SeptrIO, 1946.. . ' J. JANDASIEK ' FLUID ' 2,407,496‘ TRANSMISSION ' Filed June 28, 1945 M ' 2 Sheets-Sheet 1' _ 12 a Z63. ‘. 45' /8 \1/7 R’ 32 8: BY ' Sept. 10,1946. 'J.‘ JANDASEK 2,4o7,49e . FLUID TRANSMISSION F‘iled June 28, 1943 2 Sheets-Sheet 2_ ‘ .?. g \ L)? ‘Il J 14 :1. ' 1; . Q 4/43 44 47 1,3 4; 47 “E 46 ' K I JZJe/Z BY 46 INVENTOR. I I 2,407,496 Patented Sept. 10, 1946 UNITED STATES PATENT OFFICE. 2,407,496 FLUID TRANSMISSION ‘Joseph Jandasek, Highland Park, Mich., assignor to Bendix Aviation Corporation, South Bend, Ind., a corporation of Delaware . Application June 28, 1943, Serial No. 492,537 7 Claims‘. (CI. 60-54) 1 2 This invention relates to transmissions and more particularly to ?uid transmissions wherein circulation of the power transmitting ?uid is ef fective to cool the ?uid. ' Heretofore in the ?uid transmission art con siderable di?iculty has been encountered because of excessive heating of the power transmitting ?uid. Radiators and other external cooling means have been provided in an effort to main-v tain the ?uid at a desired temperature; These attempts have fora large part been unsatisfac tory because of complications resulting from the positioning of the necessary cooling means, and the fact that considerable loss of ef?ciency re ' 7 ing to substantially close the space between th heat radiating chamber and the interior of the housing to provide a cooling space between a smooth surface on the inside and a corrugated > cooling surface on the outside. Other objects and advantages of this‘ invention will be apparent from the following detailed de scription considered in connection with the ac companying drawings, submitted for purposes of illustration only, and not intended to de?ne the scope of the invention, reference being had for that purpose to the subjoined claims. ' ‘ ' In the drawings wherein similar reference char acters refer to similar parts throughout the sev ' ' 1 sults from directing the power transmitting ?uid 15. eral views: Fig. 1 is a longitudinal sectional View of a ?uid through the radiator or other cooling medium. transmission embodying the present invention. An object of this invention is therefore to pro Fig. 2 is a sectional View taken substantially on vide a fluid transmission wherein circulation of the line 2--2 of Fig. 1 looking in the direction of the power'transmitting ?uid is effective to sub ' ject the, ?uid to cooling action under conditions 20 the arrows. Fig. 3 is a sectional view taken substantially on whereby minimum loss of ef?ciency is encoun tered. ‘ , ' > the line 3-3 of Fig. 2 looking in the direction of ' the arrows. _ i A further object of the invention resides in the Fig. 4 is a view similar to Fig. 2 showing a mod provision of a ?uid transmission having spaced cooling chambers so positioned that circulation 25 i?ed form of the invention. Fig. 5 is a sectional view taken substantially on of the power transmitting ?uidinduces it to ?ow the line 5—-5 of Fig. 4 looking in the direction of through the cooling chambers. the arrows. Another object of the invention is to provide a Fig. 6 is a sectional view similar to Fig. 4 show ?uid transmission having rotatable impeller or turbine members provided with external cooling 30 ing a still further modi?ed form of the invention, Fig. 7 is a sectional view taken substantially chambers to receive a portion of the ?uid as it on the line 'l--—‘! of Fig. 6 looking in the direction circulates ‘to subject the ?uid to a cooling action. ' Another object is to provide a ?uid transmis sion having rotatable impeller or turbine mem-" of the arrows. ' ?g. 8 is a' sectional view showing a still further bers made of light weight. corrugated members modified form of cooling arrangement. connected to ?uid de?ecting vanes v‘to provide a Fig. 9 is a fragmentary sectional View showing the application of the cooling feature to a turbine light but strong ?uid energizingror'energy ab sorbing member wherein circulation of the power transmitting ?uid induces a ?ow of ?uid through the spaces provided by the corrugated members to subject the ?uid to acooling action. '. , Still a further object of the invention resides in the provision of cooling chambers for relatively movable members whereby circulation ,of the runner. ‘ . ' . Before explaining in detail the present inven tion it is to beunderstoodv that the invention is not limited in its application to the details of con struction and arrangement of parts illustrated in the accompanying drawings, since the invention is capable of other embodiments and of being power transmitting ?uid induces a ?ow of ?uid 45 practiced or carried out in various ways. ' Also it is to be understood that the phraseology or through the cooling chambers. ' ' terminology employed herein is for the purpose Still a further object is to provide means asso of description andnot of limitation. ' ’ ciated with a ?uid transmission housing whereby Referring now to Fig. 1, it will be observed that a portion of the power transmitting ?uid maybe progressively passed through av heat radiating 50 a driving shaft H! has secured thereto a housing I2 having thereon a starter ring gear I4 and a chamber associated with'the housing. ?ange H5. _The ?ange I6 is adapted to receive a Still another object resides in the provision of radially extended cover plate I8 having a ?ange a transmission housing having heat radiating pro jections adapted to receive spaced vanes posi tioned to lie adjacent the inner wall of the hous 20 adapted to be detachably connected to th 55 ?ange I6 by suitable bolts 22. ~ 2,407,496 3 4 The radially extended portion of the housing I2 is provided with a plurality of preferably cir cumferentially extended corrugations 24 whereby the atmosphere whereupon rapid dissipation of 30 are contoured as illustrated in Fig. l to pro— in an ef?cient manner to provide the desired de heat may be effected. It will be apparent that if desired, cooling ?ns may be applied to the corrugations 24 or to the liquid cooling chambers 26 may be formed be tween'the corrugations 24 and radially extended GI surface of the impeller housing to increase the ?anges 28 carried by impeller blades 39 providing heat dissipating characteristics of the device. an‘ impeller channel. A plurality of spaced The cooling chambers 26 need not be concentri apertures 29 in the ?anges 28 may be provided cally formed, but may be of any desired con?gu to admit circulating liquid into the cooling ration or shape. 10 chambers 26. The embodiment of the invention illustrated in Figs. 4 and 5 is similar in many respects to that A driven shaft 32 coaxially aligned with the illustrated in Figs. 1 to 3. It will be noted that driving shaft Ill has thereon a turbine hub 34 the ?anges 28 of the impeller vanes 33 are short secured against relative rotation by splines 36. ened to provide a space 33 between successive The turbine hub 34 carries a turbine web 33 which supports a turbine shroud 43 through suitable 15 impeller vanes whereupon power transmitting second 'stage turbine vanes 4.2. The turbine ?uid may readily ?ow into the cooling chambers shroud 43 is provided with ?rst stage turbine 25. If desired. auxiliary ?uid outlet passages 35 vanes 44 aligned with the impeller channel de through the ?anges 28 may be provided to in ?ned by the impeller blades 3!). crease the outlet area above the inlet area to in Interposed between the ?rst stage turbine vanes 20 sure more rapid and positive dissipation of the 44 and the second stage turbine vanes 42 is an power transmitting ?uid from the cooling cham axially movable guide wheel member 45 carried bers under the in?uence of centrifugal force and by a guide wheel web 43 suitably mounted on a suction exerted by the ?uid ?owing radially in the guide wheel hub 58 having internal ‘helical power transmitting ?uid circuit over the ?anges threads 52 cooperating with external helical 25 28 of the impeller vanes. threads 54 carried by a sleeve 56. The embodiment illustrated in Figs. 6 and 7 One-way brake means 58 may be interposed is generally similar to that discussed in connection between the sleeve 56 and a stationary member with Figs. 4 and 5. It will be noted that aux 60 to prevent backward rotation of the guide iliary inlet and outlet passages 3‘! and 39 are wheel 46 on the sleeve 56 when the device is 30 provided to permit a more rapid introduction of operating as a torque converter at which time the the power transmitting ?uid into the cooling channel 62 is positioned in the power transmit chambers 26 and to expel it more rapidly there ting ?uid circuit between the ?rst stage turbine from. 44 and the second stage turbine 42. In connection with the embodiments of Figs. 4 One-way driving means 66 interposed between to '7 it will be noted that the ?anges 2B of the the sleeve 56 and an axially extended ?ange 68 impeller blades 30 need not accurately align with carried by the turbine hub 34 may be provided each other since a free space is provided between to prevent the guide wheel 46 from rotating freely successively spaced blades. Greater manufactur in the forward direction in the power transmit ing tolerances are thus insured whereupon the ting ?uid circuit when the ‘guide wheel 45 is device may be manufactured more easily. shifted axially to position a channel 18 in the In the embodiment illustrated in Fig. 8 it will power transmitting ?uid circuit between the ?rst be noted that the housing I2 is provided with cor stage turbine 44 and the second stage turbine 42. rugations of varying degree whereby cooling In this position the circulating ?uid impinges chambers 3'! extending over considerably greater upon the vanes in channel 19 thereby transfer F radial length are provided to permit the ?uid to ring energy through the web 48, guide wheel hub ?ow a greater radial distance as it passes through 50, sleeve 56, one-way driving means 55, ?ange the cooling chambers. These corrugations may 68, to the driven shaft 32. take any desired form and any suitable inlet and Referring now to Figs. 2 and 3 it will be ob outlet means may be provided to assure the de served that the ?anges 28 of the impeller blades sired ?ow of ?uid through the cooling chambers vide the desired inner surface of the power trans mitting ?uid circuit. It will be noted that a plurality of spaced cooling chambers 26 are formed by the concentric corrugations 24 of the housing. gree of cooling with minimum ?uid turbulence. Fig. 9 illustrates the application of the cooling feature to the ?rst section turbine member 44. . It will be noted that the housing I2 is provided with corrugations 4| to provide a cooling chamber Each cooling chamber 213' is provided with spaced inlet and outlet openings 29—A and iii-B respectively whereby a portion of the power trans 43 between a turbine shroud 45 and the casing l2 whereby a portion of the power transmitting ?uid may ?ow through the corrugations 43 and be mitting ?uid ?owing radially outwardly in the'di 60 returned to the power transmitting ?uid circuit at any desired point such for example as adja rection of the arrow 3| ?ows into successive cool cent the guide wheel channel 46. ing chambers 26 through the inlet openings 29-A This type of construction may be employed in and is again introduced into the power transmit any location where a ?uid energizing or energy ting ?uid circuit through the outlet openings absorbing member rotates at a different speed 29-13. than a juxtaposed member. It will be apparent In the operation of this device a portion of that cooling ?ns 41 may be provided to accelerate the ?uid is constantly introduced into and ex the dissipation of heat from the relatively mov pelled from the cooling chambers 26, and the cooled ?uid is re-introduced into the ?uid circuit to mix with the uncooled fluid and prevent the temperature of the power transmitting ?uid from able members. This is a continuation in part of my copending application, Serial No. 387,462, ?led April 8, 1941, now Patent Number 2,363,731, issued November rising beyond a desired temperature. The exter 28, 1944. nal surface of the impeller housing being corru I claim: gated provides a large surface area in contact with 75 1. In a ?uid‘ transmission, a corrugated housing, 2,407,496 5 a power transmitting ?uid circuit in the housing . 6 5. In a ?uid power transmitting device, a hous ed housing multiple cooling chambers communi ing having a generally radially extending outer wall, spaced vanes positioned in the housing, and liquid cooling chambers interposed between the cating with the ?uid circuit. 2. A ?uid transmission comprising a corrugat ed housing, ?uid de?ecting blades carried there by 'and de?ning therebetween cooling chambers. transmitting ?uid circuit including a plurality of and?uid de?ecting blades in the circuit having ?anges de?ning in conjunction with the corrugat 3._In a ?uid transmission, a. housing, a power transmitting ?uid circuit therein, a plurality of blades in the ?uid circuit, said blades de?ning in conjunction with the housing multiple cooling outer wall and the spaced vanes. 6. In a ?uid transmission, a housing having concentrically arranged corrugations, a power liquid de?ecting vanes providing relatively smooth internal surfaces, and liquid cooling chambers be tween said corrugations and internal surfaces having communication with the power transmit chambers communicating with the power trans mitting ?uid circuit. ting ?uid circuit between the vanes. 7. In a ?uid transmission, a housing having transmitting ?uid circuit in the housing, ?uid en positioned in the housing having ?anges welded to the corrugations whereby liquid cooling cham concentrically disposed corrugations, spaced vanes '4. In a ?uid transmission, a housing, av power 15 ergizing blades in the circuit having ?anges de bers are formed between the corrugations and ?ning in conjunction with the housing multiple ?anges. ?uid, cooling chambers, the blade ?anges being JOSEPH JANDASEK. 20 spaced apart to provide inter-communication be tween the cooling chambers and the ?uid circuit?