US4195401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductor unwrapping bit
Assignee: Cooper Industries LLC
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Filing: 1978-07-19
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Granted: 1980-04-01
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Expires: 1998-07-19
Abstract
Abstract An unwrapping bit for solderless wrapped connections of flexible conductor wire comprising a tubular member having a conical recess in one end face and a terminal receiving bore coaxial with the conical recess. Opposed longitudinal slots as well as transverse slots in the bit intersect the recess and form ledges for engaging the coiled end of a flexible conductor wire. The conical recess may have a reentrant shoulder portion adjacent the bit end face for retaining the conductor wire coils in the recess as they are unwound from the terminal.
Inventors
- 👤 Clifford L. Galloup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:41
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: 6
Claim 1
Independent Claim
150 words
A device for unwrapping a flexible conductor wire from a terminal pin wherein the conductor wire is wound on said terminal pin in a series of helical convolutions, said device comprising a rotatable bit characterized by: a shank portion having a transverse end face; a longitudinal terminal receiving bore in said bit opening to said end face; a generally conical shaped recess formed in said bit converging from said end face toward said bore and adapted to engage one or more convolutions of said conductor wire; at least one longitudinal slot formed by a pair of opposed surfaces each intersecting said recess; and, a substantially transverse slot intersecting said longitudinal slot and said recess and having a bottom wall forming a ledge for engaging the distal end of said conductor wire, so that upon rotation of said bit said helical convolutions are loosened from tight engagement with said terminal pin.
Claim 2
Independent Claim
150 words
A device for unwrapping a flexible conductor wire from a terminal pin wherein the conductor wire is wound on said terminal pin in a series of helical convolutions, said device comprising a rotatable bit characterized by: a shank portion having a transverse end face; a longitudinal terminal receiving bore in said bit opening to said end face; a generally conical shaped recess formed in said bit converging from said end face toward said bore and adapted to engage one or more convolutions of said conductor wire; at least one longitudinal slot formed by a pair of opposed surfaces each intersecting said recess; and, a substantially transverse slot intersecting said longitudinal slot and said recess and having a bottom wall forming a ledge for engaging the distal end of said conductor wire, so that upon rotation of said bit said helical convolutions are loosened from tight engagement with said terminal pin.
Claim 3
Dependent Claim
41 words
The invention set forth in claim 1 wherein: said slot intersects said recess in such a way as to form two opposed ledges for engaging said conductor wire, respectively, depending on which direction said conductor wire is wound on said terminal.
Claim 4
Independent Claim
132 words
A device for unwrapping a flexible conductor wire from a terminal pin wherein the conductor wire is wound on said terminal pin in a series of helical convolutions, said device comprising a rotatable bit characterized by: a shank portion having a transverse end face; a longitudinal terminal receiving bore in said bit opening to said end face; a generally conical shaped recess formed in said bit converging from said end face toward said bore and adapted to engage one or more convolutions of said conductor wire; and, means forming a transverse slot intersecting said recess in such a way as to form a ledge for engaging the distal end of said conductor wire so that upon rotation of said bit said helical convolutions are loosened from tight engagement with said terminal pin.
Claim 5
Independent Claim
132 words
A device for unwrapping a flexible conductor wire from a terminal pin wherein the conductor wire is wound on said terminal pin in a series of helical convolutions, said device comprising a rotatable bit characterized by: a shank portion having a transverse end face; a longitudinal terminal receiving bore in said bit opening to said end face; a generally conical shaped recess formed in said bit converging from said end face toward said bore and adapted to engage one or more convolutions of said conductor wire; and, means forming a transverse slot intersecting said recess in such a way as to form a ledge for engaging the distal end of said conductor wire so that upon rotation of said bit said helical convolutions are loosened from tight engagement with said terminal pin.
Claim 6
Dependent Claim
49 words
The invention set forth in claim 3, wherein: said slot includes a bottom wall intersecting said recess in such a way as to form two opposed ledges for engaging said distal end of said conductor wire, respectively, depending on which direction said conductor wire is wound on said terminal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |