US3561675A - Recording system for business machines - Google Patents
Recording system for business machines Download PDFInfo
- Publication number
- US3561675A US3561675A US844028A US3561675DA US3561675A US 3561675 A US3561675 A US 3561675A US 844028 A US844028 A US 844028A US 3561675D A US3561675D A US 3561675DA US 3561675 A US3561675 A US 3561675A
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- Prior art keywords
- signal
- character
- recording system
- signals
- machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J7/00—Type-selecting or type-actuating mechanisms
- B41J7/48—Type carrier arrested in selected position by electromagnetic means
Definitions
- the recording system comprises first and second signal-generating means which are adapted to produce respective sequential first and second signals as each character passes a preselected point during a rotation of a character wheel Signal means is provided which is responsive to the sequential occurrence of said first and second signals for producing an output signal which is indicative of the character entered into the machine.
- the present invention relates generally to recording systems and, more particularly, pertains to a recording system which is adapted to be used in conjunction with a key-stroke operated business machine for recording, on an appropriate medium, the characters entered into the machine.
- Direct data communication between machines such as computers and the like is becoming more widespread as methods and facilities for accomplishing substantially error-free transmission of data are expanded.
- telephone companies presently provide facilities for the transmission of data between machines over existing telephone lines.
- This service has been found to be particularly useful to those companies having, for example, a central office and a number of subsidiary or branch offices separated by relatively large distances.
- a computer may be located at a main or central office which receives data, such as accounting data or the like, from the branch or subsidiary offices.
- a system of this type results in a tremendous economic savings with regard to cost of equipment since only one centrally located computer is required rather than a plurality of computers, each one of which is located at a different branch office.
- the complete bookkeeping records of all the branch offices of the multidivision organization may be fed directly into a central computer so that the complete accounting picture of the business may be maintained up to date.
- Errors of the type referred to hereinabove may arise in any one of a number of different manners, primary amongst which is by an incomplete key-stroke on the part of the operator. to be more specific, an incomplete key-stroke may commit the recording system to record the character; however, the stroke may be insufficient to commit the business machine to mechanical mechanically enter the character. Hence, an intolerable discrepancy will exist between the machine entry and the recorded entry.
- the primary problem associated with presently available machines of the type under consideration is to maintain a negligible differential between the electrical takeoff commitment point wherein the recording system is actuated to record the character and the mechanical commitment point wherein the business machine receives the character. While in practice a zero differential can conceivably be approximated by the use of complex and expensive mechanical linkages, such zero differential is difficult to maintain over a period of time.
- an object of the present invention is to provide a recording system for business machines for recording the characters entered into the machine in data form which sub stantially eliminates any discrepancies between the machine entries and the recorded entries.
- a more specific object of the present invention resides in the novel details of circuitry which provides a recording system of the type described which records a character independently of the manner in which operator depresses the key on the business machine.
- Another object of the invention is to provide a recording system of the type described which is compatible for use in conjunction with existing machines, so that a machine easily may be adapted to record entries in data form for application to computers and the like.
- a further object of the invention is to provide a recording system for business machines which is economic to produce and reliable in operation.
- a recording system for business machines constructed according to the present invention is adapted to be utilized with a machine of the type having a plurality of character wheels, each having a set of circumfercntially spaced characters thereon and each being rotatable to a respective preselected angular position to indicate that a desired character has been entered into the machine.
- the recording system comprises first signal-generating means for producing a first signal in response to the movement of each character on one of the character wheels past a first predetermined point.
- Second signal-generating means is provided for producing a second signal in response to the movement of each character on said one of said character wheels past a second predetermined point.
- signal means which is responsive to the occurrence of said first and second signals is adapted to produce an output signal which is indicative of the character entered into the machine.
- FIG. I is a block diagram of the mechanical arrangement of an illustrative business machine adapted to be used in conjunction with the recording system of the present invention
- FIG. 2 is a side elevational view of portions of a business machine incorporating the present invention
- FIG. 3 is a sectional view thereof taken along the line 3--3 of FIG. 2;
- FIG. 4 is a detailed sectional view, to an enlarged scale, illustrating the optical takeoff arrangement of a recording system constructed according to the present invention
- FIG. 5 is a top plan view as seen looking along the line 5-5 of FIG. 2, to an enlarged scale;
- FIG. 6 is a logic circuit diagram of a recording system constructed in accordance with the present invention.
- the recording system of the present invention is adapted for use in conjunction with any type of conventional key-stroke operated business machine of the type having rotatable character wheels for recording sequentially the characters entered into the machine.
- the system of the present invention will be described in conjunction with the operation of an adding machine and, in particular, the Friden, Electric Adding Machine Model No. AFIO, which is manufactured by Friden, Inc. of San Leandro, Calif.
- Friden, Inc. of San Leandro, Calif.
- the construction of this machine is representative of the construction of many key-stroke operated business machines presently commercially available. Only those portions of the machine which are pertinent to a clear understanding of the recording system of the present invention will be disclosed. However, further information on this machine may be obtained from publications of Friden, Inc., such as their service manual and their catalogue of spare parts.
- the adding machine referred to herein is for illustrative purposes only and is not to be interpreted as being a limitation of the present invention. That is, the recording system of the present invention may be utilized with any type of key-stroke operated business machine having rotatable character wheels.
- the adding machine of the illustrative example includes a plurality of character wheels 10 which are rotatably supported on a shaft 12.
- the character wheels 10 are identical in construction and each are provided with circumferentially spaced characters 14 which are adapted to be displayed, in the manner described below, to designate the characters entered into the machine.
- 10 such characters are provided over a portion of the circumference of each wheel respectively displaying the digits -9.
- the machine further includes a face plate 16 having a recessed window 18 through which the characters are visible.
- the machine further includes a keyboard 20 which includes respective keys representing each one of the digits O9.
- a keyboard 20 which includes respective keys representing each one of the digits O9.
- the appropriate key is depressed.
- the depression of the key operates an appropriate linkage mechanism 22 which actuates a pinbox 24.
- the pinbox 24 includes an arcuate member 26 (FIG. 2) which is spaced below the plurality of character wheels and includes a row of outwardly movable pins 28 which are in one-to-one correspondence with the characters 14 on each wheel. It is to be understood that a different row of pins 28 is provided for each one of the character wheels and the pins associated with any one of the character wheels are in alignment with that particular character wheel.
- the pin 28 associated with that key is moved outwardly.
- the fourth pin 28 is moved outwardly in response to the depression of the character key representing the digit 4.
- a release mechanism 29 is operated to release the character wheel 10 associated with the o erated pin.
- Each one of the character wheels I0 is provided with an outwardly extending arm 30 and a biasing spring 32 which causes the character wheel to rotate in the direction indicated by the arrowhead 34 when-the release mechanism releases the character wheel. Accordingly, upon release of the character wheel, the character wheel will rotate until the arm 30 engages the operated pin 28 or, in the particular example under consideration, the character wheel will rotate until the arm 30 engages the fourth pin 28. At this point, the digit 4 will be uppermost.
- the character wheels are moved laterally by the release mechanism 29 so that the operated character wheel has been moved to display the desired character.
- the character wheel which is to display that particular digit is located just to the right of the window 18.
- the character wheel 10A the character wheel which is to be entered into the machine will be displayed by the character wheel 10A.
- the character wheels are then moved laterally by the release mechanism 29 so that the uppermost character on the wheel 10A is visible through the window 18.
- the wheel 108 will then be moved to the position formerly occupied by the wheel 10A and the next in the same manner as indicated above.
- this row of characters will be displayed by the appropriate character wheels 10 through the window 18.
- the linkage mechanism 22 is operable to cause the digits or characters entered into the machine to be stored in an appropriate storage device (not shown) in the machine and the character wheels are rotated back to their normal position and are also moved laterally so that the first character wheel is now positioned just to the right of the window 18 (Le, the first character wheel now occupies the position formerly occupied by wheel 10A of FIG. 3).
- the depression of a character key on the keyboard causes the character wheel located to the right of the window 18 to rotate through an angle such that the character corresponding to the depressed character key is uppermost. Thereafter, the character wheels are stepped or moved laterally to the left so that the rotated character wheel is now visible through the window 18 to display the character which has just been entered into the machine.
- the recording system of the present invention includes a housing 36 (FIG. 4) which is connected to the underside of the face plate 16 adjacent the window 18.
- the housing 36 overlies the character wheel which is to display the next character to be entered into the machine. In other words, for the arrangement of FIG. 3, the housing 36 will overlie the wheel 10A.
- Received within the housing 36 is a tapering passage 38 which tapers upwardly and toward the left as taken in FIG. 4 and two laterally aligned tapering passages 40 (only one of which is shown in FIG. 4) which taper upwardly and towards the right.
- Received within the passage 38 is a source of light or lamp 42.
- Received within the aligned passages 40 are respective photo-optical sensors A' and B (FIG. 5).
- the sensors A and B are adapted to produce an electrical signal in response to light striking the sensors. (Such devices may comprise a photodiode which is offered for sale by Texas Instruments under the Model No. LS400).
- each character wheel 10 Associated with each one of the characters 14 on each character wheel 10 is a reflective stripe or the like 44 which is connected transversely across the face of the wheel beneath each one of the characters 14, as shown in FIG. 4. Additionally, a reflective stripe 46 is connected to each of the character wheels 10 adjacent the right-hand side thereof about the periphery of the wheel. Additionally. as shown in FIG. 5, the photosensor B is placed one-half of a pitch away from the photosensor A for purposes which will become apparent from a consideration of the operation of the present invention as described hereinbelow.
- the digit 4 is to be displayed by the character wheel 10A of FIG. 3. Accordingly, as the character wheel rotates to the digit 4, the reflective strips 44 associated with the digits 1, 2, 3 and 4 will rotate beneath the photosensors A and B. Accordingly, four sequential sets of signals A and B will be produced by the photo sensors. Additionally, as the character wheels 10 shift laterally so that the character uppermost on wheel 10A is observed through the window 18, the light from the lamp 38 (which is connected to an appropriate energizing source, not shown) will strike the reflective strip 46 connected to the periphery of the wheel 10A and will be simultaneously reflected to both photosensors A and B. As a result, when the character wheels to shift laterally both photosensors A and B will produce electrical signals simultaneously.
- the logic circuit diagram of the recording system of the present invention is who present invention is shown in FIG. 6.
- the output signal from photosensor A is applied to the input terminal of an inverting amplifier IVl via a lead 48.
- the noninverting output terminal of the amplifier IV] is connected to one input terminal of an AND gate Al.
- the inverting terminal of the amplifier IVI is connected to one input terminal of an AND gate A2.
- the output from the photosensor B is connected to the input terminal of an inverting or paraphase amplifier IV2 via a lead 50.
- the noninverting output terminal of the amplifier W2 is connected to another input terminal of the gate A2.
- the inverting output terminal of the amplifier W2 is connected to an input terminal of the AND gate Al.
- Another input terminal of both the AND gates A1 and A2 are adapted to receive a pulse G.
- the output terminal of the AND gate A1 is connected via a lead 52 to the set-to-one input S of bistable device or flip-flop FFl.
- Flip-flop FF! is a conventional Eccles Jordan flip-flop which also includes a set-to-zero input R, is a 1 output and a 0 output.
- the set-to-zero input R is connected to the output terminal of AND gate A2 via the lead 54.
- the flip-flop FFl is set to the 1 state on the trailing edge of a positive going signal at the input S, and is set to the 0 state on the trailing edge of a positive going signal at the R input.
- the flip-flop FFl When the flip-flop FFl is set to the 1 state, it produces an output signal F which is applied to the input terminal of a conventional counter CC. When the flip-flop FFl is set to the 0 state the flip-flop produces an output signal F and the signal F disappears.
- the eight output terminals of the counter CC are connected to one input terminal of respective AND gates A t-All.
- the output terminals of AND gates A4-All are connected to the respective input terminals of a recorder REC.
- the recorder REC may be a magnetic tape recorder, a paper tape recorder or the like.
- the output signals from photosensors A and B are also ap plied to both input terminals of an AND gate A3 via the leads 56 and 58.
- the output terminal of the AND gate A3 is connected to a conventional differentiating network 60.
- the output terminal of the differentiating network 60 is connected to the force set terminal FS of a so-called .lK flip-flop FF2 via a lead 62.
- the output of the differentiating network 60 is also connected to the clear terminal of the counter CC through a delay network D and to another input terminal of the respective AND gates A4-Al l.
- the J terminal of flip-flop FFZ is connected to ground.
- the K terminal of the flip-flop FF2 is adapted to receive the -F signal and the clock or C terminal of the flip-flop FF2 is connected to receive the B signal from photosensor B.
- the operation of the JK flip-flop FFZ is conventional and is adapted to produce the pulse G at the 1 output terminal in response to a pulse appearing at the force set terminal FS.
- the trailing edge of the 8 signal resets the flip-flop FF2 so the that the G pulse is no longer present at the 1 output terminal.
- the F signal will be produced at the 1 output of the flip-flop FFl.
- the photosensor B will similarly produce a pulse which will be applied to the inverting amplifier 1V2. Since the photosensor A will not be producing a pulse at this time, no input signal will appear on the lead 48 and, accordingly, the inverting output terminal of the amplifier [V1 will be energized so that the pulse passing through the amplifier 1V2 will pass through the AND gate A2 to the set-tozero terminal R of the flip-flop FFl. Accordingly, the flip-flop PM will be reset so that the signal F will no longer be present and the signal -F will appear at the 0 output.
- This procedure will be repeated four times corresponding to the passage of the four reflective strips past the photosensors A and B in response to the digit 4 being entered into the machine. Accordingly four F signals will be produced and applied to the input of the counter CC. Thus, the counter will register a count of four in binary notation in the conventional manner to designate that the character 4 has been entered into the machine.
- both signals from photosensors A and B will be present simultaneously on the respective leads 43 and 50.
- the inverting terminal of the amplifier [V1 will disable the AND gate A2 and prevent the passage of any signals thcrethrough.
- the terminal of the AND gate Al connected to the inverting terminal of the amplifier [V2 will similarly be dccncrgizcd to prevent the passage of any signals through the AND gate Al.
- no signals will pass through the AND gates Al and A2 when both signals from photo sensors A and B are present simultaneously.
- the flip-flop FFI is caused to produce the F signal. lf a rebounding of the character wheel then occurs so that the reflective strip passes below the sensor B again, the trailing edge of this signal will cause the flip-flop to FF2 to be reset so that the G signal will disappear.
- the AND gates Al and A2 will be disabled so that no pulses can pass through to the flip-flop FFl.
- a pulse will be produced at the output of the differentiating network 60 when the pulses A and B are present simultaneously on the leads 56 and 58 in response to the lateral movement of the character wheel after the character has rotated to the correct position.
- This pulse or signal is applied to the force set terminal FS of the flip-flop FF2.
- the flip-flop FFZ has been reset due to the rebounding of the character wheel, the flip-flop will be set to produce the signal G when the character wheels are moved laterally, thereby again enabling the AND gates Al and A2 to pass the appropriate pulses in response to signals from the photosensors A and B.
- a recording system for a business machine of the type having a plurality of character wheels each having a set of circumferentially spaced characters thereon and each being rotatable to a respective pr e'selected angular position to indicate a desired character has been entered into the machine; said recording system comprising first signal-generating means for producing a first signal in response to the movement of each character on one of said character wheels past a first predetermined point, second signal-generating means for producing second signal in response to the movement of each character on said one of said character wheels past a second predetermined point, and signal means responsive to the occurrence of said first and second signals for producing an output signal indicative of the character entered into said machine.
- said signal means includes counting means for counting the number of sequential occurrences of said first and second signals during the rotation of said one character wheel to said preselected position and producing a count signal in accordance with said number of sequential occurrences.
- a recording system as in claim I and disabling means responsive to the sequential occurence of said second signal for disabling said signal means.
- said first and second signal-generating means comprise respective sensors responsive to light for producing said respective first and second signals, a light source, and respective reflecting means associated with each character comprising a set of characters on each of said plurality of character wheels positioned to reflect light from said light source to said first and second sensors as each one of said reflecting means passes said respective first and second predetermined points.
- a recording system for a business machine of the type having a plurality of character wheels each having a set of circumferentially spaced characters thereon, support means for rotatably supporting said plurality of character wheels, key means for entering characters into said machine whereby said plurality of character wheels rotate to preselected positions to display the characters entered into the machine;
- said record ing system comprising a signal-producingmeans associated with each character comprising each set of characters, first signal-generating means for generating respective first signals in response to the movement of each signal-producing means thereby.
- second signal-generating means spaced from said first signal-generating means for generating respective second signals response to the movement of each signal-producing means thereby, and output means responsive to said first and second signals for producing respective output signals representing each character entered into the machine.
- said output means includes a bistable device operable between a first state 111 response to said first signal and a second state in response to said second signal, and counting means responsive to transitions of said bistable device from said first to said second state for producing a signal representing the number of said transitions.
- said output means further includes respective gate means between said first and second signal generators and said bistable device.
- disabling means responsive to the sequential occurrence of said first and second signals for disabling said gate means to prevent transmission of said first and second second signals to said bistable device.
- a recording system as in claim 10 which said plurality of character wheels are adapted tobe moved laterally after a t character has been entered into said machine, actuating means on each of said'plurality of character wheels for actuating said first and second signal-generating means to produce said first and second signals simultaneously when said character wheels are moved laterally, a recording device, and
- transfer means responsive to the simultaneous occurrence of I said first and second signals for transferring said counting means signal to said recording device;
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Abstract
Description
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US84402869A | 1969-07-23 | 1969-07-23 |
Publications (1)
Publication Number | Publication Date |
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US3561675A true US3561675A (en) | 1971-02-09 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US844028A Expired - Lifetime US3561675A (en) | 1969-07-23 | 1969-07-23 | Recording system for business machines |
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US (1) | US3561675A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3980869A (en) * | 1974-11-25 | 1976-09-14 | Litton Business Systems, Inc. | Rotatable keyboard |
EP0019839A1 (en) * | 1979-05-28 | 1980-12-10 | SMH-ALCATEL Société anonyme dite: | Printer with parallel type wheels |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3045903A (en) * | 1958-07-08 | 1962-07-24 | Electro Mechanical Res Inc | Magnetic dial reading apparatus |
US3059845A (en) * | 1957-07-10 | 1962-10-23 | Olympia Werke Ag | Apparatus for transmission and reception of impulses representing numerical values and computing operations |
US3107849A (en) * | 1957-11-25 | 1963-10-22 | Victor Adding Machine Co | Sales registering and recording device |
US3118721A (en) * | 1960-03-21 | 1964-01-21 | Paul G Exline | Apparatus for accumulating and recording digital information |
-
1969
- 1969-07-23 US US844028A patent/US3561675A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3059845A (en) * | 1957-07-10 | 1962-10-23 | Olympia Werke Ag | Apparatus for transmission and reception of impulses representing numerical values and computing operations |
US3107849A (en) * | 1957-11-25 | 1963-10-22 | Victor Adding Machine Co | Sales registering and recording device |
US3045903A (en) * | 1958-07-08 | 1962-07-24 | Electro Mechanical Res Inc | Magnetic dial reading apparatus |
US3118721A (en) * | 1960-03-21 | 1964-01-21 | Paul G Exline | Apparatus for accumulating and recording digital information |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3980869A (en) * | 1974-11-25 | 1976-09-14 | Litton Business Systems, Inc. | Rotatable keyboard |
EP0019839A1 (en) * | 1979-05-28 | 1980-12-10 | SMH-ALCATEL Société anonyme dite: | Printer with parallel type wheels |
FR2457769A1 (en) * | 1979-05-28 | 1980-12-26 | Havas Machines | IMPROVEMENTS ON PARALLEL WHEEL PRINTERS |
US4350092A (en) * | 1979-05-28 | 1982-09-21 | Smh-Adrex | Parallel-wheel printers |
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Legal Events
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AS | Assignment |
Owner name: NORTHERN TELECOM INC., STATELESS Free format text: CERTIFIED COPY OF MERGER FILED IN THE OFFICE OF THE SECRETARY OF STATE OF DELAWARE, SHOWING MERGER OF ASSIGNORS AND CHANGE OF NAME OF THE SURVIVING CORPORATION ON DEC. 17, 1980, EFFECTIVE DEC. 31, 1980;ASSIGNOR:NORTHERN TELECOM SYSTEMS CORPORATIO A CORP. OF MN. (MERGED INTO);REEL/FRAME:004006/0661 Effective date: 19800918 Owner name: DATA 100 CORPORATION, STATELESS Free format text: CERTIFIED COPY OF A CERTIFICATE FILED IN THE OFFICE OF THE SECRETARY OF STATE OF MINNESOTA, SHOWING MERGER OF ASSIGNORS AND CHANGE OF NAME OF THE SURVIVING CORPORATION ON MAY 30, 1979 EFFECTIVE AY 31, 179,;ASSIGNOR:NORTHERN TELECOM COMPUTERS, INC., A CORP. OF DE.;REEL/FRAME:004006/0654 Effective date: 19871212 Owner name: NORTHERN TELECOM INC. (CHANGED INTO) Free format text: CERTIFIED COPY OF MERGER FILED IN THE OFFICE OF THE SECRETARY OF STATE OF DELAWARE, SHOWING MERGER OF ASSIGNORS AND CHANGE OF NAME OF THE SURVIVING CORPORATION ON DEC. 17, 1980, EFFECTIVE DEC. 31, 1980;ASSIGNOR:NORTHERN TELECOM SYSTEMS CORPORATIO A CORP. OF MN. (MERGED INTO);REEL/FRAME:004006/0661 Effective date: 19800918 Owner name: DATA 100 CORPORATION, A MN. CORP. (CHANGED INTO) Free format text: CERTIFIED COPY OF A CERTIFICATE FILED IN THE OFFICE OF THE SECRETARY OF STATE OF MINNESOTA, SHOWING MERGER OF ASSIGNORS AND CHANGE OF NAME OF THE SURVIVING CORPORATION ON MAY 30, 1979 EFFECTIVE AY 31, 179,;ASSIGNORS:NORTHERN TELECOM COMPUTERS, INC., A CORP. OF DE.;SYCOR, INC. A CORP. OF DE. (MERGED INTO);REEL/FRAME:004006/0654;SIGNING DATES FROM |
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AS | Assignment |
Owner name: DATA 100 CORPORATION, A MN CORP., STATELESS Free format text: ASSIGNS NUNC PRO TUNC AS OF DECEMBER 31, 1977 THE ENTIRE INTEREST IN SAID PATENTS;ASSIGNOR:IOMEC, INC., A CORP. OF DE;REEL/FRAME:004064/0072 Effective date: 19820902 Owner name: DATA 100 CORPORATION, A MN CORP. Free format text: ASSIGNS NUNC PRO TUNC AS OF DECEMBER 31, 1977 THE ENTIRE INTEREST IN SAID PATENTS.;ASSIGNOR:IOMEC, INC., A CORP. OF DE;REEL/FRAME:004064/0072 Effective date: 19820902 |