Patent US2788511A successfully refreshed from Google Patents.
Patent US4017933A successfully refreshed from Google Patents.
US4017933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typeball cleaning apparatus
Assignee: Individual
•
Filing: 1976-05-14
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Granted: 1977-04-19
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Expires: 1996-05-14
Abstract
Abstract A typeball cleaning apparatus is provided for cleaning typewriter and terminal typeballs of the type having a bore therein with an engaging mechanism in the bore for engaging a mounting on the typewriter or terminal. The apparatus includes a container having an open top. A plurality of brushes have one end mounted on the interior sides of the container with the other end of each of the brushes extending towards the axis of the container. A top member with an aperture therethrough covers the container. A crank is provided which has an engaging portion which passes through the aperture in the top member into the container. The engaging portion is insertable into the bore in the typeball and engages the engaging mechanism in the typeball. The crank also includes a handle portion which is on the exterior of the container for turning the crank.
Inventors
- 👤 Raymond A. Aja
- 👤 Alphonse C. Dufault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:34
CPC Classifications
A; A46; A46B; A46B9/00; A46B9/02; B; B41; B41J; B41J29/00; B41J29/17; A46B2200/00; A46B2200/30; A46B2200/3073
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
A typeball cleaning apparatus for cleaning typewriter and terminal typeballs of the type having a bore therein with an engaging mechanism in the bore for engaging a mounting on the typewriter or terminal, said apparatus comprising: a. a liquid container having an open top; b. a plurality of brushes having one end mounted on the interior sides of said container, and the other end extending toward the axis of the container; c. a top means for covering said container said top means having an aperture therein; and d. a crank having an engaging portion means, which passes through the aperture in said top means into said container, for insertion into the bore in said typeball for engaging and coupling with the engaging mechanism in the typeball, and a handle for turning said crank wherein when said crank is turned, a typeball coupled therewith is rotated such that its type face contacts said brushes whereby it is cleaned.
Claim 2
Dependent Claim
157 words
A typeball cleaning apparatus for cleaning typewriter and terminal typeballs of the type having a bore therein with an engaging mechanism in the bore for engaging a mounting on the typewriter or terminal, said apparatus comprising: a. a liquid container having an open top; b. a plurality of brushes having one end mounted on the interior sides of said container, and the other end extending toward the axis of the container; c. a top means for covering said container said top means having an aperture therein; and d. a crank having an engaging portion means, which passes through the aperture in said top means into said container, for insertion into the bore in said typeball for engaging and coupling with the engaging mechanism in the typeball, and a handle for turning said crank wherein when said crank is turned, a typeball coupled therewith is rotated such that its type face contacts said brushes whereby it is cleaned.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1, wherein said container has four sides and one of said plurality of brushes is mounted on each of said sides.
Claim 4
Dependent Claim
24 words
The apparatus of claim 1, wherein said container has four sides and each of said plurality of brushes is mounted between two adjacent sides.
Claim 5
Dependent Claim
45 words
The apparatus of claim 1, wherein said crank includes a stopper mounted on said engaging portion means, said stopper contacting the outside surface of said top means thereby preventing the insertion of said engaging portion means into said container by more than a predetermined amount.
Claim 6
Dependent Claim
35 words
The apparatus of claim 1, wherein the distance between said other ends of each of said brushes provides an opening smaller than the dimensions of the typeball whereby said brushes engage said typeball under pressure.
Claim 7
Dependent Claim
25 words
The apparatus of claim 5, wherein said other ends of each of said brushes are curved, the curvature corresponding to the curvature of the typeball.
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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |