US4444228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire unwrapping tool
Assignee: Individual
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Filing: 1982-07-16
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Granted: 1984-04-24
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Expires: 2002-07-16
Abstract
Abstract A wire unwrapping tool comprising a cylindrical shaft having an outer axial bore at one end, and an inner bore further within said shaft, concentric with and opening to said outer bore. A third bore is located through a diameter of the tubular shaft in such a position as to define sharp gripping edges at the inner face of said outer bore, for grasping the conductor wire to be unwrapped when the shaft is placed over the wrapped terminal. In a further embodiment, the shaft includes axial gripping edges extending from the end of the shaft to the diametrical bore.
Inventors
- 👤 John Demirjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:02
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/033; H01R43/0335; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53274; Y10T29/53283
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
An unwrapping tool for unwrapping and removing a wire from a terminal pin upon which it is wrapped, comprising: a cylindrical shaft; said shaft having an axial outer bore extending from a first end of said shaft to a substantially planar inner face of said outer bore, for receipt of the wrapped wire when the shaft is placed over the terminal pin; said shaft having an axial inner bore concentric with said axial outer bore and extending axially inward from said inner face of said axial outer bore, for receipt of said terminal pin when the shaft is placed over the terminal pin; said shaft having a diametrical bore whose axis is perpendicular to and intersects the axis of said inner bore, said diametrical bore being located at a longitudinal axial position along such shaft such that a portion of said diametrical bore intersects said inner face of said axial outer bore in such a way as to form gripping means for gripping the wrapped wire when the tool is placed over the terminal pin.
Claim 2
Dependent Claim
175 words
An unwrapping tool for unwrapping and removing a wire from a terminal pin upon which it is wrapped, comprising: a cylindrical shaft; said shaft having an axial outer bore extending from a first end of said shaft to a substantially planar inner face of said outer bore, for receipt of the wrapped wire when the shaft is placed over the terminal pin; said shaft having an axial inner bore concentric with said axial outer bore and extending axially inward from said inner face of said axial outer bore, for receipt of said terminal pin when the shaft is placed over the terminal pin; said shaft having a diametrical bore whose axis is perpendicular to and intersects the axis of said inner bore, said diametrical bore being located at a longitudinal axial position along such shaft such that a portion of said diametrical bore intersects said inner face of said axial outer bore in such a way as to form gripping means for gripping the wrapped wire when the tool is placed over the terminal pin.
Claim 3
Dependent Claim
45 words
The tool of claim 1 wherein said portion of said diametrical bore intersects said axial inner bore and said inner face in such a way as to form guide means adjacent to said gripping means for guiding said terminal pin into said axial inner bore.
Claim 4
Dependent Claim
48 words
The tool of claim 2 wherein the intersection of a circular section of said diametrical bore with the plane of said inner face of said outer bore comprises a chord of said circular section, said chord being of a length less than the diameter of said inner bore.
Claim 5
Dependent Claim
53 words
The tool of claim 1, further comprising axial gripping means located on the circumference of said axial outer bore and extending parallel to the axis of said shaft from said first end of said shaft to said diametrical bore, for gripping the wrapped wire when the tool is placed over the terminal pin.
Claim 6
Dependent Claim
53 words
The tool of claim 2, further comprising axial gripping means located on the circumference of said axial outer bore and extending parallel to the axis of said shaft from said first end of said shaft to said diametrical bore, for gripping the wrapped wire when the tool is placed over the terminal pin.
Claim 7
Dependent Claim
53 words
The tool of claim 3, further comprising axial gripping means located on the circumference of said axial outer bore and extending parallel to the axis of said shaft from said first end of said shaft to said diametrical bore, for gripping the wrapped wire when the tool is placed over the terminal pin.
Claim 8
Dependent Claim
23 words
The tool of claim 4, wherein the distance between said axial gripping edges is greater than the diameter of said axial inner bore.
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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |