Patent US4878977A successfully refreshed from Google Patents.
US3983804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing device operating with a cycloidal printing motion for data processing machines
Assignee: US Philips Corp
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Filing: 1974-08-13
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Granted: 1976-10-05
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Expires: 1994-08-13
Abstract
Abstract A printing device operating with a cycloidal printing motion and having a revolving type carrier. The types on the type carrier are guided over a cycloidal path by a planetary gear drive. The type is carried on an elastic band which is carried between two rollers.
Inventors
- 👤 Joachim Thienemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:00
CPC Classifications
B; B41; B41J; B41J1/00; B41J1/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
A printing device operating with a cycloidal printing motion and having a revolving type carrier, the types of which are guided over cycloidal paths by a planetary gear drive having two degrees of freedom, a selected character being printed at the stationary points of the cycloidal path, comprising a sun gear mounted for rotation about a first axis, a connection member fixed to said first axis, a second axis rotatably carried at one end of said connection member, a planet gear mounted for rotation about said second axis in engagement with said sun gear, a pressure roller coupled to said planet gear and mounted for rotation about said second axis, a third axis carried by said connection member spaced from said first end, a guide roller mounted to said connection member for rotation about said third axis, and an elastic band carrying type arranged about said pressure and guide rollers.
Claim 2
Dependent Claim
150 words
A printing device operating with a cycloidal printing motion and having a revolving type carrier, the types of which are guided over cycloidal paths by a planetary gear drive having two degrees of freedom, a selected character being printed at the stationary points of the cycloidal path, comprising a sun gear mounted for rotation about a first axis, a connection member fixed to said first axis, a second axis rotatably carried at one end of said connection member, a planet gear mounted for rotation about said second axis in engagement with said sun gear, a pressure roller coupled to said planet gear and mounted for rotation about said second axis, a third axis carried by said connection member spaced from said first end, a guide roller mounted to said connection member for rotation about said third axis, and an elastic band carrying type arranged about said pressure and guide rollers.
Claim 3
Dependent Claim
20 words
A printing device as claimed in Claim 1, wherein an imaginary plane extends through said first, second and third axes.
Claim 4
Dependent Claim
24 words
A printing device as claimed in claim 2, said elastic band is a Mobius band and is provided with types on both sides thereof.
References Cited (Backward Citations)
US823080A
Cited
US3144820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |