Patent EP0104709A2 successfully refreshed from Google Patents.
EP0104709A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Portable device including manual operation via a plurality of keys
Assignee: Van Dalen Johannes
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Filing: 1983-09-26
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Granted: —
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Expires: 2003-09-26
Abstract
Abstract Portable device including manual operation via a plurality of keys to input characters on the basis of the principle of combination wherein the keys in an ergonomically fitted way are arranged such that the device is adapted to be both supported and operated by one hand. The device may be a round/oval/eggshaped tabloid, fanshaped or cylindrical pocket calculator, or the receiver of a telephone set.
Inventors
- 👤 Hendrik Van Dalen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:39
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/0202; H04M1/0279; H04M1/0281; G; G06; G06F; G06F15/00; G06F15/02; G06F15/0225; G06F3/00; G06F3/01; G06F3/02; G06F3/023; G06F3/0233; G06F3/0235
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
48 words
Portable device including manual operation via a plurality of keys to input characters on the basis of the principle of combination, characterized in that the keys in an ergonomically fitted way are arranged such that the device is adapted to be both supported and operated by one hand.
Claim 2
Dependent Claim
48 words
Portable device including manual operation via a plurality of keys to input characters on the basis of the principle of combination, characterized in that the keys in an ergonomically fitted way are arranged such that the device is adapted to be both supported and operated by one hand.
Claim 3
Dependent Claim
34 words
Device according to claim 1 and comprising a pocket calculator having a reading window at the top, characterized in that the calculator presents a generally rectangular shape, the keys being provided on the sides.
Claim 4
Dependent Claim
24 words
Device according to claim 2, characterized in that the calculator presents a round /oval/ eggshaped tabloid form having the reading window in its middle.
Claim 5
Dependent Claim
21 words
Device according to claim 2, characterized in that the calculator has a fanshaped form having the reading window in its middle.
Claim 6
Dependent Claim
30 words
Device according to claim 1 and comprising a pocket calculator is in the form of a cylinder having the keys on the shell and the reading window at the top.
Claim 7
Dependent Claim
20 words
Device according to claim 1 and comprising a telephone set, characterized in that the keys are arranged on the receiver.
Claim 8
Dependent Claim
19 words
Device according to any preceeding claim, characterized in that means are provided for attaching the device to the body.
Claim 9
Dependent Claim
48 words
Device according to claim 1 and serving as input for a typewriter, characterized in that the device is in the form of a grip designed as joy stick rotatable over a small angle in opposite directions from a neutral position and secured to the wrist of the hand.
References Cited (Backward Citations)
No citation records indexed.
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