US4321441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyswitch arrangement
Assignee: Xerox Corp
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Filing: 1980-02-04
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Granted: 1982-03-23
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Expires: 2000-02-04
Abstract
Abstract A keyswitch arrangement including an array of switches formed on a flexible dielectric substrate wherein each switch includes a stationary conductive contact lying in the plane of the substrate and an adjacent movable conductive contactor carried on a flap cut out of the substrate and bent along a hinged line located between the contact and the contactor. The stationary contact and movable contactor are both formed on the same side of the substrate and are normally disposed in the open switch position in confronting relationship with the flap at an acute angle to the plane of the substrate.
Inventors
- 👤 David D. Thornburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/78; H01H13/785; H01H13/702; H01H2201/00; H01H2201/022; H01H2201/026; H01H2205/00; H01H2205/01; H01H2207/00; H01H2207/004; H01H2207/012; H01H2207/014; H01H2209/00; H01H2209/068; H01H2209/08; H01H2215/00; H01H2215/002; H01H2221/00; H01H2221/002; H01H2221/004; H01H2221/008; H01H2221/016; H01H2221/024; H01H2221/03; H01H2223/00; H01H2223/034; H01H2227/00; H01H2227/018
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
174 words
A keyswitch arrangement including a substrate on which a plurality of switch elements are formed, said switch arrangement characterized in that said substrate is a flexible dielectric material; each of said switch elements comprises stationary conductive contact means and movable conductive contactor means, each of said conductive means being positioned adjacent one another on one side of said substrate; and said substrate is provided with incised portions around each of said movable contactor means to form flaps, each carrying one of said contactor means, said substrate further having nonincised hinges integral therewith associated with each flap, so that each of said hinges is located between each of said contact means and its related movable contactor means to allow said switch elements to lie in confronting relationship with one another, each of said flaps having been passed through and beyond the region of elastic deformation and into the region of plastic deformation of said substrate material and disposed at an acute angle to the plane of said substrate when in its operative open switch orientation.
Claim 2
Dependent Claim
174 words
A keyswitch arrangement including a substrate on which a plurality of switch elements are formed, said switch arrangement characterized in that said substrate is a flexible dielectric material; each of said switch elements comprises stationary conductive contact means and movable conductive contactor means, each of said conductive means being positioned adjacent one another on one side of said substrate; and said substrate is provided with incised portions around each of said movable contactor means to form flaps, each carrying one of said contactor means, said substrate further having nonincised hinges integral therewith associated with each flap, so that each of said hinges is located between each of said contact means and its related movable contactor means to allow said switch elements to lie in confronting relationship with one another, each of said flaps having been passed through and beyond the region of elastic deformation and into the region of plastic deformation of said substrate material and disposed at an acute angle to the plane of said substrate when in its operative open switch orientation.
Claim 3
Dependent Claim
49 words
The keyswitch arrangement defined in claim 1 wherein first conductive means formed on said substrate connects said stationary conductive contact means to first terminal means on said substrate; and second conductive means formed on said substrate connects said movable conductive contact means to second terminal means on said substrate.
Claim 4
Dependent Claim
35 words
The keyswitch arrangement defined in claim 2 wherein said first conductive means is formed on said one side of said substrate; and said second conductive means is formed on the opposite side of said substrate.
Claim 5
Dependent Claim
32 words
The keyswitch arrangement defined in either claim 2 or claim 3 wherein said conductive contact means, said conductive contactor means and said first and second conductive means are etched on said substrate.
Claim 6
Dependent Claim
32 words
The keyswitch arrangement defined in either claim 2 or claim 3 wherein said conductive contact means, said conductive contactor means and said first and second conductive means are printed on said substrate.
Claim 7
Dependent Claim
28 words
The keyswitch arrangement defined in claim 3 wherein said movable conductive contactor means is connected to said second conductive means via plated through openings passing through said substrate.
Claim 8
Dependent Claim
42 words
The keyswitch arrangement defined in claim 1 in cooperation with a keyboard on which are supported a plurality of keys, said keys being of the plunger type wherein plungers depend from said keys for closing said keyswitches when said keys are depressed.
Claim 9
Dependent Claim
21 words
The keyswitch arrangement defined in claim 1 in cooperation with a keyboard on which are supported a plurality of cantilever keys.
Claim 10
Dependent Claim
28 words
The keyswitch and keyboard arrangement defined in claim 8 wherein the supported portions of said cantilever keys comprise hinges which lie in opposed relation to said flap hinges.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-22 | 1985-09-21 | 1986-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-22 | 1989-09-21 | 1990-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-22 | 1993-09-21 | 1994-03-23 | $7700.00 | Window Closed / Lapsed |