US3129801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power operated typewriter
Assignee: Underwood Corp
•
Filing: 1962-05-01
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Granted: 1964-04-21
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Expires: 1982-05-01
Abstract
No abstract record available.
Inventors
- 👤 John F Heyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:39
CPC Classifications
B; B41; B41J; B41J7/00; B41J7/92; B41J7/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A SPRING LINK MOTION TRANSMITTING ASSEMBLY COMPRISING IN COMBINATION, (A) TWO WIRE RODS EXTENDING TOWARD EACH OTHER IN A STRAIGHT LINE AND INCLUDING PORTIONS OF GENERALLY COMPLEMENTAL FRACTIONAL CROSS SECTION EXTENDING IN A LENGTHWISE OVERLAPPING RELATIONSHIP AND SLIDABLY PARALLEL TO EACH OTHER, (B) AND A DISTENSIBLE SPRING COIL BEING PLACED AXIALLY PARALLEL UPON SAID WIRE RODS WITH AT LEAST SAID OVERLAPPING ROD PORTIONS SLIDABLY AND STIFFLY CONTAINED THEREIN AND WITH THE SPRING COIL AT OPPOSITE LOCATIONS BEYOND SAID ROD PORTIONS HAVING IMPOSITIVE ANCHORING ATTACHMENT ON SAID RODS THROUGH SOME END-TURNS THEREON HAVING A DIAMETRICALLY CONTRACTING FRICTION HOLD THEREON, (C) THE SAID RODS EMBODYING ABUTMENT MEANS FOR SAID SPRING COIL BY ITS ENDS TO LOCATE OPPOSITELY THEREAGAINST THROUGH SHOCK MOVEMENTS OF THE SPRING COIL ENDS LENGTHWISE FROM EACH OTHER WHEN THE SPRING COIL TURNS COMPACT AGAINST EACH OTHER AFTER THE SPRING LINK ASSEMBLY HAS TRANSMITTED MOTION.
Claim 2
Dependent Claim
145 words
A SPRING LINK MOTION TRANSMITTING ASSEMBLY COMPRISING IN COMBINATION, (A) TWO WIRE RODS EXTENDING TOWARD EACH OTHER IN A STRAIGHT LINE AND INCLUDING PORTIONS OF GENERALLY COMPLEMENTAL FRACTIONAL CROSS SECTION EXTENDING IN A LENGTHWISE OVERLAPPING RELATIONSHIP AND SLIDABLY PARALLEL TO EACH OTHER, (B) AND A DISTENSIBLE SPRING COIL BEING PLACED AXIALLY PARALLEL UPON SAID WIRE RODS WITH AT LEAST SAID OVERLAPPING ROD PORTIONS SLIDABLY AND STIFFLY CONTAINED THEREIN AND WITH THE SPRING COIL AT OPPOSITE LOCATIONS BEYOND SAID ROD PORTIONS HAVING IMPOSITIVE ANCHORING ATTACHMENT ON SAID RODS THROUGH SOME END-TURNS THEREON HAVING A DIAMETRICALLY CONTRACTING FRICTION HOLD THEREON, (C) THE SAID RODS EMBODYING ABUTMENT MEANS FOR SAID SPRING COIL BY ITS ENDS TO LOCATE OPPOSITELY THEREAGAINST THROUGH SHOCK MOVEMENTS OF THE SPRING COIL ENDS LENGTHWISE FROM EACH OTHER WHEN THE SPRING COIL TURNS COMPACT AGAINST EACH OTHER AFTER THE SPRING LINK ASSEMBLY HAS TRANSMITTED MOTION.
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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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |