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US4171167A Expired / Lapsed US ⏱️ 0.0 years remaining

Type head cleaner

Assignee: VIKOR CO Inc
•
Filing: 1977-08-08
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Granted: 1979-10-16
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Expires: 1997-08-08
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Abstract

Abstract A cleaning device for a removable typewriter type head has an elongated stem with a platform thereon for snugly securing the type head to the stem. The stem terminates in a cover which is internally threaded for mating with a liquid container which carries a scouring element on the interior thereof through which the type head is moved when the cover is placed back on the container, together with a liquid type cleaner for dissolving ink and other accumulations on the type head.

Inventors

  • 👤 Everett W. Swartwout

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 20:39
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/17

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 140 words
A cleaner for cleaning a removable typewriter type head of the kind having a generally spherical type surface and an aperture through a portion thereof, and locking means associated with said aperture for securing said head to a typewriter, said cleaner comprising A. means forming a stem for extension through said aperture, B. means associated with said stem for engagement with said type head to prevent rotation of said head about said stem when torque is applied thereto, said type head engagement means comprising means forming a platform on said stem and having at least one shoulder on said platform for engagement with said type head, and C. a container for holding a cleaning liquid and having in the interior thereof a cleaning element defining a yieldable passageway providing snug passage to said head when said stem is passed therethrough.
Claim 2
Dependent Claim 140 words
A cleaner for cleaning a removable typewriter type head of the kind having a generally spherical type surface and an aperture through a portion thereof, and locking means associated with said aperture for securing said head to a typewriter, said cleaner comprising A. means forming a stem for extension through said aperture, B. means associated with said stem for engagement with said type head to prevent rotation of said head about said stem when torque is applied thereto, said type head engagement means comprising means forming a platform on said stem and having at least one shoulder on said platform for engagement with said type head, and C. a container for holding a cleaning liquid and having in the interior thereof a cleaning element defining a yieldable passageway providing snug passage to said head when said stem is passed therethrough.
Claim 3
Dependent Claim 30 words
A cleaner according to claim 1 which further includes means forming a groove in said stem for further engagement with said type head to secure said head to said stem.
Claim 4
Dependent Claim 54 words
A cleaner according to claim 2 in which said cleaning element comprises means forming a resilient scrubbing pad in the form of a plug secured to the interior of said container, said passageway being centrally formed in said plug and being sized to snugly contact said type head when said head is passed therethrough.
Claim 5
Dependent Claim 18 words
A cleaner according to claim 3 in which said passageway is defined by scalloped edges of said plug.
Claim 6
Dependent Claim 17 words
A cleaner according to claim 4 in which said cleaning element comprises a liquid absorbent scouring material.
Claim 7
Dependent Claim 158 words
A cleaner for cleaning a removable typewriter type head of the kind having a generally spherical type surface and, an aperture through a portion thereof for mounting said head on a typewriter, locking means associated with said aperture for securing said head to said typewriter, and a circumferentially extending serrated surface formed thereon, said cleaner comprising: A. a liquid container having a yieldable cleaning element mounted on the interior thereof and defining, by means of a central aperture therethrough, a snug passageway for said type head, and B. a liquid sealing cover for said container and having thereon a stem including thereon (1) means forming a platform having at least one shoulder for engagement with said serrated surface of said type head to prevent rotation of said head with respect to said stem when torque is applied to said head, and (2) locking means cooperating with said head to prevent inadvertent removal of said head from said stem.
Claim 8
Dependent Claim 158 words
A cleaner for cleaning a removable typewriter type head of the kind having a generally spherical type surface and, an aperture through a portion thereof for mounting said head on a typewriter, locking means associated with said aperture for securing said head to said typewriter, and a circumferentially extending serrated surface formed thereon, said cleaner comprising: A. a liquid container having a yieldable cleaning element mounted on the interior thereof and defining, by means of a central aperture therethrough, a snug passageway for said type head, and B. a liquid sealing cover for said container and having thereon a stem including thereon (1) means forming a platform having at least one shoulder for engagement with said serrated surface of said type head to prevent rotation of said head with respect to said stem when torque is applied to said head, and (2) locking means cooperating with said head to prevent inadvertent removal of said head from said stem.
Claim 9
Dependent Claim 44 words
A cleaner according to claim 6 in which said cleaning element comprises a plug fixedly mounted on the interior of said container, said aperture in said plug having scalloped edges defining a first passageway diameter larger than the maximum diameter of said type head.
Claim 10
Dependent Claim 29 words
A cleaner according to claim 7 in which said cleaning element comprises a resilient, liquid absorbent scouring pad mounted to scour said head as said head is passed therethrough.
Claim 11
Dependent Claim 22 words
A cleaner according to claim 8 which includes a liquid solvent in said container for removing unwanted accumulation from said type head.
Claim 12
Dependent Claim 52 words
A cleaner according to claim 9 in which said locking means cooperating with said head to prevent inadvertent removal of said head from said stem comprises means forming a groove around said stem at an end thereof and engaging said type head locking means therein to secure said head to said stem.

References Cited (Backward Citations)

US2232680A Cited
US2926768A Cited
US3307677A Cited
US3583016A Cited
US3748676A Cited
US3740784A Cited
US3750219A Cited
US3806983A Cited
US4017933A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-10-15 1983-04-16 1983-10-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-10-15 1987-04-16 1987-10-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-10-15 1991-04-16 1991-10-16 $7700.00 Window Closed / Lapsed

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