| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | JPS497520B1 - | JP10398570 | 1970-11-25 | JPS497520B1 | 1974-02-20 | |
| 2 | JPS5048998A - | JP3957074 | 1974-04-09 | JPS5048998A | 1975-05-01 | |
| 3 | JPS4959698A - | JP7646773 | 1973-07-06 | JPS4959698A | 1974-06-10 | |
| 4 | JPS48101990A - | JP2423773 | 1973-02-28 | JPS48101990A | 1973-12-21 | |
| 5 | Method and apparatus for determining the exponential powers of "i" | US217448 | 1994-03-24 | US5569896A | 1996-10-29 | Ruben V. Marcelo |
| The present invention provides methods and apparatus for readily determining the value of the imaginary number "i" raised to different exponential powers. Calculations pertaining to the imaginary "i" are commonly encountered in engineering, mathematical and scientific calculations and analysis. In accordance with the present invention, the value of "i" raised to any magnitude of exponential power is readily determined based upon the values of the "ones" and "tens" place of the exponent, including whether the "tens" value is an even or odd integer. Different apparatus are provided for readily calculating the value of the imaginary number "i" for any natural number of exponential power. | ||||||
| 6 | Slide calculator and method | US701082 | 1976-06-30 | US4132348A | 1979-01-02 | Howard M. Bromberg |
| A construction comprising a sheet of two contiguous detachable leaf members is folded and separated to form slide and sleeve components of the calculator. Fold lines in the sheet are formed parallel to a separation or tear line that divides one leaf member from the other leaf member. In assembling the slide calculator the leaf members can be separated before or after the folding operation. A marginal portion provided on one of the leaf members enables the sheet to be secured by adhesive or other suitable form of attachment to a newspaper or magazine, a package container, or a package label.In various embodiments of the invention an information readout is provided on reverse sides of the calculator including one embodiment wherein the printed format of the slide and sleeve components is applied to one surface only of the respective leaf members. The slide calculator construction can be produced from a web that is successively divided into sheet members of predetermined size comprising the pair of contiguous leaf members, with simultaneous formation of the fold lines and the separation line in the direction of movement of the web. | ||||||
| 7 | Calculator for determining specification of cranes | US3784797D | 1972-10-30 | US3784797A | 1974-01-08 | KROLL J |
| A calculator for determining specifications of various models or types of cranes comprises a first plate or disc having four separate graphs or charts radially arranged on each side. Each graph plots the operating radius, elevation, angle and capacity for a known type or model of a specific crane. Second and third plates or discs are rotatably mounted on opposite sides of the first plate by mounting means such as a cylindrical pin or grommet and each of the second and third discs comprises a window or hole through which one selected graph is visible. Movable indicator means calibrated for various boom lengths are provided for use with the selected graph to provide information relative to a particular crane having a boom of particular length. The indicator means are pivotably and linearly movable with respect to the selected graph. The indicator means comprise a first elongated flat transparent member with appropriate indicators thereon and disposed between the first and second discs and having a slot therein for accommodating the aforesaid grommet which movably secures the indicator means relative to the first disc. The indicator means further comprises a second member, similar to the first member, which is disposed between the first and third discs. The ends of the two members of the indicator means project beyond the edges of the discs and are joined together.
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| 8 | Graph implement | US3764064D | 1972-11-15 | US3764064A | 1973-10-09 | GAIDOS A |
| In a graph implement, a multi-sided tubular body having an enlarged multi-sided tapered head terminating in a frustrum of a cone on the longitudinal centers thereof; a removable transparent casing or sleeve surrounding said body and spaced from the sides of the multi-sided tubular body to hold inserts bearing useful reference tables in the space between the tubular body and the transparent casing; a removable, multi-sided cap detachably held on the end of said tubular body to hold said transparent casing and said inserts in position; an aperture through the longitudinal center of the cap registering with the cavity of said tubular body for insertion and releasable retention of a ballpoint pen or pencil writing implement so that the writing end of said implement emerges through the tip of the enlarged tapered head; the multi-sided tapered head, the multi-sided transparent casing, and the multi-sided securing cap having the same sides in registry so that the corners thereof may be utilized as rulers for drawing when the graph implement is removed for that purpose.
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| 9 | Hexadecimal slide rule | US3716186D | 1971-11-17 | US3716186A | 1973-02-13 | COMFORT K |
| DISCLOSED HEREIN IS A METHOD FOR THE RAPID ADDITION AND/OR SUBSTRACTION COMPUTATION OF HIGHER ORDER MATHEMATICS. THE METHOD IS PARTICULARLY APPLICABLE FOR ALPHAMERIC MANIPULATIONS. FOR EXAMPLE, FOR THE OPERATION OF HEXADECIMAL SUBTRACTION AND ADDITION.
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| 10 | Slide rules incorporating magnetic elements | US3643070D | 1970-04-07 | US3643070A | 1972-02-15 | DOGIGLI JOHANN |
| Slide rules constructed predominantly of nonmagnetic materials such as synthetic resins or light alloys, preferably having sliding surfaces of or faced with a synthetic resin or other material of low frictional coefficient, and provided with inserts of magnetizable material in both the slide and body near their contacting faces, at least one of the inserts being magnetized.
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| 11 | Pivots for rotary surfaces | US3604134D | 1969-01-30 | US3604134A | 1971-09-14 | CLARK CHARLES F |
| Two or three sheets of strong paper, cardboard or any other suitable material are joined so that they can rotate relatively to each other by impressing upon an inner sheet a centrally located circular area and firmly connecting it to a similar area located upon another sheet. Then the circular area of the inner sheet can be separated to form a disc and the inner sheet can be rotated around that disc. The central area or areas of the outer sheet or sheets can be embossed to form projecting areas firmly connected with the rotary disc of the central sheet.
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| 12 | Aeronautical computer | US3568923D | 1969-03-28 | US3568923A | 1971-03-09 | CHAPMAN LOYAL H |
| An aeronautical computer which combines a writing instrument with measuring scales used for measuring distances on aeronautical maps and log scales used for making various speed and fuel calculations.
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| 13 | Circular slide rule | US3526357D | 1968-07-16 | US3526357A | 1970-09-01 | LEFEBVRE JOSEPH BERNARD ROSAIR |
| 14 | Slide rule pen | US60784767 | 1967-01-06 | US3378195A | 1968-04-16 | SCHUH CHARLES H |
| 15 | Writing implement with slide rule | US35531964 | 1964-03-27 | US3261548A | 1966-07-19 | UDO RIEHLE |
| 16 | Circular slide rule | US6490660 | 1960-10-25 | US3120923A | 1964-02-11 | KENNEDY THOMAS W |
| 17 | Analog computer | US84094259 | 1959-09-18 | US3104469A | 1963-09-24 | BURNS KAY N; ALEXANDER WARREN A |
| 18 | Slide rule of the circular type | US14490861 | 1961-10-13 | US3071321A | 1963-01-01 | EZOPOV IGOR V |
| 19 | Calculator | US3531360 | 1960-06-10 | US3047221A | 1962-07-31 | RAYMOND ALFAYA; LANDSKROENER PETER A; THAXTON KARL L |
| 20 | One-hand operated slide rules | US69216757 | 1957-10-24 | US3023955A | 1962-03-06 | BAILEY FRANK W |
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