Claims
- 1. The method of assembling a contact switch comprising:
- supporting a switch circuit pattern on a unitary sheet of flexible and resilient insulation membrane having a first and second section separated by a fold line and a tail section, said switch circuit having a contact point supported by said first membrane section and a contactor element supported by said second membrane section, said circuit patterns communicating with said contact point and contactor element terminating at said membrane tail section;
- folding said first and second membrane sections upon themselves along said fold line so that said contactor element supported by said second membrane section is positioned above and in registry with said contact point supported by said first membrane section; and
- positioning a resilient dome having upper and lower electrically conductive surfaces which are in communication with each other between said contact point and said contactor element so that the contactor element will be maintained in electrical contact with the upper surface of said dome and, in its nonflexed, rest position, said dome will not electrically contact the circuit pattern supported by said first membrane section.
- 2. The method of claim 1, further comprising the step of inserting a flexible, electrically non-conductive spacer sheet intermediate said first and second membrane sections into a position wherein cut-out portions formed therein will be in registry with said contact point, dome and contactor element.
- 3. The method of claim 2, further comprising the step of securing said first and second membrane sections to said intermediate spacer sheet by means of an adhesive coating deposited on each side thereof.
- 4. The method of claim 1, further comprising the steps of:
- forming a cut-out portion in said second membrane section surrounding and separating said contactor element into two flaps;
- lifting said flaps;
- positioning said resilient dome within said cut-out portion above said contact point; and
- folding said flaps down in electrical contact with the upper surface of said dome.
- 5. The method of claim 1, further comprising the step of placing a flexible, electrically non-conductive cover sheet above said second membrane section in a manner so as to seal said contact point, dome and contactor element between it and said first membrane section.
- 6. The method of claim 5, further comprising the step of inserting a flexible, electrically non-conductive upper spacer sheet between said second membrane section and cover sheet into a position wherein cut-out portions formed therein will be in registry with said dome and contactor element.
- 7. The method of claim 6, further comprising the step of securing said cover sheet and said second membrane section to said upper spacer sheet by means of an adhesive coating deposited on each side thereof.
Parent Case Info
This application is a division of U.S. Pat. application Ser. No. 171,726, filed on July 24, 1980 and now U.S. Pat. No. 4,314,117.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4033030 |
Robinson et al. |
Jul 1977 |
|
4066851 |
White et al. |
Jan 1978 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
171726 |
Jul 1980 |
|