Patent US3730322A successfully refreshed from Google Patents.
US3730322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Changeable type heads and changeable key caps
Assignee: TRIUMPH-ADLER AG A CORP OF GERMANY
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Filing: 1970-03-24
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Granted: 1973-05-01
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Expires: 1990-03-24
Abstract
Abstract Type elements bearing special types thereon are constructed for snap-on application onto a type lever in a manner so that any such type head, when applied, becomes solidly secure on the type lever, except in a direction counter to that in which centrifugal force tends to have a throw-off effect thereon. Flexibly displaceable means allow the type heads to be readily moved into and out of applied position. In conformance with the applicable type heads, there are character bearing caps adapted to be snapped onto and off type keys.
Inventors
- 👤 L Hare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:38
CPC Classifications
B; B41; B41J; B41J5/00; B41J5/08; B41J5/12; B41J1/00; B41J1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
384 words
A type bar assembly for removably securing a type element onto a type bar, the combination comprising: a type element having a type bearing face formed thereon, a type bar for carrying said type element on an end portion thereof and being supported for pivotable movement about a pivot, said end portion of said type bar terminating in the direction centrifugal force acts during a pivotable movement of said type bar and having a forward edge facing in the direction of a printing movement and a rearward edge facing in the direction of a return movement, said type element having wall means defining a slot with a base portion adjacent the type bearing face for receiving the end portion of said type bar, a first locating means formed on said type element for engaging and guiding the end portion of said type bar into the slot of said type element, a second locating means formed on said type element for engaging and guiding the end portion of said type bar into the slot of said type element, said end portion of said type bar being received into the slot of said type element between said first and second locating means with the rearward edge engaging said first locating means and the forward edge engaging said second locating means, a resilient biasing means for urging said type element toward the end of said type bar and being engaged by said type element upon receipt of the end portion of said type bar between said first and second locating means, said forward edge of said type bar having a notch formed therein and opening away from the end of said type bar and generally toward the pivotal support of said type bar, said second locating means being spaced from the base portion of said type element and being received in the notch under the urging of said resilient biasing means to prevent movement of said type element toward the end of said type bar, said base portion of said slot formed in said type element engaging said forward edge of said end portion upon receipt of said second locating means in said notch, and said first locating means engaging said rearward edge of said end portion upon receipt of said second locating means into said notch.
Claim 2
Dependent Claim
384 words
A type bar assembly for removably securing a type element onto a type bar, the combination comprising: a type element having a type bearing face formed thereon, a type bar for carrying said type element on an end portion thereof and being supported for pivotable movement about a pivot, said end portion of said type bar terminating in the direction centrifugal force acts during a pivotable movement of said type bar and having a forward edge facing in the direction of a printing movement and a rearward edge facing in the direction of a return movement, said type element having wall means defining a slot with a base portion adjacent the type bearing face for receiving the end portion of said type bar, a first locating means formed on said type element for engaging and guiding the end portion of said type bar into the slot of said type element, a second locating means formed on said type element for engaging and guiding the end portion of said type bar into the slot of said type element, said end portion of said type bar being received into the slot of said type element between said first and second locating means with the rearward edge engaging said first locating means and the forward edge engaging said second locating means, a resilient biasing means for urging said type element toward the end of said type bar and being engaged by said type element upon receipt of the end portion of said type bar between said first and second locating means, said forward edge of said type bar having a notch formed therein and opening away from the end of said type bar and generally toward the pivotal support of said type bar, said second locating means being spaced from the base portion of said type element and being received in the notch under the urging of said resilient biasing means to prevent movement of said type element toward the end of said type bar, said base portion of said slot formed in said type element engaging said forward edge of said end portion upon receipt of said second locating means in said notch, and said first locating means engaging said rearward edge of said end portion upon receipt of said second locating means into said notch.
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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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |