US3871078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire insulation stripper
Assignee: Individual
•
Filing: 1973-03-12
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Granted: 1975-03-18
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Expires: 1993-03-12
Abstract
Abstract A wire insulation stripper hand tool has first and second opposed scissors-connected elements. The jaws are beveled outward and rearward, forming knife-like edges which slightly overlap. Complementary recesses in the jaws form a plurality of circles and an elongated curved-end opening when the jaws are overlapped. The recesses have beveled and sharpened edges similar to the remainder of the jaws. The outermost opening has straight walls and is used for gripping and bending. Tips of the jaws are ground rearward from a line extended along the knife edges, and the tips are bent inward to form abutments to prevent excessive overlapping travel of the jaws and to maintain the complementary recessed openings at desired sizes. Straight walled holes in the jaws remote from the edges are used for gripping and bending wires. Handles are curved outward from the hinge pin and then are curved inward and then outward to facilitate gripping and to prevent slipping in the palm of a hand.
Inventors
- 👤 Robert Ogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:41
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/12; H02G1/1202; H02G1/1204; H02G1/1207; H02G1/1209; H02G1/1214; B; B25; B25B; B25B7/00; B25B7/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
185 words
A wire stripper hand tool apparatus comprising a first integrally connected flat jaw and handle element and a second integrally connected flat jaw and handle element of substantially uniform thickness and pin means joining the two elements at complementary points between the jaw and handles in a scissorslike arrangement, the jaws closely overlapping in side-by-side arrangement as in the form of scissors, each Jaw having an inward facing and complementary elongated concave depression with curved ends and a straight central portion in opposed surfaces of the jaw, and the jaw further having paired opposed semicircular complementary depressions, at least one of the jaws has a sloping surface extending outward from the elongated depressions and the semi-circular depressions, thereby forming sharp edges at the elongated concave depression and the semicircular depressions, and further comprising complementary oppositely inward bent abutment means on the jaws remote from the pin means for preventing overtravel of the jaws when overlapping, thereby preventing closing of the openings in the jaws, whereby the jaws cut and strip an outer sheath and subsequently cut and strip paired insulated wires within the sheath simultaneously.
Claim 2
Dependent Claim
185 words
A wire stripper hand tool apparatus comprising a first integrally connected flat jaw and handle element and a second integrally connected flat jaw and handle element of substantially uniform thickness and pin means joining the two elements at complementary points between the jaw and handles in a scissorslike arrangement, the jaws closely overlapping in side-by-side arrangement as in the form of scissors, each Jaw having an inward facing and complementary elongated concave depression with curved ends and a straight central portion in opposed surfaces of the jaw, and the jaw further having paired opposed semicircular complementary depressions, at least one of the jaws has a sloping surface extending outward from the elongated depressions and the semi-circular depressions, thereby forming sharp edges at the elongated concave depression and the semicircular depressions, and further comprising complementary oppositely inward bent abutment means on the jaws remote from the pin means for preventing overtravel of the jaws when overlapping, thereby preventing closing of the openings in the jaws, whereby the jaws cut and strip an outer sheath and subsequently cut and strip paired insulated wires within the sheath simultaneously.
Claim 3
Dependent Claim
35 words
The stripper apparatus of claim 1 wherein at least one of the jaws further comprises a diagonally sloped surface extending away from a mating edge portion of the jaw, thereby forming an elongated cutting surface.
Claim 4
Dependent Claim
22 words
The apparatus of claim 1 further comprising additional semicircular concave openings at opposed edge surfaces of the jaws with substantially flat surfaces.
Claim 5
Dependent Claim
24 words
The apparatus of claim 1 further comprising a circular hole through at least one of the jaws remote from mating surfaces of the jaws.
Claim 6
Dependent Claim
39 words
The stripper hand tool apparatus of claim 1 wherein the entire overlapping surfaces of the jaws and concave surfaces leading away from the openings are beveled in directions outward and rearward, thereby forming sharp overlapping edges for cutting purposes.
Claim 7
Dependent Claim
103 words
The insulator stripping and cutting hand tool of claim 1 wherein the integral handles and cutting and stripping blade-like jaws are similarly formed and are reversed and joined in back-to-back positions by the pin means, the handles curving outward and then inward and then outward in directions away from the pin means for creating a comfortable positive grip which resists slipping in the hand in any direction, and the blade-like jaw means comprising flat, partially overlapping adjacent surfaces which are uniformly beveled in directions away from each other and rearward with respect to touching edges of the jaws, thereby providing sharp cutting edges.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |