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US3777323A Expired / Lapsed US ⏱️ 0.0 years remaining

Hand tool for crimping, cutting and stripping

Assignee: Individual
•
Filing: 1971-08-24
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Granted: 1973-12-11
•
Expires: 1991-08-24
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Abstract

Abstract A hand tool for performing a variety of functions, such as terminal crimping, wire cutting, insulation stripping, etc., with regard to electrical connection terminal assemblies and the like. The tool comprises a pair of pivotal jaw members with circular crimping means in its nose portion and a guide means adjacent the ferrule crimping means. The tool also is provided with bolt and screw cutting means, including screw threaded work-holding apparatus and arcuate shears adapted to cut through the bolts or screws while they are held in the threaded holes. In addition, the tool is provided with a cam-like terminal lug crimping means for ignition cable and with a wire cut-off means whereby the cutoff blade has angular ends to provide space for squeezed out insulation that prevents cutting of conductor and insulation. The tool also has wire stripping apertures, and these, similarly to the bolt and screw work-holding apertures, are arranged so that the larger apertures are closer to the pivot point of the tool, whereby a greater mechanical advantage is utilized for the heavier work pieces.

Inventors

  • 👤 M Ingram

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 14:48
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/12; H02G1/1202; H02G1/1204; H02G1/1207; H02G1/1209; H02G1/1214; H01; H01R; H01R43/00; H01R43/04; H01R43/042

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 418 words
A tool comprising a pair of relatively flat jaw members pivotally connected to each other by a pivot means intermediate their ends, said jaw members being pivotally movable from an open position to a closed position, said jaw members forming a nose portion at one end and being integral at their opposite ends with respective flat stem portions, each stem portion having a handle portion at its free end, said jaw members having complementary recesses at their inner edges in the nose portion, said recesses forming ferrule crimping dies, each jaw member having a set of linearly arranged threaded apertures on the side of the pivot means opposite said ferrule crimping dies, the axes of said apertures being generally parallel to the axis of said pivot means, each set of apertures extending diagonally relative to said pivot means, the set of apertures in one jaw being on the opposite side of said pivot means from the set of apertures in the other jaw, each jaw having a shearing recess extending from the edge of the corresponding jaw toward said pivot means in corresponding position relative to the corresponding set of apertures in the other jaw, each shearing recess being defined by one straight edge and one shearing edge which is provided with at least one intermediate recess of a size and configuration partially corresponding to a respective intermediate aperture in the corresponding set of apertures in the other jaw, said edges defining an open end of the shearing recess at the edge of the corresponding jaw, which open end constitutes the outer end of said shearing recess, and also defining a closed inner end of said shearing recess, said inner end being adjacent said pivot means and being of configuration partially corresponding to the innermost aperture in the corresponding set of apertures in the other jaw, each shearing edge being movable, upon relative movement of said jaw members, to wipe over the corresponding set of apertures in the other jaw, wire cutting means on said tool, said wire cutting means comprising an anvil portion on the inner edge of one stem member and a blade portion on the inner edge of the other stem member, said anvil portion and blade portion being in opposed relationship, a terminal lug crimping means comprising opposed arcuate recesses on the inner edge of each stem portion, and a linear series of wire stripping holes, each hole being formed by complementary but opposed arcuate recesses on the inner edges of said stem portions.
Claim 2
Dependent Claim 418 words
A tool comprising a pair of relatively flat jaw members pivotally connected to each other by a pivot means intermediate their ends, said jaw members being pivotally movable from an open position to a closed position, said jaw members forming a nose portion at one end and being integral at their opposite ends with respective flat stem portions, each stem portion having a handle portion at its free end, said jaw members having complementary recesses at their inner edges in the nose portion, said recesses forming ferrule crimping dies, each jaw member having a set of linearly arranged threaded apertures on the side of the pivot means opposite said ferrule crimping dies, the axes of said apertures being generally parallel to the axis of said pivot means, each set of apertures extending diagonally relative to said pivot means, the set of apertures in one jaw being on the opposite side of said pivot means from the set of apertures in the other jaw, each jaw having a shearing recess extending from the edge of the corresponding jaw toward said pivot means in corresponding position relative to the corresponding set of apertures in the other jaw, each shearing recess being defined by one straight edge and one shearing edge which is provided with at least one intermediate recess of a size and configuration partially corresponding to a respective intermediate aperture in the corresponding set of apertures in the other jaw, said edges defining an open end of the shearing recess at the edge of the corresponding jaw, which open end constitutes the outer end of said shearing recess, and also defining a closed inner end of said shearing recess, said inner end being adjacent said pivot means and being of configuration partially corresponding to the innermost aperture in the corresponding set of apertures in the other jaw, each shearing edge being movable, upon relative movement of said jaw members, to wipe over the corresponding set of apertures in the other jaw, wire cutting means on said tool, said wire cutting means comprising an anvil portion on the inner edge of one stem member and a blade portion on the inner edge of the other stem member, said anvil portion and blade portion being in opposed relationship, a terminal lug crimping means comprising opposed arcuate recesses on the inner edge of each stem portion, and a linear series of wire stripping holes, each hole being formed by complementary but opposed arcuate recesses on the inner edges of said stem portions.
Claim 3
Dependent Claim 104 words
The tool of claim 1 wherein a guide member is positioned on one face of one of said jaw members in the nose portion adjacent said ferrule crimping dies, said guide member having a stationary leg portion connected to said one face and a transverse platform portion rigidly connected to and extending laterally from said one face adjacent said ferrule crimping dies, an enclosed slot between the stationary leg portion and the transverse platform portion, one edge of said slot defining a stop for a workpiece while said workpeice is held in one of the ferrule crimping dies and is supported on said platform.
Claim 4
Dependent Claim 28 words
The tool of claim 1 wherein the threaded apertures in each of said sets are progressively smaller in diameter as they are further distant from said pivot mEans.
Claim 5
Dependent Claim 19 words
The tool of claim 1 wherein the blade portion of said wire cutting means has outwardly-extending angular end portions.
Claim 6
Dependent Claim 56 words
The tool of claim 1 wherein one of the arcuate recesses of the terminal lug crimping means is of a shape conforming to the peripheral shape of a wire and other arcuate recess has a predetermined cam shape constructed and arranged to bend the open portion of a terminal lug into circular envelopement of said wire.
Claim 7
Dependent Claim 25 words
The tool of claim 1 wherein said wire stripping holes are of progressively smaller diameter as they are positioned further away from said pivot means.

References Cited (Backward Citations)

CA673358A Cited
US2359083A Cited
US2668464A Cited
US3525107A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-10 1977-06-11 1977-12-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-10 1981-06-11 1981-12-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-10 1985-06-11 1985-12-11 $7700.00 Window Closed / Lapsed

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