Capacitive switching panel

• US 4,377,049 A
• Filed: 05/22/1980
• Issued: 03/22/1983
• Est. Priority Date: 05/22/1980
• Status: Expired due to Term

• Current Assignee: PepsiCo Incorporated
• Original Assignee: PepsiCo Incorporated
• Inventors: Strowe, Robert J., Simon, Donald R.
• Primary Examiner(s): Mancene, Gene
• Assistant Examiner(s): Foycik, Michael J.
• Application Number:
  US06/152,523
• Time in Patent Office: 1,034 Days
• Field of Search: 340/365 R, 340/365 C, 340/365 VL, 40/491, 40/465, 40/553, 40/574, 40/575, 40/16, 40/16.4, 40/10, 40/337, 40/336, 40/319, 200/5 A, 200/DIG. 1, 200/309, 200/312, 200/313, 434/339, 434/335, 221/5, 221/2, 221/8
• US Class Current: 40/465
• CPC Class Codes: G09F 3/18 Casings, frames or enclosures for labels
• CPC Class Codes: H01H 2219/002 replaceable; adaptable
• CPC Class Codes: H01H 2219/008 Adhesive
• CPC Class Codes: H03K 17/9622 using a plurality of detectors, e.g. keyboard
• CPC Class Codes: H03K 2017/9615 using three electrodes per touch switch

Abstract

An improved selection panel having a plurality of touch-actuated capacitive switches thereon. Each capacitive switch in the panel includes a transparent glass substrate having transparent conductive coatings on opposite sides thereof to form a capacitor. A display support is positioned behind and adjacent to the plurality of capacitive switches, and provides a separate display card support for each capacitive switch. A removable display card is positioned in each separate support in a manner such that each of the display cards may be changed periodically.

Claims

1. An improved selection panel for a vending machine having a plurality of touch-activated capacitive switches and the facility to readily change the visible indicia associated with each switch such that the visible indicia and the product associated therewith can be conveniently changed to change the products vended by the machine, comprising:

a. a transparent substrate;

b. first and second transparent conductive coatings on opposite sides of said substrate forming portions of each capacitive switch, with the transparent coatings allowing indicia positioned behind the coated substrate to be visible therethrough;

c. an opaque delineation pattern for the substrate for separating the different areas of the different capacitive switches;

d. a frame positioned behind and adjacent to said coated substrate for supporting a plurality of retangular indicia tabs associated with the plurality of switches such that the indicia tabs are supported adjacent to said coated substrate and visible therethrough to indicate the type of product vended by each switch, said frame being substantially coextensive with said delineation pattern such that the lines of the delineation pattern obscure the members of the frame from view, said frame having two frame members on opposite sides of each capacitive switch providing opposed holders for each switch to support a rectangular indicia tab associated therewith such that the indicia associated with each switch is conveniently changeable by replacement of its indicia tab.

2. An improved selection panel as claimed in claim 1, said frame including a ladder-like array of rods positioned adjacent to said substrate, and each said removable indicia being slideable between two adjacent rods.

3. An improved selection panel as claimed in claim 1, said opposed holders comprising opposed U-shaped slots.

4. An improved selection panel as claimed in claim 1, said plurality of switches being vertically places relative to one another.

5. An improved selection panel as claimed in claim 1, each removable indicia tab being a rectangular tab of paper.

6. An improved selection panel as claimed in claim 1 or 2 or 3 or 4 or 5, including a metal barrier panel provided behind the substrate to prevent access to the inside of the machine in the event of breakage of said substrate.