Patent US4953293A successfully refreshed from Google Patents.
US4953293A
Expired / Lapsed
US
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Electrician's utility knife
Assignee: Individual
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Filing: 1989-05-19
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Granted: 1990-09-04
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Expires: 2009-05-19
Abstract
Abstract A utility knife for electricians has a handle member formed of two mating parts with a blade carrier therein that moves a blade in an out of a slot in an end wall. The handle member has an aperture in the end remote from the slot that has a slitting knife partially protruding therein for slitting "Romex" type cable. The handle also has a notch that partially intersects the blade for stripping insulation from a conductor. A hole is provided into which a bare conductor may be inserted and by bending the conductor, it may be formed into a curve for inserting the same under a screw terminal.
Inventors
- 👤 Dennis J. Sterlacci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:01
CPC Classifications
B; B26; B26B; B26B5/00; B26B5/001; B26B11/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
In a utility knife for electricians a handle having two members detachably secured together and separated along a central longitudinal plane, a slot at one end of the handle, a blade carrier adjacent said end of one of the members mounted for movement, a blade held by said carrier to leave the cutting edge unobstructed, that improvement comprising a notch in the handle adjacent the said end of a depth to allow the blade to protrude therein and permit insulation on a wire to be cut, an oblong aperture in each of the members that form a transverse passageway for receiving sheath covered parallel electric cable, a cutting blade partially protruding into the passageway centrally thereof and on a plane perpendicular to the longitudinal extent of said members for engaging the sheath of electrical cable.
Claim 2
Dependent Claim
135 words
In a utility knife for electricians a handle having two members detachably secured together and separated along a central longitudinal plane, a slot at one end of the handle, a blade carrier adjacent said end of one of the members mounted for movement, a blade held by said carrier to leave the cutting edge unobstructed, that improvement comprising a notch in the handle adjacent the said end of a depth to allow the blade to protrude therein and permit insulation on a wire to be cut, an oblong aperture in each of the members that form a transverse passageway for receiving sheath covered parallel electric cable, a cutting blade partially protruding into the passageway centrally thereof and on a plane perpendicular to the longitudinal extent of said members for engaging the sheath of electrical cable.
Claim 3
Dependent Claim
68 words
In a knife as in claim 1 wherein at least one of the members has rounded shoulder portions and a cavity is formed in the member at a location where the shoulder portions extend in an arcuate path therefrom, said cavity receiving bare wire the rounded shoulder portion providing a mandrel about which the wire may be bent into curved form to be accepted under a binding screw.
References Cited (Backward Citations)
US1994215A
Cited
US3257722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-03 | 1994-03-05 | 1994-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-03 | 1998-03-05 | 1998-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-03 | 2002-03-05 | 2002-09-04 | $7700.00 | Window Closed / Lapsed |