Patent US4027557A successfully refreshed from Google Patents.
US4027557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripping device for wire, or the like
Assignee: Dr K Schleuniger & Co
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Filing: 1976-09-02
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Granted: 1977-06-07
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Expires: 1996-09-02
Abstract
Abstract A stripping device for wire, or the like: a spindle is freely rotatably mounted inside a housing; appropriate threaded connections between the spindle and the interior of the housing cause the spindle to rotate axially when the spindle is pulled; an insulating cutting knife is operatively connected with the spindle to rotate therewith; a passage leads past the cutting edge of the knife; the knife is pivotable out of the passage to permit the wire to be inserted into the passage and then the knife returns to the cutting position after insertion of the wire; pulling upon the wire pulls the spindle, causes the spindle to spin and rotates the knife around the insulation layer.
Inventors
- 👤 Jiri Stepan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:27
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/12; H02G1/1202; H02G1/1204; H02G1/1221; H02G1/1224
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
111 words
A stripping device for stripping insulating from wire, or the like purposes, said device comprising: a spindle housing; a spindle rotatable in and longitudinally movable through said housing; a stripping head secured to said spindle for moving therewith; a passage into said head for receiving the wire, or the like, to be stripped; a knife in said head positionable to intersect said passage, thereby to engage and cut any object in said passage; spindle support means in said housing for causing rotation of said spindle as it is moved longitudinally of said housing, thereby to rotate said spindle and said knife with respect to the wire, or the like, being stripped.
Claim 2
Dependent Claim
111 words
A stripping device for stripping insulating from wire, or the like purposes, said device comprising: a spindle housing; a spindle rotatable in and longitudinally movable through said housing; a stripping head secured to said spindle for moving therewith; a passage into said head for receiving the wire, or the like, to be stripped; a knife in said head positionable to intersect said passage, thereby to engage and cut any object in said passage; spindle support means in said housing for causing rotation of said spindle as it is moved longitudinally of said housing, thereby to rotate said spindle and said knife with respect to the wire, or the like, being stripped.
Claim 3
Dependent Claim
41 words
The stripping device of claim 1, wherein said spindle has an exterior and said housing has an interior spaced from said spindle exterior; said spindle support means comprises a ball bearing bushing interposed between said spindle exterior and said housing interior.
Claim 4
Dependent Claim
71 words
The stripping device of claim 2, further comprising said housing interior having a first helical guide groove formed therein and said spindle exterior having a second helical guide groove formed thereon; said ball bearing bushing including ball bearings which engage in both said helical guide grooves, whereby as said spindle shifts longitudinally with respect to said housing, said ball bearing bushing causes rotation of said spindle with respect to said housing.
Claim 5
Dependent Claim
16 words
The stripping device of claim 3, wherein said helical guide grooves are at different respective pitches.
Claim 6
Dependent Claim
30 words
The stripping device of claim 3, further comprising a spring attached between said housing and said spindle to return said spindle after it has moved with respect to said housing.
Claim 7
Dependent Claim
59 words
The stripping device of claim 1, wherein said spindle has an end located in said head; said passage having an entrance and said passage extending from said entrance to said spindle end; the position of said head on said spindle being adjustable along said spindle, thereby adjusting the length of said passage from said entrance to said spindle end.
Claim 8
Dependent Claim
44 words
The stripping device of claim 1, further comprising a pivot mount in said head for said knife, and said knife being pivotally mounted on its said pivot mount to pivot selectively from extending partially across said passage to being raised out of said passage.
Claim 9
Dependent Claim
30 words
The stripping device of claim 7, wherein said knife is pivotable away from said entrance, which raises said knife out of said passage as a wire enters said passage entrance.
Claim 10
Dependent Claim
19 words
The stripping device of claim 8, further comprising biasing means normally biasing said knife to pivot toward said entrance.
Claim 11
Dependent Claim
36 words
The stripping device of claim 9, further comprising a stop in said head positioned to engage said knife and to hold said knife at its closest position to said passage entrance and partially across said passage.
Claim 12
Dependent Claim
37 words
The stripping device of claim 1, further comprising knife positioning means for adjusting the position of said knife with respect to said passage for controlling the extent to which said knife extends into and across said passage.
Claim 13
Dependent Claim
42 words
The stripping device of claim 11, wherein said knife is supported on a frame in said head and said knife frame is movable toward and away from said passage, thereby adjusting the distance which said knife extends into and across said passage.
Claim 14
Dependent Claim
88 words
The stripping device of claim 12, further comprising a rotatable knife position adjustment means in said head and having a curved adjustment slot that is shaped to gradually move radially outwardly of said head along the curvature of said adjustment slot; said knife frame having a cam secured thereto and in engagement with said adjustment slot, whereby rotation of said knife position adjustment means and of its said slot with respect to said knife frame cam adjusts the position of said knife toward and away from said passage.
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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |