Patent US4132877A successfully refreshed from Google Patents.
US4132877A
Expired / Lapsed
US
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Removable keyboard switch
Assignee: Monroe Systems for Business Inc
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Filing: 1977-03-24
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Granted: 1979-01-02
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Expires: 1997-03-24
Abstract
Abstract An improved manually actuatable electric keyboard switch and retainer capable of being easily removed and reoriented or replaced to provide a different function.
Inventors
- 👤 Phillip R. Daigle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:20
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
A keyboard element capable of being readily inserted and removed from contact with a printed circuit board comprising: a first housing portion of generally rectangular configuration having first and second pairs of opposed walls; said first pair of walls being substantially planar and each wall of said second pair of walls having a relieved opening provided therein; a second housing portion of generally rectangular configuration superposed over said first housing portion and being fixedly mounted thereto; and a manually engageable element in supporting relationship with said second housing portion.
Claim 2
Dependent Claim
89 words
A keyboard element capable of being readily inserted and removed from contact with a printed circuit board comprising: a first housing portion of generally rectangular configuration having first and second pairs of opposed walls; said first pair of walls being substantially planar and each wall of said second pair of walls having a relieved opening provided therein; a second housing portion of generally rectangular configuration superposed over said first housing portion and being fixedly mounted thereto; and a manually engageable element in supporting relationship with said second housing portion.
Claim 3
Dependent Claim
30 words
A keyboard switch as set forth in claim 1, wherein: said relieved openings each comprise a back wall portion spaced from and parallel to the surface of its respective wall.
Claim 4
Dependent Claim
33 words
A keyboard switch as set forth in claim 2, wherein: each wall of said second pair of walls includes a pair of notches; each of said notches communicating with said back wall portion.
Claim 5
Dependent Claim
23 words
A keyboard switch as set forth in claim 2, wherein: each of said relieved opening back wall portions include a pair of slots.
Claim 6
Dependent Claim
22 words
A keyboard switch as set forth in claim 3, wherein: said slots are disposed on either side of said back wall portion.
Claim 7
Dependent Claim
39 words
A keyboard switch as set forth in claim 1, wherein: said second housing portion includes a pair of first and second walls substantially parallel to the corresponding first and second pair of walls associated with said first housing portion.
Claim 8
Dependent Claim
34 words
A keyboard switch as set forth in claim 6, wherein: the first and second pair of walls associated with said first housing portion are wider than the corresponding walls of said second housing portion.
Claim 9
Dependent Claim
26 words
A keyboard switch as set forth in claim 6, wherein: one pair of walls of said second housing portion is provided with at least one notch.
Claim 10
Dependent Claim
38 words
A keyboard switch as set forth in claim 8, wherein: said at least one notch extends from an edge of said first housing portion to an edge of the second housing portion opposite to said first housing portion.
Claim 11
Dependent Claim
20 words
A keyboard switch as set forth in claim 1, further including: actuator means projecting into one of said housing portions.
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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |