US4076364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wiring device
Assignee: ABB Installation Products Inc
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Filing: 1977-01-24
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Granted: 1978-02-28
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Expires: 1997-01-24
Abstract
Abstract A selectively deflectable tab hingedly coupled to the cover portion of a two part wiring device is positionally responsive to the presence or absence of an obstruction located within a cable receiving notched opening in the housing portion of the device so that, in the absence of such cable, the tab will enter the notched opening to provide a seal thereat but will selectively tilt away from the opening upon contact with an obstruction located therein.
Inventors
- 👤 Ted L. C. Kuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:06
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/081; H02G3/083; H01; H01R; H01R13/00; H01R13/46; H01R13/52; H01R13/5213; H01R13/502; H01R13/506
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
362 words
In an electrical wiring device of the type having, in combination, a housing portion have opposing end walls and opposing sidewalls arranged in a box-like configuration with an open top portion and wherein at least one of said end walls has a notched opening which communicates with said open top portion and has a channeled recess extending within each side edge defining said notched opening, and a generally flat cover portion arranged to fit over and seat upon said open top portion, the improvement comprising: a rigid tab member hingedly coupled to said cover portion by a thin compliant web portion, said tab member being located on said cover portion so as to be aligned with said notched opening in said housing portion when said cover portion is placed over said housing portion adjacent said open top portion in a preselected position, said tab member being pivotally displaceable about said web portion from a first position wherein said tab member is aligned with said notched opening to a second position wherein said tab member is tilted away from said notched opening, said tab member having a central longitudinal axis and being coupled to said cover member along a first axis offset from and parallel to said central longitudinal axis to cause said tab member to be subjected to a pivoting torque upon its contact with an obstruction located within said notched opening, said tab member including a locking shoulder extending outwardly from either side thereof adjacent said web portion and having a length substantially shorter than the length of said tab member, said locking shoulders being dimensioned to engage a respective channeled recess in said notched opening to provide a lock therebetween in the event no obstruction is present in said notched opening and said cover portion is in a substantially fully seated position over said open top portion of said housing portion, said tab member terminating in an extending free end portion opposite said web portion, said free end portion having a rounded edge to facilitate sliding engagement with an obstruction in said notched opening, said free end portion being located along said first axis in alignment with said web portion.
Claim 2
Dependent Claim
362 words
In an electrical wiring device of the type having, in combination, a housing portion have opposing end walls and opposing sidewalls arranged in a box-like configuration with an open top portion and wherein at least one of said end walls has a notched opening which communicates with said open top portion and has a channeled recess extending within each side edge defining said notched opening, and a generally flat cover portion arranged to fit over and seat upon said open top portion, the improvement comprising: a rigid tab member hingedly coupled to said cover portion by a thin compliant web portion, said tab member being located on said cover portion so as to be aligned with said notched opening in said housing portion when said cover portion is placed over said housing portion adjacent said open top portion in a preselected position, said tab member being pivotally displaceable about said web portion from a first position wherein said tab member is aligned with said notched opening to a second position wherein said tab member is tilted away from said notched opening, said tab member having a central longitudinal axis and being coupled to said cover member along a first axis offset from and parallel to said central longitudinal axis to cause said tab member to be subjected to a pivoting torque upon its contact with an obstruction located within said notched opening, said tab member including a locking shoulder extending outwardly from either side thereof adjacent said web portion and having a length substantially shorter than the length of said tab member, said locking shoulders being dimensioned to engage a respective channeled recess in said notched opening to provide a lock therebetween in the event no obstruction is present in said notched opening and said cover portion is in a substantially fully seated position over said open top portion of said housing portion, said tab member terminating in an extending free end portion opposite said web portion, said free end portion having a rounded edge to facilitate sliding engagement with an obstruction in said notched opening, said free end portion being located along said first axis in alignment with said web portion.
Claim 3
Dependent Claim
71 words
The improvement as defined in claim 1 wherein said tab member comprises a section of uniform thickness, said tab member having a thickened portion axially offset from and communicating with said free end portion along a tapered section, said central longitudinal axis passing through said thickened portion, said thickened portion being arranged to lie against an obstruction such as a cable in said notched opening to provide a strain relief thereat.
Claim 4
Dependent Claim
32 words
The improvement as defined in claim 2 wherein said thickened portion comprises a substantially planar outer surface for seating intimately against an obstruction such as a cable located in said notched opening.
Claim 5
Dependent Claim
18 words
The improvement as defined in claim 3 wherein said tab member is formed integrally with said web portion.
Claim 6
Dependent Claim
25 words
The improvement as defined in claim 1 wherein said tab locking shoulder has a length less than one half the length of said tab member.
References Cited (Backward Citations)
US3223776A
Cited
US3957336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |