US3639677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical conduit coupling means
Assignee: Individual
•
Filing: 1970-09-24
•
Granted: 1972-02-01
•
Expires: 1990-09-24
Abstract
Abstract Coupling means for coupling a spirally wound flexible conduit to an electrical conduit or conduit box including a double-walled housing having projections thereon adapted to mate with the spirally wound surfaces of the flexible conduit and locking means for both further securing the flexible conduit within the walls of the housing and forming an electrical ground between the double-walled housing and the flexible conduit via the locking means.
Inventors
- 👤 Andrew Bain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:00
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
203 words
A coupling for an elongated hollow flexible conduit or the like, said conduit being spirally wound in a manner resulting in helically convoluted spirally wound inner and outer surfaces, said coupling comprising: a generally cylindrical elongated housing having a double-walled portion having a pair of spaced inner and outer cylindrical walls, the spacing between said walls forming a channel between said walls for receiving one end of said conduit therein; first projection means disposed about the outer periphery of said inner wall for engaging said inner spirally wound surface of said conduit; second projection means disposed about the inner periphery of said outer wall for engaging said outer spirally wound surface of said conduit; locking means extending through the outer wall of said doublewalled portion and adapted to engage said conduit for holding said conduit firmly within said channel, said locking means being adapted to simultaneously penetrate into said conduit a distance sufficient to form an electrical ground between said outer wall and said conduit via said locking means; and connecting means carried by said housing for connecting said housing to a second electrical conduit which is also spirally wound in a manner resulting in helically convoluted spirally wound inner and outer surfaces.
Claim 2
Dependent Claim
203 words
A coupling for an elongated hollow flexible conduit or the like, said conduit being spirally wound in a manner resulting in helically convoluted spirally wound inner and outer surfaces, said coupling comprising: a generally cylindrical elongated housing having a double-walled portion having a pair of spaced inner and outer cylindrical walls, the spacing between said walls forming a channel between said walls for receiving one end of said conduit therein; first projection means disposed about the outer periphery of said inner wall for engaging said inner spirally wound surface of said conduit; second projection means disposed about the inner periphery of said outer wall for engaging said outer spirally wound surface of said conduit; locking means extending through the outer wall of said doublewalled portion and adapted to engage said conduit for holding said conduit firmly within said channel, said locking means being adapted to simultaneously penetrate into said conduit a distance sufficient to form an electrical ground between said outer wall and said conduit via said locking means; and connecting means carried by said housing for connecting said housing to a second electrical conduit which is also spirally wound in a manner resulting in helically convoluted spirally wound inner and outer surfaces.
Claim 3
Dependent Claim
41 words
The coupling of claim 1 wherein said locking means includes a threaded aperture formed in said outer wall and opening into said channel and a locking screw adapted to be threaded in said aperture for biting engagement with said first-mentioned conduit.
Claim 4
Dependent Claim
26 words
The coupling of claim 2 wherein said aperture is disposed at an angle of approximately 45* with respect to the longitudinal axes of said outer wall.
Claim 5
Dependent Claim
183 words
The coupling of claim 1 wherein said connecting means includes a second double-walled portion having a pair of spaced inner and outer cylindrical walls, the spacing between said walls forming a second channel between the walls of said second double-walled portion for receiving one end of said second conduit; the inner wall of said second double-walled portion having third projection means disposed about its outer periphery for engaging the inner spirally wound surface of said second conduit; the outer wall of said second double-walled portion having fourth projection means disposed about its inner periphery for engaging the outer spirally wound surface of said second conduit; and second locking means extending through the outer wall of said second double-walled portion and adapted to engage said second conduit fOr holding said second conduit firmly within the channel formed between the walls of said second double-walled portion, said second locking means being adapted to simultaneously penetrate into said second conduit a distance sufficient to form an electrical ground between the outer wall of said second double-walled portion and said second conduit via said second locking means.
Claim 6
Dependent Claim
47 words
The coupling of claim 4 wherein said second locking means includes a threaded aperture formed in the outer wall of said second double-walled portion and opening into the channel formed between the walls of said second double-walled portion and a locking screw threaded into said last-mentioned aperture.
Claim 7
Dependent Claim
195 words
Apparatus for coupling a first elongated hollow flexible electrical conduit to a second elongated hollow flexible electrical conduit wherein said conduits are spirally wound in a manner resulting in helically convoluted inner and outer surfaces, said apparatus comprising: a generally cylindrical elongated housing having a double-walled portion having a pair of spaced inner and outer cylindrical walls, the space between said walls forming a channel between said walls for receiving one end of said first conduit therein; first projection means disposed about the outer periphery of said inner wall for engaging said inner spirally wound surface of said first conduit; second projection means disposed about the inner periphery of said outer wall for engaging said outer spirally wound surface of said first conduit; locking means extending through the outer wall of said double-walled portion and adapted to engage said second conduit, thereby holding said first conduit firmly within said channel, said locking means adapted to penetrate into said first conduit a distance sufficient to form an electrical ground between said outer wall and said first conduit via said locking means; connecting means carried by said housing for connecting said housing to said second electrical conduit.
Claim 8
Dependent Claim
195 words
Apparatus for coupling a first elongated hollow flexible electrical conduit to a second elongated hollow flexible electrical conduit wherein said conduits are spirally wound in a manner resulting in helically convoluted inner and outer surfaces, said apparatus comprising: a generally cylindrical elongated housing having a double-walled portion having a pair of spaced inner and outer cylindrical walls, the space between said walls forming a channel between said walls for receiving one end of said first conduit therein; first projection means disposed about the outer periphery of said inner wall for engaging said inner spirally wound surface of said first conduit; second projection means disposed about the inner periphery of said outer wall for engaging said outer spirally wound surface of said first conduit; locking means extending through the outer wall of said double-walled portion and adapted to engage said second conduit, thereby holding said first conduit firmly within said channel, said locking means adapted to penetrate into said first conduit a distance sufficient to form an electrical ground between said outer wall and said first conduit via said locking means; connecting means carried by said housing for connecting said housing to said second electrical conduit.
Claim 9
Dependent Claim
38 words
The apparatus of claim 6 wherein said locking means includes a threaded aperture formed in said outer wall and opening into said channel and a locking screw threaded in said aperture for biting engagement with said first conduit.
Claim 10
Dependent Claim
177 words
The coupling of claim 6 wherein said connecting means includes a second double-walled portion having a pair of spaced inner and outer cylindrical walls, the spacing between said walls forming a second channel between the walls of said second double-walled portion for receiving one end of said second conduit therein; the inner wall of said second double-walled portion having third projection means disposed about its outer periphery for engaging the inner surface of said second conduit; the outer wall of said second double-walled portion having fourth projection means disposed about its inner periphery for engaging the outer surface of said second conduit; and second locking means extending through the outer wall of said second double-walled portion adapted to engage said second conduit for holding said second conduit firmly within the channel formed between the walls of said second double-walled portion, said second locking means adapted to penetrate into said second conduit a distance sufficient to form an electrical ground between the outer wall of said second double-walled portion and said second conduit via said second locking means.
Claim 11
Dependent Claim
182 words
A coupling for an elongated hollow flexible conduit, said conduit being spirally wound in a manner resulting in helically convoluted innner and outer surfaces, said coupling comprising: a generally cylindrical elongated housing having a double-walled portion having a pair of spaced inner and outer cylindrical walls, the spacing between said walls forming a channel between said walls for receiving one end of said conduit therein; first projection means disposed about the outer periphery of said inner wall for engaging said inner spirally wound surface of said conduit; second projection means disposeD about the inner periphery of said outer wall for engaging said outer spirally wound surface of said conduit; locking means extending through the outer wall of said double-walled portion adapted to extend into engagement with said conduit for holding said conduit firmly within said channel, said locking means being adapted to simultaneously penetrate into said conduit a distance sufficient to form an electrical ground between said outer wall and said conduit via said locking means; and connecting means carried by said housing for connecting said housing to an electrical conduit box.
Claim 12
Dependent Claim
182 words
A coupling for an elongated hollow flexible conduit, said conduit being spirally wound in a manner resulting in helically convoluted innner and outer surfaces, said coupling comprising: a generally cylindrical elongated housing having a double-walled portion having a pair of spaced inner and outer cylindrical walls, the spacing between said walls forming a channel between said walls for receiving one end of said conduit therein; first projection means disposed about the outer periphery of said inner wall for engaging said inner spirally wound surface of said conduit; second projection means disposeD about the inner periphery of said outer wall for engaging said outer spirally wound surface of said conduit; locking means extending through the outer wall of said double-walled portion adapted to extend into engagement with said conduit for holding said conduit firmly within said channel, said locking means being adapted to simultaneously penetrate into said conduit a distance sufficient to form an electrical ground between said outer wall and said conduit via said locking means; and connecting means carried by said housing for connecting said housing to an electrical conduit box.
Claim 13
Dependent Claim
46 words
The coupling of claim 9 wherein said housing includes a substantially solid portion at one end and said double-walled portion at the other end; and said connecting means includes threaded means thereon adapted to be threaded into a mating threaded portion of said electrical conduit box.
Claim 14
Dependent Claim
183 words
Apparatus for coupling an elongated hollow flexible conduit to an electrical conduit box wherein flexible conduit is spirally wound in a manner resulting in helically convoluted inner and outer surfaces, said apparatus comprising: a generally cylindrical elongated housing having a double-walled portion having a pair of spaced inner and outer cylindrical walls, the spacing between said walls forming a channel between said walls for receiving one end of said conduit therein; first projection means disposed about the outer periphery of said inner wall for engaging said inner spirally wound surface of said conduit; second projection means disposed about the inner periphery of said outer wall for engaging said outer spirally wound surface of said conduit; locking means extending through the outer wall of said double-walled portion adapted to engage said conduit for holding said conduit firmly within said channel, said locking means adapted to penetrate into said conduit a distance sufficient to form an electrical ground between said outer wall and said conduit via said locking means; and connecting means carried by said housing for connecting said housing to said electrical conduit box.
Claim 15
Dependent Claim
183 words
Apparatus for coupling an elongated hollow flexible conduit to an electrical conduit box wherein flexible conduit is spirally wound in a manner resulting in helically convoluted inner and outer surfaces, said apparatus comprising: a generally cylindrical elongated housing having a double-walled portion having a pair of spaced inner and outer cylindrical walls, the spacing between said walls forming a channel between said walls for receiving one end of said conduit therein; first projection means disposed about the outer periphery of said inner wall for engaging said inner spirally wound surface of said conduit; second projection means disposed about the inner periphery of said outer wall for engaging said outer spirally wound surface of said conduit; locking means extending through the outer wall of said double-walled portion adapted to engage said conduit for holding said conduit firmly within said channel, said locking means adapted to penetrate into said conduit a distance sufficient to form an electrical ground between said outer wall and said conduit via said locking means; and connecting means carried by said housing for connecting said housing to said electrical conduit box.
Claim 16
Dependent Claim
45 words
The coupling of claim 11 wherein said housing includes a substantially solid portion at one end and said double-walled portion at the other end; and said connecting means includes threaded means adapted to be threaded into a mating threaded portion of said electrical outlet box.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |