Patent US4680455A successfully refreshed from Google Patents.
US4680455A
Expired / Lapsed
US
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Method of manipulating a calculation and device used therewith
Assignee: Aurora Mechatronics Corp
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Filing: 1986-03-31
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Granted: 1987-07-14
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Expires: 2006-03-31
Abstract
Abstract A method of manipulating a calculator comprises steps of selecting a desired instruction card, associating/attaching the instruction card to the calculator, and manipulating the special function keys according to the instructions. A set of auxiliary cards, having manipulation instructions, formula/equations, and manipulation principles printed thereon, can be attached to the calculator for achieving the method of manipulation.
Inventors
- 👤 Calven Kuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:21
CPC Classifications
G; G06; G06F; G06F15/00; G06F15/02; G06F15/0225
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
91 words
A method of manipulating a calculator having a first face portion provided with numeral keys (11) and ordinary function keys (12) and a second face portion provided with special function keys (13), comprising the ordered steps of: selecting a desired auxiliary card from a set of such cards, said selected card having selected special function key manipulation instructions provided thereon; operatively superimposing said selected auxiliary card with the special function keys of the calculator; and manipulating the selected special function keys in accordance with the instructions on the selected auxiliary card.
Claim 2
Independent Claim
91 words
A method of manipulating a calculator having a first face portion provided with numeral keys (11) and ordinary function keys (12) and a second face portion provided with special function keys (13), comprising the ordered steps of: selecting a desired auxiliary card from a set of such cards, said selected card having selected special function key manipulation instructions provided thereon; operatively superimposing said selected auxiliary card with the special function keys of the calculator; and manipulating the selected special function keys in accordance with the instructions on the selected auxiliary card.
Claim 3
Dependent Claim
26 words
A method of manipulating a calculator according to claim 1 wherein said selected auxiliary card is directly placed over the special function keys of the calculator.
Claim 4
Dependent Claim
20 words
A method of manipulating a calculator according to claim 1 wherein said selected auxiliary card is inserted into the calculator.
Claim 5
Dependent Claim
25 words
A method of manipulating a calculator according to claim 1 wherein said selected auxiliary card is underlayed beneath the special function keys of the calculator.
Claim 6
Dependent Claim
63 words
A combination calculator and manipulation device, comprising: a calculator body including numeral keys (11), ordinary function keys (12) and special function keys (13) provided thereon; a set of auxiliary cards (17), each having different selected special function key manipulation instructions provided thereon; and means for operatively superimposing a selected one of said auxiliary cards with said special function keys on said calculator body.
Claim 7
Dependent Claim
63 words
A combination calculator and manipulation device, comprising: a calculator body including numeral keys (11), ordinary function keys (12) and special function keys (13) provided thereon; a set of auxiliary cards (17), each having different selected special function key manipulation instructions provided thereon; and means for operatively superimposing a selected one of said auxiliary cards with said special function keys on said calculator body.
Claim 8
Dependent Claim
20 words
A combination calculator and manipulation device according to claim 5 wherein said auxiliary cards are made of firm sheet material.
Claim 9
Dependent Claim
29 words
A combination calculator and manipulation device according to claim 6 wherein said auxiliary cards include punched openings formed therein corresponding to positions of special function keys to be pushed.
Claim 10
Dependent Claim
28 words
A combination calculator and manipulation device according to claim 5 wherein said special function keys are membrane keys and said auxiliary cards are made of flexible sheet material.
Claim 11
Dependent Claim
44 words
A combination calculator and manipulation device according to claim 5 wherein said superimposing means comprises a frame (19) surrounding said special function keys having slots (20) formed in edges of the frame and an opening (21) for the insertion of a selected auxiliary card.
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) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |