GB660919A - Improvements in or relating to ducting for electric conductors - Google Patents
Improvements in or relating to ducting for electric conductorsInfo
- Publication number
- GB660919A GB660919A GB948449A GB948449A GB660919A GB 660919 A GB660919 A GB 660919A GB 948449 A GB948449 A GB 948449A GB 948449 A GB948449 A GB 948449A GB 660919 A GB660919 A GB 660919A
- Authority
- GB
- United Kingdom
- Prior art keywords
- base
- holes
- screws
- channel member
- lengths
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
- H02G3/0608—Joints for connecting non cylindrical conduits, e.g. channels
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Patch Boards (AREA)
Abstract
660,919. Conduits. PANEL FITTINGS CO., Ltd. April 11, 1950 [April 7, 1949; Feb. 27, 1950], Nos. 9484/49 and 4950/50. Class 36. Lengths of ducting for electric conductors are joined together by a channel-member which, together with a backing plate, is telescoped into adjacent ends of two duct lengths, separating screws being passed through tapped holes in the channel member to engage with the surface of the backing-plate so as to separate these two parts and obtain frictional engagement between the channel member and the duct lengths. The ducts are preferably of rectangular crosssection and comprise base 5, side walls 3, 4 and flanges 1, 2. The channel member comprises side walls 6, 7 and a base 8 having the same area as backing plate 9, which is placed under the base 8 so that tapped holes 10, 11 therein register with tapped holes 16, 17 in the plate 9. Additional tapped holes 13, 14 are provided in the base 8. The channel member and backing plate are positioned in the ends of adjacent ducts and screws are inserted in the holes. These through-holes 13, 14 separate the plate 9 from the base 8, forming a tight frictional engagement between the channel member and the duct lengths. The screws passing through holes 10, 16 and 11, 17 press into the base 5 of the ducts and make electrical contact between the parts. In an alternative arrangement (Fig. 5), four contact screws 24, 25 and four separating screws 28, 29 are provided, two of each lying on either side of the butt joint 26 between adjacent duct lengths. The channel members may be of L, T or other shape to join duct lengths which do not lie in a straight line. The open side of the duct may be closed by a cover member carrying spring-clips which engage under the flanges 1, 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB948449A GB660919A (en) | 1949-04-07 | 1949-04-07 | Improvements in or relating to ducting for electric conductors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB948449A GB660919A (en) | 1949-04-07 | 1949-04-07 | Improvements in or relating to ducting for electric conductors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB660919A true GB660919A (en) | 1951-11-14 |
Family
ID=9872847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB948449A Expired GB660919A (en) | 1949-04-07 | 1949-04-07 | Improvements in or relating to ducting for electric conductors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB660919A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2913513A (en) * | 1953-12-24 | 1959-11-17 | Westinghouse Electric Corp | Bus duct for electrical distribution systems |
US2937227A (en) * | 1957-06-14 | 1960-05-17 | Wiremold Co | Grounding clamp and connector for abutting wire ducts |
US3091657A (en) * | 1962-11-14 | 1963-05-28 | Flexiflor Electrical Systems I | Wiring ducts |
US3161722A (en) * | 1963-02-13 | 1964-12-15 | Otis Elevator Co | Ready access wiring duct |
US3351699A (en) * | 1965-03-19 | 1967-11-07 | Danzer Metal Works Co | Raceway for electrical cables and wires adapted to retain rf energy |
GB2315372A (en) * | 1996-07-16 | 1998-01-28 | Electrix | Trunking connection with internal fastenings |
EP1580857A1 (en) * | 2004-03-22 | 2005-09-28 | Legrand Electric Limited | Cable trunking and ducting |
-
1949
- 1949-04-07 GB GB948449A patent/GB660919A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2913513A (en) * | 1953-12-24 | 1959-11-17 | Westinghouse Electric Corp | Bus duct for electrical distribution systems |
US2937227A (en) * | 1957-06-14 | 1960-05-17 | Wiremold Co | Grounding clamp and connector for abutting wire ducts |
US3091657A (en) * | 1962-11-14 | 1963-05-28 | Flexiflor Electrical Systems I | Wiring ducts |
US3161722A (en) * | 1963-02-13 | 1964-12-15 | Otis Elevator Co | Ready access wiring duct |
US3351699A (en) * | 1965-03-19 | 1967-11-07 | Danzer Metal Works Co | Raceway for electrical cables and wires adapted to retain rf energy |
GB2315372A (en) * | 1996-07-16 | 1998-01-28 | Electrix | Trunking connection with internal fastenings |
GB2315372B (en) * | 1996-07-16 | 2000-08-30 | Electrix | Coupled connection for trunking and the like |
EP1580857A1 (en) * | 2004-03-22 | 2005-09-28 | Legrand Electric Limited | Cable trunking and ducting |
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