US3561675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording system for business machines
Assignee: Digitronics Corp
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Filing: 1969-07-23
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Granted: 1971-02-09
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Expires: 1989-07-23
Abstract
Abstract 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 being rotatable to a preselected position to display the character entered into the machine. 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.
Inventors
- 👤 Edgar Wolf
- 👤 Francis C Marino
- 👤 Edward Henry Lau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:23
CPC Classifications
B; B41; B41J; B41J7/00; B41J7/48
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
130 words
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 preselected 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.
Claim 2
Dependent Claim
130 words
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 preselected 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.
Claim 3
Dependent Claim
53 words
A recording system as in claim 1, in which 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.
Claim 4
Dependent Claim
76 words
A recording system as in claim 2, wherein the character wheels are adapted to move laterally, and in which said first and second signal-generating means are operable to produce said first and second signals simultaneously when said one wheel is moved laterally, said signal means including recording means for recording said count signal, and transfer means responsive to the simultaneous occurrence of said first and second signals for transferring said count signal to said recording means.
Claim 5
Dependent Claim
33 words
A recording system as in claim 1, in which said second signal-generating means is spacially displaced from said first and second signal-generating means in the direction of rotation of said one character wheel.
Claim 6
Dependent Claim
24 words
A recording system as in claim 1, and disabling means responsive to the sequential occurence of said second signal for disabling said signal means.
Claim 7
Dependent Claim
30 words
A recording system as in claim 5, in which said disabling means is responsive to the simultaneous occurrence of said first and second signals for rendering said signal means operable.
Claim 8
Dependent Claim
82 words
A recording system as in claim 1, in which 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.
Claim 9
Dependent Claim
62 words
A recording system as in claim 7, in which said plurality of character wheels are adapted to move laterally, and a respective light reflecting means positioned along the periphery of each of said plurality of character wheels, whereby said light reflecting means reflect light from said light source to said first and second sensors simultaneously as said character wheels are moved laterally.
Claim 10
Dependent Claim
140 words
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 recording system comprising a signal-producing means 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.
Claim 11
Dependent Claim
140 words
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 recording system comprising a signal-producing means 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.
Claim 12
Dependent Claim
64 words
A recording system as in claim 9, in which said output means includes a bistable device operable between a first state in 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.
Claim 13
Dependent Claim
61 words
A recording system as in claim 10, in which said output means further includes respective gate means between said first and second signal generators and said bistable device, and 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.
Claim 14
Dependent Claim
88 words
A recording system as in claim 10, which said plurality of character wheels are adapted to be moved laterally after a 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 said first and second signals for transferring said counting means signal to said recording device.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |