US3904015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-driven typewriter
Assignee: Individual
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Filing: 1972-11-07
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Granted: 1975-09-09
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Expires: 1992-11-07
Abstract
Abstract A power-driven typewriter comprising a shiftable carrier supporting a rotatable and axially movable, flexible type drum having a plurality of type characters therearound. Type keys, when depressed, each condition one each of two groups of actuators and cause operation of a drive member to operate the two conditioned actuators, one of which is effective to rotate the type drum from any position to a new position and the other is effective to raise the type drum to a selected position to thus align a type character corresponding to the key depressed at the printing point. Means are provided to dampen torsional oscillation of the type drum and its drive mechanism prior to printing. Readily interchangeable ink transfer ribbon cassettes for both fabric and for film ribbons are provided. Also, type drums having different type characters or type styles may be readily interchanged.
Inventors
- 👤 Robert E Boyden
- 👤 Rii Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:40
CPC Classifications
B; B41; B41J; B41J33/00; B41J33/14; B41J33/24; B41J33/26; B41J7/00; B41J7/50; B41J7/52
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
184 words
A typewriter comprising a carrier, means supporting said carrier for movement along a record medium, a single element printing head having a plurality of rows of type characters thereon spaced apart in a first direction, head guide means on said carrier guiding said head for movement in said first direction, head moving means for moving said head in said first direction to different positions to align different ones of said rows of type characters at a printing point, ribbon mounting means supported by said carrier for receiving an ink transfer ribbon, ribbon positioning means responsive to said head moving means for moving said ribbon in said first direction to different ink transferring positions relative to said printing point, said ribbon positioning means including first means on said head moving means and second means on said ribbon mounting means operatively engaging said first means to effect a different particular ink transfer position corresponding to each particular head position in which one of said rows of type characters is aligned with said printing point, and means for imprinting an aligned type character onto said record medium.
Claim 2
Dependent Claim
184 words
A typewriter comprising a carrier, means supporting said carrier for movement along a record medium, a single element printing head having a plurality of rows of type characters thereon spaced apart in a first direction, head guide means on said carrier guiding said head for movement in said first direction, head moving means for moving said head in said first direction to different positions to align different ones of said rows of type characters at a printing point, ribbon mounting means supported by said carrier for receiving an ink transfer ribbon, ribbon positioning means responsive to said head moving means for moving said ribbon in said first direction to different ink transferring positions relative to said printing point, said ribbon positioning means including first means on said head moving means and second means on said ribbon mounting means operatively engaging said first means to effect a different particular ink transfer position corresponding to each particular head position in which one of said rows of type characters is aligned with said printing point, and means for imprinting an aligned type character onto said record medium.
Claim 3
Dependent Claim
53 words
A typewriter according to claim 1 comprising ribbon guide means for guiding said ribbon past said printing point and intermediate said head and said record medium, means for advancing said ribbon endwise over said ribbon guide means, and wherein said first means is camming means and said second means is cam following means.
Claim 4
Dependent Claim
70 words
A typewriter according to claim 1 wherein said ribbon mounting means comprises a ribbon guide for guiding said ribbon past said printing point, means for advancing said ribbon endwise over said ribbon guide, pivot means for pivotally supporting said ribbon guide on said carrier to enable movement of said ribbon to said ink transferring positions, said pivot means being movable to facilitate removal of said ribbon guide from said carrier.
Claim 5
Dependent Claim
79 words
A typewriter according to claim 1 comprising a ribbon guide for guiding said ribbon past said printing point, means for advancing said ribbon endwise over said ribbon guide, spaced aligned bearings on one of said carrier and said ribbon guide, spaced pivots carried by the other of said carrier and said ribbon guide and journalled in said bearings, one of said pivots being movable endwise relative to the other to enable removal of said ribbon guide from said carrier.
Claim 6
Dependent Claim
171 words
A typewriter comprising a. a carrier, b. means supporting said carrier for movement along a record medium, c. a single element printing head having a plurality of axially and circumferentially spaced type characters thEreon, d. support means on said carrier for movably supporting said head, e. head moving means for axially moving said head to align different ones of said type characters at a printing point, f. an ink transfer ribbon, g. a cassette on which said ribbon is mounted, said cassette including a ribbon guide for guiding said ribbon endwise past said printing point, ribbon moving means for advancing said ribbon endwise, means for pivotally mounting said cassette on said carrier, and ribbon positioning means on said ribbon guide operably movable by means on said head moving means for pivoting said ribbon guide from a position locating said ribbon below the said printing point to different particular ink transferring positions locating said ribbon in alignment with said printing point, each ink transferring position corresponding to a particular axial head position.
Claim 7
Dependent Claim
171 words
A typewriter comprising a. a carrier, b. means supporting said carrier for movement along a record medium, c. a single element printing head having a plurality of axially and circumferentially spaced type characters thEreon, d. support means on said carrier for movably supporting said head, e. head moving means for axially moving said head to align different ones of said type characters at a printing point, f. an ink transfer ribbon, g. a cassette on which said ribbon is mounted, said cassette including a ribbon guide for guiding said ribbon endwise past said printing point, ribbon moving means for advancing said ribbon endwise, means for pivotally mounting said cassette on said carrier, and ribbon positioning means on said ribbon guide operably movable by means on said head moving means for pivoting said ribbon guide from a position locating said ribbon below the said printing point to different particular ink transferring positions locating said ribbon in alignment with said printing point, each ink transferring position corresponding to a particular axial head position.
Claim 8
Dependent Claim
97 words
A typewriter according to claim 1 wherein said head moving means includes an arm supported for pivotal movement about an axis, said arm operatively engaging said head at a position spaced from said axis and means for effecting pivotal movement of said arm, said first means is a stud projecting from said arm spaced from said axis, and said second means is a camming surface on said ribbon mounting means which is in engagement with said stud whereby pivotal movement of said arm effects moving said head and said ribbon in said first direction in direct correspondence.
Claim 9
Dependent Claim
30 words
A typewriter according to claim 6 wherein said ribbon is an endless ribbon and said ribbon guide means includes means for twisting said ribbon 180* during said endwise advancement thereof.
Claim 10
Dependent Claim
130 words
A typewriter commprising a carrier, a platen, means supporting said carrier for movement along the platen, a single element printing head having a plurality of rows of type characters thereon spaced apart in a first direction, head moving means for selectively moving said head to align selected ones of said rows of type characters at a printing point, ribbon support means, an ink transfer ribbon on said support means for movement along the platen, ribbon positioning means, said head moving means having first means which engages means on said ribbon positioning means for moving said ribbon to different ink transferring positions relative to said printing point, each ink transferring position corresponding to the position of the head, and means for effecting impact of a selected type character on said ribbon.
Claim 11
Dependent Claim
130 words
A typewriter commprising a carrier, a platen, means supporting said carrier for movement along the platen, a single element printing head having a plurality of rows of type characters thereon spaced apart in a first direction, head moving means for selectively moving said head to align selected ones of said rows of type characters at a printing point, ribbon support means, an ink transfer ribbon on said support means for movement along the platen, ribbon positioning means, said head moving means having first means which engages means on said ribbon positioning means for moving said ribbon to different ink transferring positions relative to said printing point, each ink transferring position corresponding to the position of the head, and means for effecting impact of a selected type character on said ribbon.
Claim 12
Dependent Claim
40 words
A typewriter as defined in claim 8 wherein said ribbon positioning means includes a cam surface on said ribbon support means and wherein said first means is cam operating means on said head moving means acting against said cam surface.
Claim 13
Dependent Claim
92 words
A typewriter as defined in claim 8 wherein said head moving means includes an arm supported for pivotal movement about an axis, said arm operatively engaging said head at a position spaced from said axis and wherein said ribbon positioning means includes a cam surface on said ribbon support means, cam operating means on said arm spaced from said axis and acting against said cam surface, and means for effecting pivotal movement of said arm effecting moving said head to selected positions and movement of said ribbon to corresponding ink transferring positions.
Claim 14
Dependent Claim
23 words
A typewriter as defined in claim 9 wherein said ribbon is housed within a cassette and said cam surface is on said cassette.
Claim 15
Dependent Claim
67 words
A typewriter as defined in claim 8 wherein said ribbon support means includes a ribbon guide for guiding said ribbon past said printing point, pivot means for pivotally supporting said ribbon guide on said carrier spaced from said platen and wherein said ribbon position means includes a cam surface on said ribbon guide and cam operating means on said head moving means acting against said cam surface.
Claim 16
Dependent Claim
68 words
A typewriter as defined in claim 12 wherein said pivot means includes spaced aligned bearings on one of said carrier and said ribbon guide and spaced pivots on the other of said carrier and said ribbon guide and journalled in said bearings and wherein at least one of the pivots and bearings is movable relative to the carrier to enable removal of said ribbon guide from the carrier.
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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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |