Switch assembly and method of using same

• US 9,679,712 B2
• Filed: 10/16/2013
• Issued: 06/13/2017
• Est. Priority Date: 10/16/2012
• Status: Active Grant

• Current Assignee: Delta Systems Inc.
• Original Assignee: Delta Systems Inc.
• Inventors: Nohra, Tanios Elias, Kirbawy, Isaac D.
• Primary Examiner(s): Pape, Zachary M
• Assistant Examiner(s): Burtner, Douglas
• Application Number:
  US14/054,968
• Publication Number:
  US 20140104796A1
• Time in Patent Office: 1,336 Days
• CPC Class Codes: G08C 23/00 Non-electrical signal transmission systems, e.g. optical systems
• CPC Class Codes: G08C 23/04 using light waves, e.g. infrared
• CPC Class Codes: H01H 13/00 Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch wherein the operating part is flexible H01H17/00
• CPC Class Codes: H01H 13/023 Light-emitting indicators for multi-layer switches H01H13/83
• CPC Class Codes: H01H 13/12 Movable parts; Contacts mounted thereon
• CPC Class Codes: H01H 13/14 Operating parts, e.g. push-button
• CPC Class Codes: H01H 13/183 for actuation by moving a closing member, e.g. door, cover H01H13/186, H01H27/002 take precedence; the switch controlling enclosed equipment H01H9/226
• CPC Class Codes: H01H 13/52 the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
• CPC Class Codes: H01H 2009/164 the light emitting elements being incorporated in and movable with the operating part
• CPC Class Codes: H01H 9/54 Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere

Abstract

A switch assembly and method of using same comprises a switch assembly for operating a power take off unit on a lawn tractor, the switch assembly further includes a housing supporting a selectively locatable activation knob facilitated by an actuation assembly and an internal switch arrangement coupled to a printed circuit board within the housing. The internal switch arrangement comprises a microcontroller and switch for determining the relative position of the selectively locatable activation knob and provides a digital output signal for enabling or disabling a power take off unit based on the digital output signal.

Claims

1. A switch assembly for operating a device or performing a safety function for power equipment, the switch assembly comprising:

a housing supporting a selectively locatable activation knob facilitated by an actuation assembly;

an internal switch arrangement coupled to a printed circuit board within said housing, the internal switch arrangement comprising a light sensing switch for determining the relative position of said selectively locatable activation knob and providing a low current digital output signal ranging from 10 mA to 60 mA for enabling or disabling operation of a power equipment device or power equipment safety function; and

a control module for receiving said digital output signal, the control module configured to decode said digital output signal to activate or deactivate the device or the safety function for the power equipment with a high current signal from 3 A to 6 A.

2. The switch assembly of claim 1 wherein said light sensing switch of the internal switch arrangement comprises a plurality of optical light sensors or infrared light sensors for determining multiple positions of the activation knob.

3. The switch assembly of claim 1 wherein said switch assembly is remotely located from said control module.

4. The switch assembly of claim 3 wherein said switch assembly sends and receives data from said control module according to a wire communication protocol.

5. The switch assembly of claim 4 wherein said control module sends and receives data from said internal switch assembly according to a wireless communication modules.

6. The switch assembly of claim 1 wherein said internal switch arrangement is a non-contact switch configuration.

16. The switch assembly of claim 1, wherein the light sensing switch comprises an optical light sensing switch or an infrared light sensing switch.

7. A switch assembly for operating a power take off unit of a lawn tractor, the switch assembly comprising:

a housing supporting a selectively locatable activation knob facilitated by an actuation assembly, the actuation assembly including;

a support;

a vane coupled to the support;

at least one spring configured to bias the support to position the vane; and

at least one non-contact sensor;

an internal switch arrangement coupled to a printed circuit board within said housing, the internal switch arrangement including;

a microcontroller; and

a light sensing switch in communication with the microcontroller, the switch configured to detect the relative position of said selectively locatable activation knob and providing a low digital output signal ranging from 10 mA to 60 mA for enabling or disabling operation of the power take off unit; and

a control module for receiving said digital output signal, the control module configured to decode said digital output signal to activate or deactivate the power take off unit with a high current signal from 3 A to 6 A.

wherein the internal switch arrangement is configured to communicate with the at least one sensor of the actuation assembly, the light sensing switch being configured to determine the presence of the vane relative to the at least one sensor, and

further wherein the actuation assembly is configured to position the knob such that the switch arrangement detects the position of the knob and forms the corresponding digital output.

8. The switch assembly of claim 7 wherein said switch assembly is remotely located from said control module.

9. The switch assembly of claim 7 wherein said switch assembly sends and receives data from said control module according to a wireless communication protocol.

10. The switch assembly of claim 7 wherein said control module sends and receives data from said internal switch assembly according to a wireless communication protocol.

11. A method for operating a device or performing a safety function on a lawn tractor, comprising the steps of:

providing a switch assembly that includes;

a housing supporting a selectively locatable activation knob facilitated by an actuation assembly;

an internal switch arrangement coupled to a printed circuit board within said housing, the internal switch arrangement comprising a light switch; and

determining the relative position of said selectively locatable activation knob using the light sensing switch;

providing a low current digital output signal from 10 mA to 60 mA based on the relative position of said selectively locatable activation knob;

receiving said digital output signal using the control module;

decoding said digital output signal; and

in response to the digital output signal, communication, by the control module, a high current signal from 3 A to 6 A to activate or deactivate the lawn tractor device or safety function based on the digital output signal.

12. The method of claim 11 further comprising the step of remotely locating said control module from said internal switch arrangement.

13. The method of claim 11 further comprising the step of using a wireless communication protocol for sending and receiving data from said internal switch assembly.

14. The method of claim 11 further comprising the step of using a wireless communication protocol for sending and receiving data from said control module.

15. A switch assembly for operating a device or performing a safety function for power equipment, the switch assembly comprising:

a housing supporting a selectively locatable activation knob facilitated by an actuation assembly and sealed from external light; and

an internal switch arrangement coupled to a printed circuit board within said housing, the internal switch arrangement comprising a light sensing switch for determining the relative position of said selectively locatable activation knob and providing a low current digital output signal ranging from 10 mA to 60 mA for enabling or disabling operation of a power equipment device or power equipment safety function, the activation knob movably connected to one of said switch arrangement and a vane said switch; and

a control module for receiving said digital output signal, the control module configured to decode said digital output signal to activate or deactivate the device or the safety function for the power equipment with a high current signal from 3 A to 6 A.