressing of part
• CPC Class Codes: Y10T 74/20888 Pedals

Abstract

A wireless controller (14) comprises a housing including a first portion (20a) and a second portion (20b) moveably attached to the first portion (20a). The first portion (20a) supports the controller (14) relative to an external surface and is adjustable between an elevated position and a collapsed position, wherein a first end of the first portion (20a) is elevated relative to a second end of the first portion (20a) when the first portion is in the elevated position. A sensing element (22) senses a position of the second portion (20b) relative to the first portion (20a) and provides a corresponding position signal. A transmitter (24) is coupled with the sensing element (22) and wirelessly transmits the position signal.

Claims

1. A wireless controller comprising:

a housing including a first portion and a second portion moveably attached to said first portion, said first portion supporting said controller relative to an external surface, said first portion adjustable between an elevated position and a collapsed position, wherein a first end of said first portion is elevated relative to a second end of said first portion when said first portion is in said elevated position;

a sensing element for sensing a position of said second portion relative to said first portion and providing a corresponding position signal; and

a transmitter coupled with said sensing element for wirelessly transmitting said position signal.

2. The wireless controller as set forth in claim 1, further comprising an elevator element moveable between a stowed position corresponding to said collapsed position and a deployed position corresponding to said elevate position, wherein said elevator element directly engages said external surface and supports said first end of said first portion when in said deployed position and is separated from said external surface by a space when in said stowed position.

3. The wireless controller as set forth in claim 2, wherein said elevator element includes a substantially U-shaped bracket in pivotal engagement with said first portion and moveable between said stowed position and said deployed position, and wherein said first portion includes a substantially U-shaped channel for receiving said bracket when said bracket is in said stowed position.

4. The wireless controller as set forth in claim 1, said housing further comprising an outwardly radially-extending peripheral flange.

5. The wireless controller as set forth in claim 4, wherein said flange is located proximate a bottom of said first portion and engages said external surface when said first portion is in said collapsed position.

6. The wireless controller as set forth in claim 1, further comprising:

an intermediate element for actuating said sensing element, said intermediate element in sliding engagement with said second portion of said housing; and

a spring element for biasing said intermediate against said pivoting portion of said housing.

7. The wireless controller as set forth in claim 6, wherein said first portion of said housing defines an access port proximate said spring element for granting access to said spring element via said access port.

8. The wireless controller as set forth in claim 1, wherein said housing is constructed at least in part of a long fiber plastic material including glass fibers.

9. The wireless controller as set forth in claim 1, wherein said long fiber plastic material comprises between 10% and 50% glass fibers.

10. A wireless controller comprising:

a housing with a base portion and a pivoting portion pivotable relative to said base portion;

a rotary potentiometer for providing a position signal;

a pinion coupled with said rotary potentiometer;

a rack in intermeshing engagement with said pinion and in sliding engagement with said pivoting portion of said housing;

a spring element for biasing said rack against said pivoting portion of said housing; and

a transmitter coupled with said potentiometer for wirelessly transmitting said position signal.

11. The wireless controller as set forth in claim 10, wherein said spring element includes a torsion spring engaging said base and said rack and biasing said rack against said pivoting portion of said housing.

12. The wireless controller as set forth in claim 11, wherein said base portion of said housing defines an access port proximate said torsion spring for granting access to said torsion spring through said base portion.

13. The wireless controller as set forth in claim 10, wherein said pivoting portion of said housing includes a guide channel and said rack includes an elongated guide track in mating engagement with said guide channel.

14. The wireless controller as set forth in claim 10, said base portion further comprising a radially-extending peripheral flange, wherein said flange extends radially outwardly further than any other portion of said base portion.

15. The wireless controller as set forth in claim 14, wherein said flange is located proximate a bottom of said base portion for engaging an external surface when said controller is resting on said external surface.

16. The wireless controller as set forth in claim 10, wherein said housing is constructed at least in part of a long fiber plastic material including glass fibers.

17. The wireless controller as set forth in claim 10, wherein said long fiber plastic material comp'"'"'rises between 10% and 50% glass fibers.

18. A wireless control system for a welding system including an electrical control interface, the control system comprising:

a foot pedal presenting a first end and a second end, said pedal including—

a pivotable portion,

a sensing element coupled with said pivotable portion and operable to sense a position of said pivotable portion and provide a corresponding pedal position signal,

a transmitter coupled with said sensing element and operable to wirelessly transmit said pedal position signal, and

an elevator element moveable between a stowed position and a deployed position, wherein said elevator supports said first end of said pedal in an elevated position relative to said second end when in said deployed position; and

a receiver including—

an antenna operable to wirelessly receive the pedal position signal generated by the foot pedal,

a processor coupled with the antenna and operable to process the received pedal position signal, and

a connector coupled with the processor and operable to connect with the electrical control interface associated with the welding system to provide the processed pedal position signal thereto.

19. A method of assembling a wireless foot pedal controller, said foot pedal controller including a housing with a base portion and a pivoting portion, said method comprising:

compressing a spring element by engaging said spring element through an access port of said base portion;

rotating a pinion to a desired starting point, said pinion being fixedly attached to a sensing element;

placing a rack against said spring element and in intermeshing engagement with said pinion;

attaching said pivoting portion to said base portion such that said rack is in sliding engagement with a receiving bracket of said pivoting portion; and

releasing said spring element.

20. The method as set forth in claim 19, further comprising aligning a groove of one of said rack and said receiving bracket with a rail of the other of said rack and said receiving bracket such that said groove is in sliding engagement with said rail.