US4449763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective cover for keyboard machines
Assignee: Individual
•
Filing: 1981-10-23
•
Granted: 1984-05-22
•
Expires: 2001-10-23
Abstract
Abstract A protective cover for keyboard machines consisting of a transparent hood affixable to the machine housing and open at one side to admit the operator's hand, including a panel generally parallel to the keyboard face and spaced apart therefrom by a distance sufficient to allow normal hand and finger movements by the operator, but too close to permit any appreciable whole-hand movements normally to the keyboard whereby the operator cannot strike the keyboard buttons with excessive force which can damage the machine. The hood prevents access of spilled liquids, paper clips, coins, bits of metal or the like to the keyboard. Such foreign matter may find its way to the interior of the machine through slots and other openings of the keyboard, and cause malfunctioning thereof.
Inventors
- 👤 Loren A. Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:23
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
A protective cover for a keyboard machine having a housing presenting an upwardly facing keyboard carrying pushbuttons operable by depression thereof, said cover comprising: a. a hood including a transparent top wall generally parallel with and spaced above said keyboard by a distance sufficient to permit insertion of an operator's hand therebetween, but sufficiently small to require the operator to press said pushbuttons principally with finger movements and with only minimal movements of his whole hand normally to the keyboard, and to prevent any substantial whole-hand movements normally to the keyboard, said hood being open at one side to permit said insertion, and b. means operable to attach said hood firmly to the housing of said machine.
Claim 2
Dependent Claim
117 words
A protective cover for a keyboard machine having a housing presenting an upwardly facing keyboard carrying pushbuttons operable by depression thereof, said cover comprising: a. a hood including a transparent top wall generally parallel with and spaced above said keyboard by a distance sufficient to permit insertion of an operator's hand therebetween, but sufficiently small to require the operator to press said pushbuttons principally with finger movements and with only minimal movements of his whole hand normally to the keyboard, and to prevent any substantial whole-hand movements normally to the keyboard, said hood being open at one side to permit said insertion, and b. means operable to attach said hood firmly to the housing of said machine.
Claim 3
Dependent Claim
30 words
A protective cover as recited in claim 1 wherein said top wall of said hood is spaced apart from said keyboard by a distance of approximately 3 to 6 inches.
Claim 4
Dependent Claim
36 words
A protective cover as recited in claim 1 wherein said top wall of said hood is extended outwardly from said keyboard at the open side of said hood, whereby to overhang and better protect said keyboard.
Claim 5
Dependent Claim
50 words
A protective cover as recited in claim 1 wherein said hood also includes side walls depending from said top wall thereof at all sides thereof except its open side, and wherein said attaching means is operable to attach the lower edge portions of said side walls to said machine housing.
Claim 6
Dependent Claim
63 words
A protective cover as recited in claim 4 wherein said side walls are continuous around the entire periphery of said hood except at its open side, and wherein their lower edge portions extend downwardly past the associated edges of said machine housing, whereby to form a skirt preventing the passage of liquid between said housing and the lower edges of said side walls.
Claim 7
Dependent Claim
79 words
A protective cover as recited in claim 4 wherein said side walls are continuous around the entire periphery of said hood except at its open side, and wherein their lower edge portions overlie associated surfaces of said machine housing, and wherein said attaching means comprises a continuous strip of adhesive applied to the inner surface of the lower edge portions of said side wall, along their entire length, and operable to adhere to the machine housing surfaces overlaid thereby.
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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) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |