US2805401A - Eta-plane hinge joint - Google Patents
Eta-plane hinge joint Download PDFInfo
- Publication number
- US2805401A US2805401A US394102A US39410253A US2805401A US 2805401 A US2805401 A US 2805401A US 394102 A US394102 A US 394102A US 39410253 A US39410253 A US 39410253A US 2805401 A US2805401 A US 2805401A
- Authority
- US
- United States
- Prior art keywords
- wave
- wave guide
- side plates
- guides
- jaws
- 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 - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/06—Movable joints, e.g. rotating joints
- H01P1/062—Movable joints, e.g. rotating joints the relative movement being a rotation
- H01P1/063—Movable joints, e.g. rotating joints the relative movement being a rotation with a limited angle of rotation
- H01P1/064—Movable joints, e.g. rotating joints the relative movement being a rotation with a limited angle of rotation the axis of rotation being perpendicular to the transmission path, e.g. hinge joint
Definitions
- This invention relates to Wave guide structures and more particularly to a magnetic or H-plane hinge joint for rectangular wave guides.
- Hinge joints are often employed in electronic systems involving wave guides to permit relative movement of one apparatus component with respect to another while permitting electrical interconnection between the components for the transmission of microwave energy. Perhaps the most important application of such hinge joints is found in radar and similar systems wherein an antenna arranged for scanning motion must be interconnected with a stationary microwave radio transmitter.
- a wave guide hinge joint in which two rectangular guides are provided for relative angular movement about an axis normal to an H-plane common thereto. Plates mounted on and spaced from the opposite wide sides of one guide are arranged for interleaving engagement with a pair of slotted jaws mounted on the opposite wide sides of the other guide. The plates and jaws respectively are overlapped sufficiently to cover the gap between the ends of the wave guides for a desired range of angular movement and are pinned together to permit such movement.
- the inner walls of the slots in the jaws on the second guide extend beyond the axis and into the space between the side plates and the first guide to form half-wave chokes extending across the opposite wide sides of the wave guides to provide wave continuity between the guide sections and prevent leakage from the joint.
- Fig. l is a perspective view of an H-plane hinge according to the invention, partially broken away to show certain details of the joint and with certain elements thereof shown in exploded form to facilitate understanding of the invention;
- paired jaws 14 best shown in Fig. 2 of the drawings are formed on the opposite wide sides of the second wave guide 12.
- paired side plates 16 shown in Fig. 2 of the drawings are mounted on and spaced from the wide sides of the first wave guide 10.
- the jaws 14 and side plates 16 are dimensioned for interleaving engagement, with the side plates 16 extending into slots defined by the jaws 14 and extensions 20 on the wide walls of wave guide 12 and extensions 20 projecting into the spaces between the side plates and the wide walls of wave guide 10.
- the ends of wave guides 10 and 12 are cut back symmetrically from the center of the wide walls toward the narrow walls to provide symmetrically beveled ends.
- the beveled ends provide clearance for relative angular movement of the two guides and result in the wide walls of the two guides being closely adjacent only at the center of the wide sides when the guides are in alinement. It is at these points of adjacency that the axis aa traverses the H- plane common to the two wave guide portions.
- the side plates 16 on wave guide 14 extend into a slot defined by the corresponding jaws 14 and outer wall extensions 24 of wave guide 12 and that similarly extensions 2% of wave guide 12 extend into the slot between the side plate 16 and the wider walls of wave guide 19.
- the jaws or side plates extend beyond the axis ml of the hinge sufiiciently to provide a cover for the gap between the adjacent ends of the wide walls of the wave guide for all possible relative angular positions of the guides.
- Trunnions 22 mounted on side plates 16 of wave guide 10 are journaled in ball bearings in jaws 14 of wave guide 12 to permit relative rotation of the two wave guides about axis aa'.
- These chokes are dimensioned for maximum efi'ectiveness at the center of the wide walls of the adjacent wave guides at which point the extensions 29 extend one-quarter wave length into the slots between the side plates 16 and the wave guide Walls, the slots extending one-half wave length in all from the points of nearest adjacency of the two wave guides to the short circuit terminations at the left hand ends of the slots.
- the reduction in efficiency caused by the movement of extensions 20 in the slots between the side plates and wave guide 10 is not significant in view of the fact that the high longitudinal current concentration in 'the wave guide is along the central portion of the Wide walls thereof. Regardless of the relativechoke structure which remains adjacent the gap between the guides at all times.
- the walls definingthe'se paths may be lined with a material such as polyiron which acts as-an absorber of the small amounts of radiofrequency energywhich may escape when the extremes ofangularmovement are reached.
- polyiron inserts 24 are mounted in the inner sides of side plate 16 and face extensions 20 of wave guide 12 as best shown in Figs. 1 and 2 of the drawings.
- cover plates 26 secured to the narrow faces of wave guide 10 and bent in an arc about axis an as a center to extend over the narrow faces of wave guide 12.
- cover plates of course also serve to protect the inner elements of the hinge joint and to prevent foreign bodies from becoming lodged inside the wave guide.
- Hinge joints according to the invention have been constructed for 1 /2 x 3 inch wave guide to permit relative movement of -13 degrees from the in-line position. Under test such joints have been found to have a standing wave ratio of about 7 db maximum across the 12 percent band'transmitted and have not been subject to arcing across the adjacent elements of the joint for transmitter powers up to one megawatt.
- a hinge joint connecting first and second Wave guides for relative angular movement about 'an axis normal to an H-plane common thereto comprising a pair of side plates mounted in spaced relation on and parallel to the two wide sides respectively of said first wave guide, said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the end thereof, extensions formed on said wide sides of said second wave guide and with said jaws definingslots parallel to said wide sides of said second wave guide and means pivoting said jaws and said side plates for relative rotation aboutsaid axis with said side plates received in said slots and said extensions received in the spaces be-' tween said side plates and the wide walls of said first wave guide.
- a hinge joint connecting first and second wave guides for relative angular movement about an axis normal to an pivoting said jaws and said side plates for relative rotation about said axis with said side plates received in said slots and said extensionsreceived in the spaces between said side plates and the wide walls of said first wave guide, and means associated with said joint for preventing the leakage of high frequency energy therefrom.
- a hinge joint connecting first and second wave guides for relative angular movement about an axis normal to an I-I-plane common thereto comprising a pair of side plates mountedin spaced relation on and parallel to the two wide sides respectively of said first wave guide, said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the end thereof, extensions formed on said wide sides of said second wave guide and with said jaws defining slots parallel to said wide sides of said secondvwave guide and means.
- said spaces being dimensioned with respect to the portions of the extensions projecting therein to constitute chokes extending across the wide dimension of said joint to provide Wave continuity between the guides and prevent leakage of high frequency energy therefrom.
- a hinge joint connecting first andsecond wave guides for relative angular movement about an axis normal to an H-plane common thereto comprising a pair of side plates mounted in spaced relation on and parallel to the two wide sides respectively of said first wave guide, said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the ends thereof, extensions formed on' said wide sides of said second wave guide and with said jaws defining slots parallel to said wide sides of said second wave guide, means pivoting said jaws and said side plates for relative rotation about said axis with said side plates received in said slots and said extensions received in the spaces between said'side plates and the .wide walls of said first wave guide, and inserts of radio frequency energy absorptive material mounted on the inner faces of said side plates and overlapping said extensions to minimize the escape of radio frequency from the joint.
- a hinge joint connecting first and second vwave guides for relative angular movement'about an axis normal to an H-plane common thereto comprising a pair of side plates mounted in spaced relation on and parallel to the two wide sides respectively of said first Wave guide,
- said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the ends thereof, extensions formed on said wide'sides of said second wave guide and with said jaws defining slots parallel to said wide sides of said second wave guides, means pivoting'said jaws and said side plates for relative rotation about said axis with said side plates re-' respect to the portions of the extensions projecting there in to constitute chokes extending across the wide dimension of said joint to provide wave continuity between the guides and prevent leakage of high frequency energy therefrom and polyiron slabs mounted on the inner faces of said side plates and overlapping said extensions to minimize the escape of radio frequency energy beyond said choke.
- a hinge joint connecting first and second wave guides for relative angular movement about an axis normal to an H-plane common thereto comprising a pair of side plates mounted in spaced relation on and parallel to the two wide sides respectively of said firstwave guide, said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the ends thereof, extensions formed on said widesides of said second wave guide and with said jaws defining slots parallel to said wide sides of said second wave guides, means pivoting said jaws andsaid side plates for relative rotation about said axis with said side plates received in said slots and said extensions received in the spaces between said'side plates and 'the Wide walls of said first wave guide, said spaces being dimensioned with respect to the portions of the extensions projecting therein to constitute chokes extending across the Wide dimension of said joint to provide Wave continuity between the guides and prevent leakage of high frequency energy therefrom, and arcuate covers mounted on the narrow faces of said first wave guide and extending beyond said axis to bridge the
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- Aerials With Secondary Devices (AREA)
Description
m 1957 J. c. CROWLEY 2,805,401
H-FLANE HINGE JOINT Shets-Sheet l Filed Nov. 24, 1 953 INVENTOR J. C. CROWLEY A TTORNEV Sept 3, 1957 J. c. CROWLEY 1 H-PLANE HINGE JOINT Filed Nov. 24, 1953 2 Sheets-Sheet 2 1 V 17W \W Y v INVENTOR J. C. CROWLEY A T'TORNEV H-PLANE HINGE JOINT Application November 24, 1953, Serial No. 394,102
6 Claims. (Cl. 333-98) This invention relates to Wave guide structures and more particularly to a magnetic or H-plane hinge joint for rectangular wave guides.
Hinge joints are often employed in electronic systems involving wave guides to permit relative movement of one apparatus component with respect to another while permitting electrical interconnection between the components for the transmission of microwave energy. Perhaps the most important application of such hinge joints is found in radar and similar systems wherein an antenna arranged for scanning motion must be interconnected with a stationary microwave radio transmitter.
In this and other applications the dual problem exists of on the one hand, providing adequate angular movement of one wave guide with respect to the other and on the other hand, preventing inefiicient transfer of microwave energy through the joint. These problems have been solved with greater or less success by numerous types of wave guide joints wherein limited relative motion is provided. In certain of these joints a choke is provided for the purpose of reducing leakage of energy from the joint. In general such chokes are satisfactory only when the wave guides are in alinernent. When in such structures the guides are relatively rotated about the hinge axis the dimensions of the choke vary and the choke is rendered substantially less efiective. Higher standing wave ratios and greater energy leakages result.
It is the object of the present invention to provide an H-plane hinge for rectangular wave guide structures capable of relatively large angular motion without lIltlOdllC-.
ing undesirable standing wave within the guides or leakage of the transmitted energy from the joint.
In accordance with the above object there is provided a wave guide hinge joint in which two rectangular guides are provided for relative angular movement about an axis normal to an H-plane common thereto. Plates mounted on and spaced from the opposite wide sides of one guide are arranged for interleaving engagement with a pair of slotted jaws mounted on the opposite wide sides of the other guide. The plates and jaws respectively are overlapped sufficiently to cover the gap between the ends of the wave guides for a desired range of angular movement and are pinned together to permit such movement. The inner walls of the slots in the jaws on the second guide extend beyond the axis and into the space between the side plates and the first guide to form half-wave chokes extending across the opposite wide sides of the wave guides to provide wave continuity between the guide sections and prevent leakage from the joint.
The above and other features of the invention will be described in the following detailed specification taken in connection with the drawings in which Fig. l is a perspective view of an H-plane hinge according to the invention, partially broken away to show certain details of the joint and with certain elements thereof shown in exploded form to facilitate understanding of the invention;
rates Patent Patented Sept. 3, 1957 movement about an axis aa' normal to an H-plane com-.
mon to the two wave guides. For this purpose paired jaws 14 best shown in Fig. 2 of the drawings are formed on the opposite wide sides of the second wave guide 12. Similarly paired side plates 16 shown in Fig. 2 of the drawings are mounted on and spaced from the wide sides of the first wave guide 10. The jaws 14 and side plates 16 are dimensioned for interleaving engagement, with the side plates 16 extending into slots defined by the jaws 14 and extensions 20 on the wide walls of wave guide 12 and extensions 20 projecting into the spaces between the side plates and the wide walls of wave guide 10.
As shown in Fig. 3 of the drawings, the ends of wave guides 10 and 12 are cut back symmetrically from the center of the wide walls toward the narrow walls to provide symmetrically beveled ends. The beveled ends provide clearance for relative angular movement of the two guides and result in the wide walls of the two guides being closely adjacent only at the center of the wide sides when the guides are in alinement. It is at these points of adjacency that the axis aa traverses the H- plane common to the two wave guide portions.
It will be noted from the drawings that the side plates 16 on wave guide 14 extend into a slot defined by the corresponding jaws 14 and outer wall extensions 24 of wave guide 12 and that similarly extensions 2% of wave guide 12 extend into the slot between the side plate 16 and the wider walls of wave guide 19. In each instance the jaws or side plates, as the case may be, extend beyond the axis ml of the hinge sufiiciently to provide a cover for the gap between the adjacent ends of the wide walls of the wave guide for all possible relative angular positions of the guides. Trunnions 22 mounted on side plates 16 of wave guide 10 are journaled in ball bearings in jaws 14 of wave guide 12 to permit relative rotation of the two wave guides about axis aa'.
From the foregoing it will be appreciated that while the wide sides of the adjacent wave guides may be separated by a considerable gap at the outer edges of the guide depending upon the-relative angular position of the two wave guides this gap is at all times covered by the extensions 20 on the wide walls of wave guide 12. Despite this arrangement, discontinuity occurs between adjacent wide walls of the two wave guides at the joint. Accordingly means have been provided for making the wave guide walls essentially electrically contiiuous thus preventing leakage of energy therefrom. To this end theslots formed by the side plates 16 and the wide walls of wave guide 10 are so dimensioned with pect to extensions 24 of wave guide 12 as to form rgnt half wave chokes at the mid-frequency of the band to be transmitted through the wave guide.
These chokes are dimensioned for maximum efi'ectiveness at the center of the wide walls of the adjacent wave guides at which point the extensions 29 extend one-quarter wave length into the slots between the side plates 16 and the wave guide Walls, the slots extending one-half wave length in all from the points of nearest adjacency of the two wave guides to the short circuit terminations at the left hand ends of the slots. The reduction in efficiency caused by the movement of extensions 20 in the slots between the side plates and wave guide 10 is not significant in view of the fact that the high longitudinal current concentration in 'the wave guide is along the central portion of the Wide walls thereof. Regardless of the relativechoke structure which remains adjacent the gap between the guides at all times.
As a further precaution and for e purpose of rnizing any escape of energy from the guide into the'surrounding area through the spaces-between side plates 16 and extensions 20 which constitute possible leakage paths beyond the chokes. The walls definingthe'se paths may be lined with a material such as polyiron which acts as-an absorber of the small amounts of radiofrequency energywhich may escape when the extremes ofangularmovement are reached. Conveniently and as shown in the drawing such polyiron inserts 24 are mounted in the inner sides of side plate 16 and face extensions 20 of wave guide 12 as best shown in Figs. 1 and 2 of the drawings.
Although little or no longitudinal current is transmitted along the narrow faces of wave guides 10 and 12, the gaps between these faces at the ends of the wave guides are closed by cover plates 26 secured to the narrow faces of wave guide 10 and bent in an arc about axis an as a center to extend over the narrow faces of wave guide 12. These cover plates of course also serve to protect the inner elements of the hinge joint and to prevent foreign bodies from becoming lodged inside the wave guide.
Hinge joints according to the invention have been constructed for 1 /2 x 3 inch wave guide to permit relative movement of -13 degrees from the in-line position. Under test such joints have been found to have a standing wave ratio of about 7 db maximum across the 12 percent band'transmitted and have not been subject to arcing across the adjacent elements of the joint for transmitter powers up to one megawatt.
What is claimed is:
l. A hinge joint connecting first and second Wave guides for relative angular movement about 'an axis normal to an H-plane common thereto comprising a pair of side plates mounted in spaced relation on and parallel to the two wide sides respectively of said first wave guide, said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the end thereof, extensions formed on said wide sides of said second wave guide and with said jaws definingslots parallel to said wide sides of said second wave guide and means pivoting said jaws and said side plates for relative rotation aboutsaid axis with said side plates received in said slots and said extensions received in the spaces be-' tween said side plates and the wide walls of said first wave guide.
2. A hinge joint connecting first and second wave guides for relative angular movement about an axis normal to an pivoting said jaws and said side plates for relative rotation about said axis with said side plates received in said slots and said extensionsreceived in the spaces between said side plates and the wide walls of said first wave guide, and means associated with said joint for preventing the leakage of high frequency energy therefrom.
3. A hinge joint connecting first and second wave guides for relative angular movement about an axis normal to an I-I-plane common thereto comprising a pair of side plates mountedin spaced relation on and parallel to the two wide sides respectively of said first wave guide, said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the end thereof, extensions formed on said wide sides of said second wave guide and with said jaws defining slots parallel to said wide sides of said secondvwave guide and means.
pivoting said jaws and said side plates for relative rotation about said axis with said side plates received in said.
slots and said extensions received in the spaces between said side plates and the wide walls of said first wave guide,
said spaces being dimensioned with respect to the portions of the extensions projecting therein to constitute chokes extending across the wide dimension of said joint to provide Wave continuity between the guides and prevent leakage of high frequency energy therefrom.
4. A hinge joint connecting first andsecond wave guides for relative angular movement about an axis normal to an H-plane common thereto comprising a pair of side plates mounted in spaced relation on and parallel to the two wide sides respectively of said first wave guide, said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the ends thereof, extensions formed on' said wide sides of said second wave guide and with said jaws defining slots parallel to said wide sides of said second wave guide, means pivoting said jaws and said side plates for relative rotation about said axis with said side plates received in said slots and said extensions received in the spaces between said'side plates and the .wide walls of said first wave guide, and inserts of radio frequency energy absorptive material mounted on the inner faces of said side plates and overlapping said extensions to minimize the escape of radio frequency from the joint.
5. A hinge joint connecting first and second vwave guides for relative angular movement'about an axis normal to an H-plane common thereto comprising a pair of side plates mounted in spaced relation on and parallel to the two wide sides respectively of said first Wave guide,
said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the ends thereof, extensions formed on said wide'sides of said second wave guide and with said jaws defining slots parallel to said wide sides of said second wave guides, means pivoting'said jaws and said side plates for relative rotation about said axis with said side plates re-' respect to the portions of the extensions projecting there in to constitute chokes extending across the wide dimension of said joint to provide wave continuity between the guides and prevent leakage of high frequency energy therefrom and polyiron slabs mounted on the inner faces of said side plates and overlapping said extensions to minimize the escape of radio frequency energy beyond said choke.
6. A hinge joint connecting first and second wave guides for relative angular movement about an axis normal to an H-plane common thereto comprising a pair of side plates mounted in spaced relation on and parallel to the two wide sides respectively of said firstwave guide, said side plates extending beyond the ends of said first wave guide, a pair of jaws mounted on the opposite wide sides of said second wave guide and extending beyond the ends thereof, extensions formed on said widesides of said second wave guide and with said jaws defining slots parallel to said wide sides of said second wave guides, means pivoting said jaws andsaid side plates for relative rotation about said axis with said side plates received in said slots and said extensions received in the spaces between said'side plates and 'the Wide walls of said first wave guide, said spaces being dimensioned with respect to the portions of the extensions projecting therein to constitute chokes extending across the Wide dimension of said joint to provide Wave continuity between the guides and prevent leakage of high frequency energy therefrom, and arcuate covers mounted on the narrow faces of said first wave guide and extending beyond said axis to bridge the gap between the narrow faces of said first and second Wave guides for all positions of relative angular movement thereof.
References Cited in the file of this patent UNITED STATES PATENTS Aron et a1. Mar. 1, 1949 Kirkpatrick et a1. Mar. 24, 1953 FOREIGN PATENTS Germany Feb. 9, 1940 Great Britain May 14, 1947
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US394102A US2805401A (en) | 1953-11-24 | 1953-11-24 | Eta-plane hinge joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US394102A US2805401A (en) | 1953-11-24 | 1953-11-24 | Eta-plane hinge joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2805401A true US2805401A (en) | 1957-09-03 |
Family
ID=23557560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US394102A Expired - Lifetime US2805401A (en) | 1953-11-24 | 1953-11-24 | Eta-plane hinge joint |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2805401A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480859A (en) * | 1982-06-28 | 1984-11-06 | W. R. Grace & Co. | Flexible connector for flat wall ducting |
| US4647884A (en) * | 1985-02-08 | 1987-03-03 | Hughes Aircraft Company | Controlled travel articulated linkage for waveguide and cabling support |
| US6585195B2 (en) * | 2001-04-25 | 2003-07-01 | Adc Telecommunications, Inc. | Cable management system including variable segments |
| US6609684B2 (en) | 2001-07-20 | 2003-08-26 | Adc Telecommunications, Inc. | Flexible snap-together cable trough |
| US6739795B1 (en) | 2000-05-25 | 2004-05-25 | Adc Telecommunications, Inc. | Telescoping trough |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE687978C (en) * | 1930-11-18 | 1940-02-09 | Siemens Reiniger Werke Akt Ges | very high frequency vibrations |
| GB588122A (en) * | 1945-01-30 | 1947-05-14 | George Edward Bacon | Improvements in or relating to electromagnetic wave guides |
| US2463347A (en) * | 1946-05-08 | 1949-03-01 | Aron Walter | Adjustable wave guide joint |
| US2632807A (en) * | 1945-09-18 | 1953-03-24 | Harry A Kirkpatrick | Wave guide joint |
-
1953
- 1953-11-24 US US394102A patent/US2805401A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE687978C (en) * | 1930-11-18 | 1940-02-09 | Siemens Reiniger Werke Akt Ges | very high frequency vibrations |
| GB588122A (en) * | 1945-01-30 | 1947-05-14 | George Edward Bacon | Improvements in or relating to electromagnetic wave guides |
| US2632807A (en) * | 1945-09-18 | 1953-03-24 | Harry A Kirkpatrick | Wave guide joint |
| US2463347A (en) * | 1946-05-08 | 1949-03-01 | Aron Walter | Adjustable wave guide joint |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480859A (en) * | 1982-06-28 | 1984-11-06 | W. R. Grace & Co. | Flexible connector for flat wall ducting |
| US4647884A (en) * | 1985-02-08 | 1987-03-03 | Hughes Aircraft Company | Controlled travel articulated linkage for waveguide and cabling support |
| US6739795B1 (en) | 2000-05-25 | 2004-05-25 | Adc Telecommunications, Inc. | Telescoping trough |
| US20040104313A1 (en) * | 2000-05-25 | 2004-06-03 | Adc Telecommunications, Inc. | Telescoping trough |
| US7383634B2 (en) | 2000-05-25 | 2008-06-10 | Adc Telecommunications, Inc. | Method of assembling a cable routing system |
| US6585195B2 (en) * | 2001-04-25 | 2003-07-01 | Adc Telecommunications, Inc. | Cable management system including variable segments |
| US6609684B2 (en) | 2001-07-20 | 2003-08-26 | Adc Telecommunications, Inc. | Flexible snap-together cable trough |
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