← Back to Patent Explorer
US3129801A Expired / Lapsed US ⏱️ 0.0 years remaining

Power operated typewriter

Assignee: Underwood Corp
•
Filing: 1962-05-01
•
Granted: 1964-04-21
•
Expires: 1982-05-01
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

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.

References Cited (Backward Citations)

US394607A Cited
US776103A Cited
US694015A Cited
US704869A Cited
US884735A Cited
US1037339A Cited
US2675109A Cited
US2894613A Cited
US2871612A Cited

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

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag