US3930083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard panel for an electric switch contact
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1974-07-26
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Granted: 1975-12-30
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Expires: 1994-07-26
Abstract
Abstract A keyboard panel having a rigid panel board with a plurality of apertures and a resilient material filling the apertures. The resilient material has a force transmitting and concentrating projection at each of the apertures so that the resilient material develops a tactile feel as it resists deformation.
Inventors
- 👤 Philip C Pinkham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:57
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/50; H01H2209/00; H01H2209/018; H01H2215/00; H01H2221/00; H01H2221/002; H01H2221/05; H01H2223/00; H01H2223/01; H01H2223/024; H01H2223/056; Y; Y10; Y10T; Y10T428/00; Y10T428/22; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
A KEYBOARD PANEL COMPRISING: A. RIGID MEANS HAVING A PLURALITY OF APERTURES AND FURTHER HAVING FIRST AND SECOND SPACED-APART SURFACES, B. A LIP FLANGE EXTENDING FROM SAID RIGID MEANS RADIALLY INWARDLY INTO EACH OF SAID APERTURES, C. FLEXIBLE MEANS CARRIED BY SAID RIGID MEANS FILLING EACH OF SAID APERTURES SUBSTANTIALLY FLUSH WITH SAID FIRST SURFACE AND COVERING A SELECTED PORTION OF SAID SECOND SURFACE, SAID APERTURE LIP FLANGE RETAINING SAID FLEXIBLE MEANS TO SAID RIGID MEANS AT EACH OF SAID APERTURES, AND
Claim 2
Dependent Claim
82 words
A KEYBOARD PANEL COMPRISING: A. RIGID MEANS HAVING A PLURALITY OF APERTURES AND FURTHER HAVING FIRST AND SECOND SPACED-APART SURFACES, B. A LIP FLANGE EXTENDING FROM SAID RIGID MEANS RADIALLY INWARDLY INTO EACH OF SAID APERTURES, C. FLEXIBLE MEANS CARRIED BY SAID RIGID MEANS FILLING EACH OF SAID APERTURES SUBSTANTIALLY FLUSH WITH SAID FIRST SURFACE AND COVERING A SELECTED PORTION OF SAID SECOND SURFACE, SAID APERTURE LIP FLANGE RETAINING SAID FLEXIBLE MEANS TO SAID RIGID MEANS AT EACH OF SAID APERTURES, AND
Claim 3
Dependent Claim
16 words
The keyboard panel of claim 1 in which said rigid means is an apertured panel board.
Claim 4
Dependent Claim
15 words
The keyboard panel of claim 1 in which said flexible means is a resilient material.
Claim 5
Dependent Claim
14 words
The keyboard panel of claim 3 in which said resilient material is an elastomer.
Claim 6
Dependent Claim
26 words
The keyboard panel of Claim 1 in which said force transmitting and concentrating means is a projection of said flexible means at each of said apertures.
Claim 7
Dependent Claim
13 words
The keyboard panel of claim 5 in which said projection develops a mesa.
Claim 8
Dependent Claim
17 words
The keyboard panel of claim 1 in which said second surface is flush with said lip flanges.
Claim 9
Dependent Claim
29 words
The keyboard panel of claim 7 in which said flexible means has lateral portions suitably bonded to said second surface so that said flexible means provides an environmental seal.
Claim 10
Dependent Claim
27 words
The keyboard panel of claim 7 in which said flexible means is a resilient material bonded to said rigid means and further retained by said lip flange.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |