Patent US3787797A successfully refreshed from Google Patents.
US3787797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grounding connectors for shielded cable
Assignee: Individual
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Filing: 1972-12-29
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Granted: 1974-01-22
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Expires: 1992-12-29
Abstract
Abstract A grounding connector for shielded and insulation-sheathed cable includes upper and lower plates cylindrically curved about the axis of the cable. The lower plate is divided by an off-set into a contact portion that is slipped underneath the shield and bears against the bundle of cable conductors, and a clamp portion that is spaced out of potentially damaging contact with the cable wires. A stud projects from the clamp portion of the lower plate adjacent the off-set through the upper plate and bears a nut for drawing the plates toward each other. The clamp portion of the lower plate has an integral solderless connector for a grounding conductor, providing a solid metallic path from the shield to the grounding conductor. Differing from other connectors of this class, there is no tendency for stresses applied to the grounding conductor to loosen the disclosed connector. Special ridges are formed by grooves in the cylindrical outwardfacing surface of the contact portion, one side of each ridge being in a plane perpendicular to the cylindrical axis and the other surface of each ridge sloping from the bottom of the groove toward the stud. There is a narrow crest between each groove and the next. The ridges facilitate insertion of the contact portion of the lower plate inside the cable shield, and yet the ridges resist mechanical pull-out stresses and provide stable electrical contact to the inside surface of the shield without cutting the shield.
Inventors
- 👤 A Kurz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:32
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/58; H01R4/64; H01R4/646; H01R9/00; H01R9/03; H01R9/05; H01R9/0512; H01R9/0524
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
225 words
A grounding connector for shielded and insulation-sheathed cable, including elongated upper and lower plates, said upper plate having prominent cylindrical curvature about an axis parallel to tis length, said lower plate having a transverse offset dividing the lower plate into a sheath-contacting portion and a clamp portion, each of said portions having prominent cylindrical curvature about said axis, the radii of curvature of said upper plate, said clamp portion and said shield-contacting portion being successively smaller, a stud projecting radially outward from said clamp portion adjacent said off-set and a nut on the stud for drawing said plates toward each other, and a foot projecting between an end of said upper plate and said clamp portion of the loWer plate, said foot being integral with one of said plates and disposed for bearing against the other of said plates, so that when said contact portion is in position inside an end portion of the shield of a cable and said upper plate is tightened against an insulation sheath on the shield, the foot assures distributed clamping pressure of said plates against the insulation and the shield, and the grip of the shield and sheath by the contact portion and the upper plate supports the clamp portion of the lower plate in a position spaced from underlying portions of the cable projecting out of the shield.
Claim 2
Dependent Claim
225 words
A grounding connector for shielded and insulation-sheathed cable, including elongated upper and lower plates, said upper plate having prominent cylindrical curvature about an axis parallel to tis length, said lower plate having a transverse offset dividing the lower plate into a sheath-contacting portion and a clamp portion, each of said portions having prominent cylindrical curvature about said axis, the radii of curvature of said upper plate, said clamp portion and said shield-contacting portion being successively smaller, a stud projecting radially outward from said clamp portion adjacent said off-set and a nut on the stud for drawing said plates toward each other, and a foot projecting between an end of said upper plate and said clamp portion of the loWer plate, said foot being integral with one of said plates and disposed for bearing against the other of said plates, so that when said contact portion is in position inside an end portion of the shield of a cable and said upper plate is tightened against an insulation sheath on the shield, the foot assures distributed clamping pressure of said plates against the insulation and the shield, and the grip of the shield and sheath by the contact portion and the upper plate supports the clamp portion of the lower plate in a position spaced from underlying portions of the cable projecting out of the shield.
Claim 3
Dependent Claim
53 words
A grounding connector in accordance with claim 1, including a solderless connector integral with said lower plate at the end of said clamp portion remote from said off-set, whereby the tightness of the stud and nut is virtually unaffected by stress that may be imposed on a conductor united to said solderless connector.
Claim 4
Dependent Claim
89 words
A grounding connector in accordance with claim 1, wherein the convex outer surface of said contact portion of the lower plate has many transverse grooves forming narrow ridges, one lateral face of each ridge being substantially perpendicular to said axis and another lateral face of each of said ridges sloping generally away from said stud, for secure contact of the grounding connector with the shield despite possible stress tending to pull the contact portion out of said position gripping said shield and for easy insertion thereof under such shield.
Claim 5
Dependent Claim
36 words
A grounding connector in accordance with claim 3, wherein said upper plate has teeth projecting toward said contact portion and slanting toward said off-set for complementing said ridges in resisting pull-out stress on the grounding clamp.
Claim 6
Dependent Claim
43 words
A grounding connector in accordance with claim 3, including a solderless connector integral with the clamp portion of said lower plate for securing a grounding conductor to the grounding connector, said ridges resisting connector-shifting stresses that may be applied to the grounding conductor.
Claim 7
Dependent Claim
243 words
A grounding connector for shielded and insulation-sheathed cable, including elongated upper and lower plates having prominent cylindrical curvature about a common axis parallel to their lengths, said lower plate having a contact portion for insertion directly inside the cable shield for making secure electrical and mechanical contact with the shield and having a clamp portion that, in use, projects outside the shield, a stud projecting radially outward from said clamp portion adjacent said contact portion of the lower plate, a nut on the stud for drawing the plates toward each other, a foot projecting between an end of said upper plate and the clamp portion of the lower plate, said foot being integral with one of said plates and disposed to bear against the other of said plates so that when the contact portion is inside the cable shield and the upper plate is tightened against the sheath, said plates apply distributed pressure against the insulation sheath and the shield of the cable in the area of said contact portion, the convex outer surface of said contact portion of the lower plate having many transverse grooves forming smooth-crested ridges, one lateral face of each ridge being substantially perpendicular to said axis and another lateral face of each of said many ridges sloping generally away from said stud, for secure contact of the grounding clamp with the shield despite possible stress tending to pull the contact portion out of said position gripping said shield.
Claim 8
Dependent Claim
243 words
A grounding connector for shielded and insulation-sheathed cable, including elongated upper and lower plates having prominent cylindrical curvature about a common axis parallel to their lengths, said lower plate having a contact portion for insertion directly inside the cable shield for making secure electrical and mechanical contact with the shield and having a clamp portion that, in use, projects outside the shield, a stud projecting radially outward from said clamp portion adjacent said contact portion of the lower plate, a nut on the stud for drawing the plates toward each other, a foot projecting between an end of said upper plate and the clamp portion of the lower plate, said foot being integral with one of said plates and disposed to bear against the other of said plates so that when the contact portion is inside the cable shield and the upper plate is tightened against the sheath, said plates apply distributed pressure against the insulation sheath and the shield of the cable in the area of said contact portion, the convex outer surface of said contact portion of the lower plate having many transverse grooves forming smooth-crested ridges, one lateral face of each ridge being substantially perpendicular to said axis and another lateral face of each of said many ridges sloping generally away from said stud, for secure contact of the grounding clamp with the shield despite possible stress tending to pull the contact portion out of said position gripping said shield.
Claim 9
Dependent Claim
43 words
A grounding connector in accordance with claim 6, including a solderless connector integral with the clamp portion of said lower plate for securing a grounding conductor to the grounding connector, said ridges resisting connector-shifting stresses that may be applied to the grounding conductor.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |