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US3771222A Expired / Lapsed US ⏱️ 0.0 years remaining

An apparatus for cutting and core-stripping an electric cord

Assignee: Individual
•
Filing: 1971-12-09
•
Granted: 1973-11-13
•
Expires: 1991-12-09
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Abstract

Abstract An apparatus for the cutting and core-stripping of an electric cord comprising a cutter having circular openings formed in the contact portions of its cutting edges to cut cords. The openings are provided with cutting edges to strip the cords and take out inner core. A bevel head rivet functions as a fulcrum of a lever that is placed near the center of the transverse width of upper and lower leaf springs. Both springs are cut to form T - shaped or I - shaped cutters.

Inventors

  • 👤 Y Sakuma

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 21:17
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/12; H02G1/1202; H02G1/1204; H02G1/1207; H02G1/1209; H02G1/1214

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 294 words
An apparatus for severing electric wires and for stripping insulation from such wires, comprising: a. a pair of flexible metal members each being relatively wide at one end and relatively narrow at the other, opposite end, b. means rigidly securing the narrow ends of the members together in a flat, overlying relationship, c. one of the members being bent intermediate its ends such that the wide ends of the two members diverge, d. the wide ends of the two members being inwardly bent towards each other at approximately a 90* angle and having sharpened edges to define mating cutting edges to implement wire cutting, e. a plurality of mating, semi-circular cutouts provided at one end of the cutting edges to implement insulation stripping, f. a post rigidly secured to the interior side of one of the members near the cutting edge bend and extending through a hole in the other member, g. a generally rectangular lever plate having two bent fingers extending from one end thereof, h. means pivotally mounting the extended end of the post between the fingers, i. the opposite ends of the lever plate on either side of the fingers bent in a direction away from the fingers at an angle of approximately 90* and the width of the lever plate being greater than the width of the narrow ends of the members, and j. the bent sides of the lever plate providing spaced fulcrum corners which bear against the other member and urge the cutting edges together when the end of the lever plate opposite the fingers is pressed towards the said one of the members, whereby the spaced fulcrums provide a uniform force across the cutting edges regardless of where a wire to be stripped or cut is inserted.
Claim 2
Independent Claim 294 words
An apparatus for severing electric wires and for stripping insulation from such wires, comprising: a. a pair of flexible metal members each being relatively wide at one end and relatively narrow at the other, opposite end, b. means rigidly securing the narrow ends of the members together in a flat, overlying relationship, c. one of the members being bent intermediate its ends such that the wide ends of the two members diverge, d. the wide ends of the two members being inwardly bent towards each other at approximately a 90* angle and having sharpened edges to define mating cutting edges to implement wire cutting, e. a plurality of mating, semi-circular cutouts provided at one end of the cutting edges to implement insulation stripping, f. a post rigidly secured to the interior side of one of the members near the cutting edge bend and extending through a hole in the other member, g. a generally rectangular lever plate having two bent fingers extending from one end thereof, h. means pivotally mounting the extended end of the post between the fingers, i. the opposite ends of the lever plate on either side of the fingers bent in a direction away from the fingers at an angle of approximately 90* and the width of the lever plate being greater than the width of the narrow ends of the members, and j. the bent sides of the lever plate providing spaced fulcrum corners which bear against the other member and urge the cutting edges together when the end of the lever plate opposite the fingers is pressed towards the said one of the members, whereby the spaced fulcrums provide a uniform force across the cutting edges regardless of where a wire to be stripped or cut is inserted.

References Cited (Backward Citations)

US847980A Cited
US1131473A Cited
US1329226A Cited
US1349563A Cited
US1490459A Cited
US2279068A Cited
US2609716A Cited
US2894424A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-11-12 1977-05-14 1977-11-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-12 1981-05-14 1981-11-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-12 1985-05-14 1985-11-13 $7700.00 Window Closed / Lapsed

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