US4802779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard
Assignee: US Philips Corp
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Filing: 1987-11-06
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Granted: 1989-02-07
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Expires: 2007-11-06
Abstract
Abstract Keyboard comprising a handle (8,9) intended to prevent an elongate key (4) from being depressed obliquely. In order to simplify the operation of assembling/disassembling the key, the latter comprises an inclined surface (2) and the handle is fixed to the chassis (13) by means of a hook (1) of high elasticity, which permits the handle to be positioned in a slot (3) of the key when the latter is depressed.
Inventors
- 👤 Jean-Luc Allaire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:10
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/02; H01H3/12; H01H3/122
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
231 words
A keyboard comprising a chassis with a main section and provided with an elongate key and guide means, said key being slidable along said guide means of said chassis, said keyboard having a handle intended to prevent the key from being depressed obliquely, said handle being pivotable about an axis perpendicular to the sliding direction of said key, said handle being formed of a wire shaft each end of which is folded twice at right angles to form two U-shaped sections each with a pin parallel to the rest of the shaft, said key having two slots perpendicular to said sliding direction, each pin being slidably fitted in an associated slot of said key, said chassis being provided with elastic connection means for mounting said handle, each slot of said key being open at one end in order to permit the entrance of its respective pin, said key being provided with an inclined surface for each slot leading to the opening of its associated slot, each said inclined surface being on the side of said key away from the main section of said chassis, said elastic connection means permitting said pins to follow said inclined surface and to enter each of said slots thereby connecting said key to said chassis, said elastic connection means and said inclined surface forming a releasing means for readily releasing said handle pins from said slots.
Claim 2
Dependent Claim
231 words
A keyboard comprising a chassis with a main section and provided with an elongate key and guide means, said key being slidable along said guide means of said chassis, said keyboard having a handle intended to prevent the key from being depressed obliquely, said handle being pivotable about an axis perpendicular to the sliding direction of said key, said handle being formed of a wire shaft each end of which is folded twice at right angles to form two U-shaped sections each with a pin parallel to the rest of the shaft, said key having two slots perpendicular to said sliding direction, each pin being slidably fitted in an associated slot of said key, said chassis being provided with elastic connection means for mounting said handle, each slot of said key being open at one end in order to permit the entrance of its respective pin, said key being provided with an inclined surface for each slot leading to the opening of its associated slot, each said inclined surface being on the side of said key away from the main section of said chassis, said elastic connection means permitting said pins to follow said inclined surface and to enter each of said slots thereby connecting said key to said chassis, said elastic connection means and said inclined surface forming a releasing means for readily releasing said handle pins from said slots.
Claim 3
Dependent Claim
22 words
A keyboard as claimed in claim 1, wherein the opening of each slot (3) is turned towards the exterior of the key.
Claim 4
Dependent Claim
39 words
A keyboard as claimed in any one of claims 1 or 2, wherein said elastic connection means is formed by at least one elastic hook (1), whose elasticity allows the introduction of the pins (9) into the slots (3).
Claim 5
Dependent Claim
22 words
A keyboard as claimed in claim 3, wherein the hook (1) comprises a folded part (14) intended to increase its effective length.
Claim 6
Dependent Claim
24 words
A keyboard as claimed in claim 3, wherein the elastic hook (1,14) is moulded in one piece with the chassis (13) from plastic material.
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) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |