US2513067A - Device for interconnecting wave guides - Google Patents

Description

June 27, 1950 1. STEPHAN 2,513,067

Filed April 28, 1944 IN VEN TOR.

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Patented June 27, 1950 r 2,513,067" DEVICE FORINTERCONNECTIN-GWAVE UIDES lingo Stephan; Delanco, *N. -J'., assignor, by -,mes,ne assignments, to Philco. Corporation, Philadlelphia, Pa., a corporation of-,Pennsyl vania. I

zpplication -April 28, 1944, Serial No. 5333185 The present invention relates. to devices-for: flexibly interconnecting rigid wave guidesections.

In ultra high frequency apparatus it is necessary to provide for limited longitudinal and axial movement of wave guide sections relative to each therand;bere of r su m e e a been ranged by using flexible wave guide sections which involved sliding contacts which however deteriorated with age and introduced undesirable leakage. It,- therefore, would be desirable to provide a different form of connection between wave guide sections-which will obviate the objections to the'devices in the prior'art. I

It, therefore, is an objectof the present inventionto provide an improved device for flexibly interconnecting rigid wave guide sections.

Still another objeotof the--present invention is to provide an improvedconnection for flexibly interconnecting rigid wave guide-sections which is relatively simple to construct and which does not deteriorate with age.

Otherand further-objects of the present invention subsequently will become apparent by reference to the following description taken in connection with the accompanying drawing wherein Figure 1 is a cross sectional representation of, a device embodying the present invention for interconnecting rigid wave guide sections; and

Figure 2 is a-view in the direction of the arrows along the line 22 of Figure 1.

In the drawing there are shown two wave guide sections II and I2 of the rectangular wave guide type having similar cross sections. The wave guide section II has mounted adjacent its end a connecting member l3 having a rectangular opening I4 for receiving the rectangular wave guide I l and has a generally circular or cylindrical outer periphery I5. At the intermediate portion of the member l3 the outer diameter is considerably less than the diameter of the portion IS. A reduced diameter portion I6 is provided at an intermediate point adjacent another portion I! having a slightly greater diameter so as to provide an annular stepped configuration.

The wave guide [2 is similarly mounted in a rectangular opening I8 in a connecting member l9 having a generally circular or cylindrical outer configuration and surface 2 I. Two reduced diameter portions 22 and 23 are provided so as to form a, stepped annular configuration similar to the configuration provided on the other coupling member I3. In addition the device [9 is provided with an annular recess 24 of such dimensions as to form with the space 25 between the ends of the wave guides II and I2 and the inner end portions 4 Claims. (Cl.-17-8 -44) of the members [ii-and I 9 a high frequency choke for the energy-being transmitted-by the wave guides. The space 25 between the Wave guides H and; 122 forming-a portionof the choke is -delineated by a generall cylindrical wall surface form'edbya plurality of link membersiii. The link members 26 have straight edged bottom portions 21 and depending-end portions 28- toengagethe reduced di arneter portions Iii, ll; 22,- and 'zt 1 of the members-l3 and l3. Eachof the'members 26 is provided with an aperture-30'- wherein ispositioned. a resilient retaining member or coil spring 29'. The li-nlrmembers 26- retained' in position by the coils spri-ng 29-therefore= form agen-- erally cylindrical wall surface-interconnectingthe circular membersl3 and 19 in: a mannerwhich will permit limitedlongitudina-I and angular movement-betweenthe wave guide sections I l and I2. In permitting-relative longitudinal and. angular movement between the wave guidesections- I and. [2,- it necessary to prevent angular rotation of one wave guide relative to the other.- This may be accomplished; by providinga resilient or elastic covering-*3lwhi'ch engages the outer pee ripheral portions wand 2 1 of the-membersi3 and 'I 9 and which is retained positionthereon 'bya plurality of clam-ping members-t2= and 3-3.

The member 3 I may be a portion of a rubber hose held in position by the clamping rings13'2- and--33- so as =to--restra-in any rotational movementor one wave guide relative to the other and yetpermi-t angular displacement of the axis of one wave guide relative to the other. The rubber hose covering of the coupling member 3| also serves as an air tight shield for the entire flexible joint. The members I3 and H! are secured to the wave guides I l and I2 in a permanent manner so as to insure positive conductive connection therebetween, and the annular recess together with the space 25 operates as a choke at the frequencies being transmitted. The contacts between the individual link members 25 and the contacting surfaces engaged on the members [3 and 2|, are good conductive contacts because of the action of the resilient retaining spring member 29. Furthermore deterioration of the contact surfaces is minimized by the air tight enclosure'provided by the hose covering 3|. It therefore will be appreciated that there has been provided an improved flexible joint for interconnecting rectangular wave guides which obviates the disadvantages heretofore found in the devices commonly used.

While for the purpose of illustrating and describing the present invention, a certain specific embodiment has been shown in the drawing, it is 2,613,067 all .1131

said members, and a resilient cover member engaging said members and surrounding said band.

4. A structure for joining two longitudinally spaced wave guides formed of conductive material and adapted for the propagation of ultra high frequency electromagnetic wave energy, said structure comprising: a pair of members, one of said members being adapted for connection to .one of said wave guides, the other of said memtherein, said device comprising two spaced-apart members each adapted to be rigidly secured to a Wave guide section, said members having a .rec.-'

tangular opening for said wave guide section and a circular outer configuration, a plurality of linkbridging members each extending from one of said circular members to the other, said link members forming a generally cylindrical wall sur F face and interconnecting said circular members to permit limited longitudinal and angular movement between said guide sections, and resilient means for retaining said link bridging members in position.

2. A flexible joint for rectangular wave guides formed of conductive material and adapted to convey ultra high frequency electromagnetic wave energytherein, said joint comprising two spaced apart members each adapted to be secured to a wave guide, said members each having arectangular opening for said wave guides and a cylindrical outer surface portion, a plurality of link bridging members engaging the adjacent portions of said spaced members and forming a generally cylindrical wall surface, encircling the space between the adjacent faces of said spaced members, said link bridging members permitting limited longitudinal and angular movement between said wave guides, and resilient means interconnecting said circular outer surface portions of said spaced members to enclose said joint and to restrain rotary movement of one guide relative to the other. Y

3. -A wave guide joint structure for interconnecting wave guides formed of conductive material and adapted to convey ultra high frequency electromagnetic wave energy therein, said joint structure comprising a pair of spaced members adapted to be connected to wave guides to be joined, an articulated band encircling and engaging the adjacent portions of said members, and forming a surface enclosing the space between bers being adapted for connection to the other of said wave guides and each of said members having a circumferentially channeled outer configuration; a plurality ofU-shaped links, their side arms engaging the channels in both said members, and their cross arms extending between said channels to form longitudinal bridging connections therebetween, said links being disposed in circumferential adjacency along the outer faces of said members; and resilient means circumferentially interconnecting said links and tending to maintain said links in thestated' circumferential adjacency. 1

REFERENCES crrnn 1 1 The following references are of record in -the file of this patent:

UNITED STATES, PATENTS OTHER REFERENCES Practical Analysis of Ultra High Frequency, copyrighted 1943 by RCA Service 00., Camden, New Jersey, page 16, column 2. (Copy in Division 65.)

INGO L. STEPHAN;

I Meier Mar.v 15, 19 49

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