US3847262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and attachment for deriving coded signals
Assignee: Datacq Systems Corp
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Filing: 1969-03-14
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Granted: 1974-11-12
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Expires: 1989-03-14
Abstract
Abstract A keyboard-actuated apparatus is described for deriving coded electrical output signals characteristic of the individual characters and markings represented by the several keys of a keyboard-actuated apparatus such as a conventional typewriter. The typewriter is of the kind having a plurality of key-actuated printing hammers that are selectively physically moved to a common printing position during operation, and a single sensing device is located adjacent the common printing position for reading-out respective characteristic marking targets secured to or formed on the printing hammers as the hammers are selectively moved past the sensing device to the common printing position. The sensing device then derives output coded electric signals which are characteristic of the individual characters and markings represented by the keys of the typewriter. By this arrangement, simultaneous printing and encoding of electric output signals, can be achieved. The characteristic marking targets on the respective key-actuated printing hammers preferably include at least two sets of markers representative of upper case and lower case alphabetic letters which are selectively interposed into coacting relationship with the sensing device by the capitalization control of the typewriter. The sensing device may comprise an electro-optic fibre transmitting bundle.
Inventors
- 👤 L Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:12
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; H03K17/965; H03K17/97; H03K17/972; B; B41; B41J; B41J3/00; B41J3/44; B41J3/50; B41J3/51; H03K17/968; H03K17/969
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
161 words
A keyboard-actuated apparatus for deriving coded electrical output signals characteristic of the individual characters and markings represented by the several keys of the apparatus and including a plurality of key-actuated members having portions that are physically moved past a common read-out zone for all of the members upon the respective keys thereof being actuated, characteristic marking means formed on the respective keyactuated members on the portions thereof that move to the common read-out zone, and electro-optic sensing means located at the common read-out zone for sensing the respective characteristic markings as they move to the common read-out zone and deriving coded electrical output signals therefrom which are characteristic of the individual characters and markings represented by the keys of the apparatus, said electro-optic sensing means having a single light path optically coupling all of the characteristic markings of the respective key-actuated members to the electro-optic sensing means in a serial manner as they are physically moved past the common read-out zone.
Claim 2
Dependent Claim
161 words
A keyboard-actuated apparatus for deriving coded electrical output signals characteristic of the individual characters and markings represented by the several keys of the apparatus and including a plurality of key-actuated members having portions that are physically moved past a common read-out zone for all of the members upon the respective keys thereof being actuated, characteristic marking means formed on the respective keyactuated members on the portions thereof that move to the common read-out zone, and electro-optic sensing means located at the common read-out zone for sensing the respective characteristic markings as they move to the common read-out zone and deriving coded electrical output signals therefrom which are characteristic of the individual characters and markings represented by the keys of the apparatus, said electro-optic sensing means having a single light path optically coupling all of the characteristic markings of the respective key-actuated members to the electro-optic sensing means in a serial manner as they are physically moved past the common read-out zone.
Claim 3
Dependent Claim
161 words
A keyboard-actuated apparatus for deriving coded electrical output signals characteristic of the individual characters and markings represented by the several keys of the apparatus and including a plurality of key-actuated members having portions that are physically moved past a common read-out zone for all of the members upon the respective keys thereof being actuated, characteristic marking means formed on the respective key-actuated members on the portions thereof that move to the common read-out zone, and electro-optic sensing means located at the common read-out zone for sensing the respective characteristic markings as they move to the common read-out zone and deriving coded electrical output signals therefrom which are characteristic of the individual characters and markings represented by the keys of the apparatus, said electro-optic sensing means having a single light path optically coupling all of the characteristic markings of the respective key-actuated members to the electro-optic sensing means in a serial manner as they are physically moved past the common read-out zone.
Claim 4
Dependent Claim
161 words
A keyboard-actuated apparatus for deriving coded electrical output signals characteristic of the individual characters and markings represented by the several keys of the apparatus and including a plurality of key-actuated members having portions that are physically moved past a common read-out zone for all of the members upon the respective keys thereof being actuated, characteristic marking means formed on the respective key-actuated members on the portions thereof that move to the common read-out zone, and electro-optic sensing means located at the common read-out zone for sensing the respective characteristic markings as they move to the common read-out zone and deriving coded electrical output signals therefrom which are characteristic of the individual characters and markings represented by the keys of the apparatus, said electro-optic sensing means having a single light path optically coupling all of the characteristic markings of the respective key-actuated members to the electro-optic sensing means in a serial manner as they are physically moved past the common read-out zone.
Claim 5
Dependent Claim
39 words
A keyboard-actuated apparatus according to claim 1 wherein the electro-optic sensing means further comprises a single light emitting element and fibre optic coupling means for directing light from the light emitting element onto the characteristic markings to enhance read-out.
Claim 6
Dependent Claim
60 words
A keyboard-actuated apparatus according to claim 2 wherein the electro-optic sensing means comprises unitary fibre optical coupling means serially viewing all of the characteristic markings as they are physically moved past the unitary fibre optical coupling means and for directing light emanating from the illuminated characteristic markings onto a photosensitive device for converting the light pulses into corresponding electrical pulses.
Claim 7
Dependent Claim
66 words
A keyboard-actuated apparatus according to claim 1 wherein the keyboard apparatus includes means for moving the key-actuated members through a forward and return movement that causes them to pass twice through the common read-out zone upon actuation, said electro-optic sensing means serving to develop two coded electric output signals one of which is redundant in response to the forward and return movements of the key-actuated members.
Claim 8
Dependent Claim
74 words
A keyboard-actuated apparatus according to claim 1 wherein the characters are alpha-numeric characters and the apparatus comprises a typewriter including a movable carriage, spacing marking means secured to and movable with the carriage, and spacing sensing means positioned to sense the marking means and derive output electric signals representative of a space in messages being encoded by said keyboard actuated apparatus for use along with the coded output electrical signals derived by said apparatus.
Claim 9
Dependent Claim
43 words
A keyboard-actuated apparatus according to claim 5 wherein the spacing marking means includes specially coded beginning of line markers which generate a characteristic coded electric output signal indicative of the return of the typewriter carriage to the start of a new line position.
Claim 10
Dependent Claim
54 words
A keyboard-actuated apparatus according to claim 1 wherein the characteristic marking means on the respective key-actuated members includes at least two sets of characteristic markers representative of upper case and lower case alphabetic letters which are selectively interposed into operative relationship with the electro-optic sensing means by the capitalization control key of the typewriter.
Claim 11
Dependent Claim
66 words
A keyboard-actuated apparatus according to claim 7 wherein the keyboard apparatus includes means for moving the key-actuated members through a forward and return movement that causes them to pass twice through the common read-out zone upon actuation, said electro-optic sensing means serving to develop two coded electric output signals one of which is redundant in response to the forward and return movement of the key-actuated members.
Claim 12
Dependent Claim
37 words
A keyboard-actuated apparatus according to claim 8 wherein the electro-opTic sensing means comprises a single light emitting element and fibre optic light coupling means for directing light from the single light emitting element onto the characteristic markings.
Claim 13
Dependent Claim
42 words
A keyboard-actuated apparatus according to claim 9 wherein the electro-optic sensing means further comprises fibre optic light coupling means for transmitting light emanating from the illuminated characteristic markings to a single photosensitive element for converting the light pulses into corresponding electrical pulses.
Claim 14
Dependent Claim
47 words
A keyboard-actuated apparatus according to claim 10 further including an auxiliary keyboard-actuated device for developing characteristic auxiliary function coded output electrical signals usable along with the coded output electrical signals developed by the main keyboard actuated apparatus to enhance the intelligence conveying capability of the overall system.
Claim 15
Dependent Claim
52 words
A keyboard-actuated apparatus according to claim 10 wherein the characteristic marking means is provided only on one side of the key-actuated member and a single electro-optic sensing means is provided at the common read-out point for serially reading out the single side of the key-actuated member having characteristic marking means provided thereon.
Claim 16
Dependent Claim
59 words
A keyboard-actuated apparatus according to claim 10 wherein characteristic marking means are provided on at least two sides of the respective key-actuated members and the electro-optic sensing means comprises a dual sided sensing means for simultaneously sensing the characteristic marking means on each of the two sides of the respective key-actuated members with only a single photo sensitive element.
Claim 17
Dependent Claim
58 words
A keyboard-actuated apparatus according to claim 1 wherein characteristic marking means are provided on at least two sides of the respective key-actuated members and the electro-optic sensing means comprises a dual sided sensing means for simultaneously sensing the characteristic marking means on each of the two sides of the respective key-actuated members with only a single photo-sensitive means.
Claim 18
Dependent Claim
34 words
A keyboard-actuated apparatus according to claim 1 wherein the characteristic marking means are permanently formed on the key-actuated members at points which move past the common read-out zone upon the respective members being actuated.
Claim 19
Dependent Claim
58 words
A keyboard-actuated apparatus according to claim 1 wherein the characteristic marking means comprises a separate attachment having the characteristic markings formed thereon and that can be secured to and removed from the key-actuated members of the apparatus at a location thereon which moves past the common read-out zone upon the respective members being actuated for changing the encoding.
Claim 20
Dependent Claim
93 words
A keyboard-actuated apparatus according to claim 1 wherein the characteristic marking means on the respective key-actuated members comprise alternate light reflecting and non-reflecting elongated strip-like areas physically arranged in a desired characteristic coded pattern, and the electro-optic sensing means comprises a single source of light for illuminating and a single electro optical pick up device for optically reading-out the characteristic coded patterns of reflecting and non-reflecting elongated strip-like areas upon the areas being moved past the view of the electro-optic means in a direction transverse to the elongated dimension of the strip-like areas.
Claim 21
Dependent Claim
57 words
A keyboard-actuated apparatus according to claim 17 further including a fibre optic light transmitting branch having at least one end commonly positioned to view and read-out the characteristic coded patterns of the respective key-actuated members and at least one remaining end positioned to direct light pulses onto the light sensitive surface of the single electro-optical pick-up device.
Claim 22
Dependent Claim
83 words
A keyboard-actuated apparatus according to claim 17 further including a fibre optic light transmitting and light receiving bundle having light transmitting and light receiving branches each having one end commonly positionEd to illuminate and read-out, respectively, the characteristic coded patterns of the respective key-actuated members and each having a remaining end positioned to be illuminated by the source of light and to direct light pulses received from the characteristic marking means onto the light sensitive surface of the single electro-optical pick-up device, respectively.
Claim 23
Dependent Claim
91 words
A keyboard-actuated apparatus according to claim 19 wherein the key-actuated members have characteristic light reflecting and non-reflecting patterns formed on at least two sides thereof and the fibre optic light transmitting and light receiving bundle comprises a dual-sided fibre optic bundle having at least two light receiving fibre optic elements positioned to view and read-out simultaneously the respective patterns on each of the sides along substantially the same single optical light path and to transmit the received coded light pulses to the light sensitive surface of the single electro-optical pick-up device.
Claim 24
Dependent Claim
42 words
A keyboard-actuated apparatus according to claim 19 wherein the attachment comprises target flags which can be secured to and removed from the key-actuated members whereby the characteristic coded reflecting and non-reflecting encoding patterns provided for respective key-actuated members can be readily changed.
Claim 25
Dependent Claim
187 words
A keyboard-actuated apparatus according to claim 1 wherein the characteristic marking means on the respective key-actuated members comprise alternate light reflecting and non-reflecting elongated strip-like areas physically arranged in a desired characteristic coded pattern, and the sensing means comprises electro-optic means for illuminating and optically reading-out the characteristic coded patterns of reflecting and non-reflecting elongated strip-like areas upon the respective key-actuated members being selectively actuated and the areas being moved past the view of the electro-optic means in a direction transverse to the elongated dimension of the strip-like areas, said electro-optic means comprising at least a source of illumination, means for directing light from said source of illumination onto the characteristic coded reflecting and non-reflecting patterns of the respective key-actuated members, light receiving means for receiving light reflected from the coded patterns on the respective key-actuated members, and a single electro-optic converting device having the light output from said light receiving means directed thereon for converting the intelligence contained in the received alternate pulses of reflected light into coded electrical signals which are characteristic of the individual characters and markings represented by the keys of the apparatus.
Claim 26
Dependent Claim
86 words
A keyboard-actuated apparatus according to claim 22 wherein the means for directing light and the light receiving means comprises a fibre optic bundle having light transmitting and light receiving branches each having one end commonly positioned to illuminate and read-out, respectively, the characteristic coded patterns of the respective key-actuated members and each having a remaining end positioned to be illuminated by the source of illumination and to direct light pulses received from the characteristic marking means onto the light sensitive surface of the electro-optic converting device.
Claim 27
Dependent Claim
88 words
A keyboard-actuated apparatus according to claim 23 wherein the characteristic light reflecting and non-reflecting patterns are formed on at least two sides of the respective key-actuated members and the light receiving means comprises a dual-sided fibre optic bundle having at least two light receiving fibre optic branches positioned to view and read-out simultaneously the respective patterns on each of the two sides along substantially the same single optical light path and to transmit the received coded light pulses to the light sensitive surface of the electro-optic converting device.
Claim 28
Dependent Claim
50 words
A keyboard-actuated apparatus according to claim 22 wherein the characteristic marking means on the respectiVe key-actuated members includes at least two sets of characteristic markers representative of upper case and lower case alphabetic letters which are selectively interposed into operative relationship with the electro-optic sensing means by the capitalization control.
Claim 29
Dependent Claim
65 words
A keyboard-actuated apparatus according to claim 25 wherein the keyboard apparatus includes means for moving the key-actuated members through a forward and return movement that causes them to pass twice through the common read-out zone upon actuation, said electro-optic sensing means serving to develop coded electric output signals one of which is redundant in response to the forward and return movements of the key-actuated members.
Claim 30
Dependent Claim
135 words
A typewriter attachment for a conventional typewriter of the kind having a plurality of key-actuated printing typeheads that are selectively physically moved to a common printing position during operation, said attachment serving to derive coded electric output signals from the typewriter during operation and comprising target flags having serially arrayed characteristic marking means formed thereon for attachment to the respective typeheads, and a single read-out electro-optical element having a single light path optically coupling the single read-out electro-optical element to the target flags after attachment to the respective typeheads for serially reading-out all of the characteristic marking means on the respective typeheads as the typeheads are selectively moved past the common printing position and deriving output coded electric signals which are characteristic of the individual characters and markings represented by the keys of the typewriter.
Claim 31
Dependent Claim
135 words
A typewriter attachment for a conventional typewriter of the kind having a plurality of key-actuated printing typeheads that are selectively physically moved to a common printing position during operation, said attachment serving to derive coded electric output signals from the typewriter during operation and comprising target flags having serially arrayed characteristic marking means formed thereon for attachment to the respective typeheads, and a single read-out electro-optical element having a single light path optically coupling the single read-out electro-optical element to the target flags after attachment to the respective typeheads for serially reading-out all of the characteristic marking means on the respective typeheads as the typeheads are selectively moved past the common printing position and deriving output coded electric signals which are characteristic of the individual characters and markings represented by the keys of the typewriter.
Claim 32
Dependent Claim
117 words
A typewriter attachment according to claim 27 further including spacing marking means having a characteristic mark for each space in a line extending across the typewriter carriage and adapted to be secured to and movable with the typewriter carriage, and spacing sensing means positioned to sense the spacing marking means and derive output electric signals representative of a space in messages being encoded by the typewriter for use along with the coded output electrical signals derived from the typeheads of the typewriter, the spacing marking means including specially coded beginning of line markers which generate a characteristic coded electric output signal indicative of the return of the typewriter carriage to the start of a new line position.
Claim 33
Dependent Claim
52 words
A typewriter attachment according to claim 27 wherein the characteristic marking means on the respective typeheads includes at least two sets of characteristic markers representative of upper case and lower case alphabetic letters which are selectively interposed into operative relationship with the sensing means by the capitalization control key of the typewriter.
Claim 34
Dependent Claim
60 words
A typewriter attachment according to claim 27 wherein the keyboard apparatus includes means for moving the key-actuated typeheads through a forward and return movement upon actuation that causes them to move twice past the common sensing means, said sensing means serving to develop coded electric output signals one of which is redundant in response to the forward and return movements.
Claim 35
Dependent Claim
105 words
A typewriter attachment according to claim 27 wherein the target flags having the characteristic marking means formed thereon for attachment to the respective key-actuated typeheads include alternate light reflecting and non-reflecting elongated strip-like areas physically arranged in a desired characteristic coded pattern, and the single read-out electro-optical element comprises at least a source of illumination, means for directing light from said source of illumination onto the characteristic patterns of the respective key-actuated typeheads, light receiving means for receiving light reflected from the coded patterns on the respective key-actuated typeheads, and a photosensitive converting element having the light output from said light receiving means directed thereon.
Claim 36
Dependent Claim
65 words
A typewriter attachment according to claim 31 wherein the light receiving means comprises a fibre optic light transmitting element having at least one end commonly positioned to view and read-out the characteristic coded patterns of the target clips on the respective key-actuated printing hammers and a remaining end positioned to direct received light pulses onto a single light sensitive surface of the photosensitive converting element.
Claim 37
Dependent Claim
93 words
A typewriter attachment according to claim 31 wherein the means for directing light and the light receiving means comprises a fibre optic light transmitting bundle having light transmitting and light receiving branches each having one end commonly positioned to illuminate and read-out, respectively, the characteristic coded patterns of the target flags on the respective key-actuated printing typeheads and each having a remaining end positioned to be illuminated by the source of illumination, and to direct light pulses received from the target clips onto the light sensitive surface of the photosensitive converting element, respectively.
Claim 38
Dependent Claim
77 words
A typewriter attachment according to claim 31 wherein the target flags have characteristic light reflecting and non-reflecting patterns formed on at least two sides thereof and the light receiving means comprises a dual-sided fibre optic bundle having at least two light receiving fibre optic branches positioned to view and read-out simultaneously the respective patterns on each of the sides and to transmit the received coded light pulses to the light sensitive surface of the photosensitive converting means.
Claim 39
Dependent Claim
41 words
A typewriter attachment according to claim 31 wherein the target flags are detachable whereby the characteristic coded reflecting and non-reflecting patterns provided for a respective key-actuated printing typehead can be secured to and removed from the typeheads for changing the encoding.
Claim 40
Dependent Claim
54 words
A typewriter attachment according to claim 31 wherein the characteristic marking means on the respective typehead target flags includes at least two sets of characteristic markers representative of upper case and lower case alphabetic letters which are selectively interposed into operative relationship with the sensing means by the capitalization control key of the typewriter.
Claim 41
Dependent Claim
63 words
A typewriter attachment according to claim 31 wherein the light receiving means comprises a fibre optic light transmitting element having at least one end commonly positioned to view and read-out the characteristic coded patterns of the target flags on the respective key-actuated typeheads and a remaining end positioned to direct received light pulses onto a light sensitive surface of the photosensitive converting element.
Claim 42
Dependent Claim
92 words
A typewriter attachment according to claim 31 wherein the means for directing light and the light receiving means comprises a fibre optic light transmitting bundle having light transmitting and light receiving branches each having one end commonly positioned to illuminate and read-out, respectively, the characteristic coded patterns of the target flags on the respective key-actuated typeheads and each having a remaining end positioned to be illuminated by the source of illumination, and to direct light pulses received from the target flags onto the light sensitive surface of the photosensitive converting element, respectively.
Claim 43
Dependent Claim
77 words
A typewriter attachment according to claim 38 wherein the target flags have characteristic light reflecting and non-reflecting patterns formed on at least two sides thereof and the light receiving means comprises a dual-sided fibre optic bundle having at least two light receiving fibre optic branches positioned to view and read-out simultaneously the respective patterns on each of the sides and to transmit the received coded light pulses to the light sensitive surface of the electro-optic converting element.
Claim 44
Dependent Claim
188 words
An attachment for a conventional key-actuated typewriter for converting the key-actuated typewriter to derive a coded elEctric output signals which are representative of each of the several characters and markings formed on the keys of the typewriter, said attachment comprising a detachable clip designed to be secured to a respective movable member of the typewriter which is physically moved in response to the actuation of a respective key of the typewriter, said detachable clip having alternate light reflecting and non-reflecting elongated strip-like code marks physically arranged in a desired serially arrayed characteristic coded pattern and adapted to be mounted on the movable members so as to move the alternate elongated strip-like code marks in a direction substantially perpendicular to the longest dimension of the strip-like code marks, each attachment having two sets of characteristic coded patterns of alternate light reflecting and non-reflecting code marks with one set being disposed over the other and with the two sets being representative of lower case and upper case letters, respectively, and positioned in operative relationship with an electrooptical sensing means in response to actuation of the capitalization control of the typewriter.
Claim 45
Dependent Claim
188 words
An attachment for a conventional key-actuated typewriter for converting the key-actuated typewriter to derive a coded elEctric output signals which are representative of each of the several characters and markings formed on the keys of the typewriter, said attachment comprising a detachable clip designed to be secured to a respective movable member of the typewriter which is physically moved in response to the actuation of a respective key of the typewriter, said detachable clip having alternate light reflecting and non-reflecting elongated strip-like code marks physically arranged in a desired serially arrayed characteristic coded pattern and adapted to be mounted on the movable members so as to move the alternate elongated strip-like code marks in a direction substantially perpendicular to the longest dimension of the strip-like code marks, each attachment having two sets of characteristic coded patterns of alternate light reflecting and non-reflecting code marks with one set being disposed over the other and with the two sets being representative of lower case and upper case letters, respectively, and positioned in operative relationship with an electrooptical sensing means in response to actuation of the capitalization control of the typewriter.
Claim 46
Dependent Claim
32 words
An attachment according to claim 41 wherein one end of the elongated spacing member is provided with a specially coded pattern which is indicative of the end of a line of typing.
Claim 47
Dependent Claim
42 words
An electro-optical typewriter attachment according to claim 43 wherein the light transmitting optical system comprises at least a focusing lens for gathering light from the source of illumination and focusing it to a fine spot through which the key actuated typeheads pass.
Claim 48
Dependent Claim
66 words
An electro-optical typewriter attachment according to claim 43 wherein the light transmitting optical system comprises at least one additional light transmitting branch path of the fibre optic bundle having one end positioned to accept light from the source of illumination and a remaining end position to direct light in a well defined beam onto the key-actuated typeheads of the typewriter as they pass the electro-optical attachment.
Claim 49
Dependent Claim
53 words
An electro-optical typewriter attachment according to claim 45 wherein the fibre optic bundle includes dual transmitting and receiving branch paths positioned to respectively and simultaneously illuminate and read-out characteristic coded reflecting and non-reflecting patterns formed on at least two sides of the respective key-actuated typeheads along substantially the same single optical lighT path.
Claim 50
Dependent Claim
151 words
An attachment for use with typewriters for deriving coded electric output signals representative of the characters being printed-out by the typewriter in addition to the hard copy print-out normally provided by such typewriters, said attachment comprising encoding means comprised by serially arrayed light reflective code marks operatively driven synchronously with the typewriter printing element for characteristically encoding each individual character imprinting movement of the typewriter with a unique and identifiable characteristic code, a single electro-optic sensing means optically coupled to said encoding means through a single optical path for serially sensing all of the light reflective code marks comprising the respective characteristic codes representative of the characters being printed-out by the typewriter over the single optical path, and coded electric signal deriving means responsive to the sensing means for deriving serially-coded electric output signals representative of the characters being printed-out by the typewriter and suitable for use with data processing systems.
Claim 51
Dependent Claim
151 words
An attachment for use with typewriters for deriving coded electric output signals representative of the characters being printed-out by the typewriter in addition to the hard copy print-out normally provided by such typewriters, said attachment comprising encoding means comprised by serially arrayed light reflective code marks operatively driven synchronously with the typewriter printing element for characteristically encoding each individual character imprinting movement of the typewriter with a unique and identifiable characteristic code, a single electro-optic sensing means optically coupled to said encoding means through a single optical path for serially sensing all of the light reflective code marks comprising the respective characteristic codes representative of the characters being printed-out by the typewriter over the single optical path, and coded electric signal deriving means responsive to the sensing means for deriving serially-coded electric output signals representative of the characters being printed-out by the typewriter and suitable for use with data processing systems.
Claim 52
Dependent Claim
72 words
An attachment according to claim 47 wherein the encoding means comprises alternate light reflecting and minimal light reflecting elongated strip-like areas physically arranged in a predetermined pattern and the electro-optic sensing means comprises a single light source for illuminating and a single photo-electric conversion device for serially reading out all of the serially arrayed characteristic predetermined patterns of reflecting and minimally reflecting areas as they are moved serially past the optical element.
Claim 53
Dependent Claim
91 words
An attachment according to claim 48 wherein the optical means comprises at least a source of illumination, light transmitting means for directing light from said source of illumination onto the predetermined pattern of light reflecting and minimally reflecting areas, light receiving means for receiving back light pulses reflected from the light reflecting areas and directing the received light to the single photo-electric conversion device; said photo-electric conversion device serving to convert the received light pulses into corresponding characteristic coded pulsed electric output signals representative of characters being printed-out by the typewriter.
Claim 54
Dependent Claim
98 words
An attachment according to claim 49 wherein the light transmitting means and the light receiving means comprises a fibre optic bundle having light transmitting and light receiving branches each having one end commonly positioned to illuminate and read-back, respectively, the pattern of light reflecting areas, said light transmitting fibre optic branch having its remaining end positioned to be illuminated by the source of illumination and said light receiving fibre optic branch having its remaining end positioned to image light pulses received from the pattern of light reflecting areas onto the light sensitive surface of the photo-electric conversion device.
Claim 55
Dependent Claim
50 words
An attachment according to claim 50 wherein the encoding means comprises characteristic encoding marks formed on only one side of a member movable synchronously with the printing movement of the typewriter and a single sided sensing fibre optic bundle is provided for sensing and reading out the characteristic encoding marks.
Claim 56
Dependent Claim
61 words
An attachment according to claim 50 wherein the encoding means comprises characteristic encoding marks formed on at least two sides of a member movable synchronously with the printing movement of the typewriter, and the sensing means comprises a dual-sided sensing fibre optic bundle for simultaneously sensing the dual set of characteristic encoding marks formed on the two sides of the member.
Claim 57
Dependent Claim
43 words
An attachment according to claim 47 wherein there are at least two sets of encoding means representative of upper and lower case alphabetic letters which are selectively interposed into operative relationship with the sensing means by the capitalization control key of the typewriter.
Claim 58
Dependent Claim
71 words
An attachment according to claim 47 wherein the typewriter has individual printing elements which upon actuation travel through a forward and return movement and which pass through the encoding means twice in sensing relationship with the sensing means during the forward and return movement, said sensing means serving to develop coded electric output signals one of which is redundant in response to the forward and return movement of the key-actuated members.
Claim 59
Dependent Claim
75 words
An attachment according to claim 47 wherein the characters being typed out by the typewriter are alpha-numberic characters and the typewriter includes a movable carriage, and the attachment further includes spacing marking means secured to and movable with the carriage, and spacing sensing means positioned to sense the spacing marking means and derive output electric signals representative of spaces in messages being encoded by the typewriter for use along with the coded electric output signals.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |