Патент USA US2385263код для вставки
SePt- 18, 1945. 'ca_ R. ERlcsON ErAL FLUID pRIvE 2,335,263 Filed May 21, 1941 Floß. . ` ATTORNEY Patented Sept. 18, 1945 ` 2,385,263 vr" i.. i sPA'rsr orrios 2,385,263 FLUID DRIVE George R. Ericson, Kirkwood, and lrven E. Coirïey, Normandy, Mo. Application May 21, 1941, Serial No. 394,418 3 Claims. l (Cl. 60-54) ' cover member i I attached to the rotor housing i. This invention relates to iluld drives and par ticularly to those having a pair of vane or tur bine wheels, together deñning a chamber con taining oil or similar operating huid.y Previous devices of this character have been subject to the diiiiculty caused by the dragging of the tur-' bine wheels at low speeds, whereas, it is desir able that the wheels become completely free and disengaged when the speed of rotation drops be low a predetermined rate. Attempts have been made to eliminate this dragging by withdrawing the fluid from between the turbine wheels, but devices for this purpose have not been entirely successful, and itis an object of this invention to vproduce a new and improved ñuid drive, to gether with a new and improved method and The rotor housing contains aplurality of float chambers -or cylinders I2 in which are mounted the floats or pistons I3. These floats are not necessarily iltted to the members i2 in such a manner as to prevent leakage, as the principle of operation is not dependent on the prevention of leakage at this point. The pistons , I3 are connected to a slidable member Il by means of connecting rods I5 hav means oi withdrawing the huid from between lng wrist vpins st I6 and Il, respectively. The member I4 is slidable on the shaft 9, but keys it may be provided to prevent relative rotation be tween pistons i3 and the shaftyif desired. A strong spring It ls mounted between the flange 1 at the end of the shaft i and the slidable mem ber N. This spring is strong enough to over the turbine wheels. come the centrifugal force of the pistons iii when _ . ' Other objects and advantages will be appar the operating speed is below the speed at which ent upon consideration of the following descrip 20 the clutch or drive is desired to be engaged. It will be understood that the housing is sup ' tion, claims, and accompanying’drawing. Referring to the drawing, plied with at least suiilcient oil to cause theime . Figure l. isa somewhat diagrammatic, longi peller 5 and turbine t to be completely filled tudinal section of our improved duid drive show when the parts are in theposltion shown in Fiil- » ing the parts in the msitions which they occupy 26 ure 1. However, when the pistons it are with.. at high speeds when the clutch or drive is en-~ drawn, the capacity of the cylinders it is sum gaged. cient to receive substantially all the oil con Figure 2 is a view similar to Figure l., but show.. tained in the rotor chambers so that the oil may ing the parte in the positions they occupy when the drive> is disengaged. ` 30 i Figure 3 is a cross sectional view taken along the line il-ii oi’ Figure i.4 The reference numeral i indicates a housing which is attached to a prime mover (not shown) which may be an automotive internal combus slightly more distantly from the center of ro tation than the rotor or baille chambers 5 and B, so that the oil will naturally tend to ñow from the rotor chambers to the chambers I2 by cen 35 tion engine. It will be understood that the en gine is attached at the left> of Figures l and 2, whiie the transmission housing 2 is at the oppo site end of the housing. Power shaft 3 is con nected to the engine and carries a rotary main 40 casing d which contains the- driving impeller 5' and also the driven turbine i. 'I'hese rotors are of known construction, but for a more detailed showing, reference is had to United States Pat ents No. v1,199,359, 1,199,360, 1,199,364 and 2,179,520. ` ' The impeller 5 is attached to a -flange 'I4 on Athe end oi the shaft 3 and rotates as a unit with be completely withdrawn therefrom. Tl‘e chambers or cylinders l2 are locatedv trifugal force whenever the pistons I3 are with drawn. it being understood that suitable pas sages 29 are formed to connect the periphery of the turbine housing with the chambers I2. In operation, the spring Il holds the pistons or iloats Il in the positions shown in Figure 2 while the device is at rest and until the speed of rotation imparts sutl'lcient centrifugal force to the floats I3 to cause them to move outwardly ,_ to the. positions shown in Figure 1, thereby dis placing the oil from the iloat chambers I2 into ` the rotor housing. The speed of rotation at which ~the rotor housing is filled may be controlled by the strength of the spring I9 and by the weight the shaft and the housing l, while the'> turbine t is rotatably mounted in the housing d and in 50 of the pistons or iloats I3, but for normal auto motive use lthe rotor housing should be filled at the end of the shaft 3 by means ci’ suitable ball speeds between 400'and 500 R. P, M. When the 'bearings d `and s, respectively. A packing gland ‘ rotor housing is filled, the drive is engaged, al iii is provided to prevent the escape of oil or though a completeengegement of the drive does other duid from the rotor housing. it being un 55 not occur until the speed is still further in derstood thatthe turbine t is enclosed by _a . 2 creased. It is also understood that some slippage is always necessary with this type of drive. While the terni "piston‘" has been used in con nection with the members i8 'and while these members should be guided with accuracy by the sal action, and speed responsive means for caus ing said fluid displacing device to be moved into , said duid chamber when a predetermined speed is exceeded and withdrawn therefrom nt lower speeds. walls oi the chambers or cylinders iii to main tain a proper balance of the device, it should be understood that some leakage past these pistons ' is necessary to prevent the 2. In a ñuid drive mechanism, a rotor chamber containing an impeller and a turbine, a iiuid re ceiving chamber mounted more distantly from retention of oil inthe inner part of the housing while the vdevice is op erated. Normally sumcient leakage past the walls the axis of rotation than said rotor chamber is 10 mounted, and means for positively urging the operating huid from one oi’ said chambers to the other in accordance with the speed oi’ rotation of the pistons to taire care of this will occur, but the skirts 2i oi’ the pistons should be provided with drain holes 22 to prevent oil from being re tained inside the pistons. We claim: f . 15 through a conduit connected to the outer periph ery of the rotor chamber, said means comprising iduid displacing members having a combined vol ume equal to the volume oí’ the ?iuid which is all l. In a iiuid drive mechanism, e rotary hous the oil contained in the rotor chambers. ing member, means forming a rotor chamber in 3. in a ñuid drive mechanism, a rotonchom~ said housing, and an impellerin said chamber, means forming a, uuid chamber in said housing, 20 ber containing an impeller and a turbine, a duid receiving chamber mounted more distantly from at least a portion oi’ said chamber being more the axis oí' rotation than said rotor chamber is distantly spaced from the axis than the main portion of the rotor chamber whereby operating mounted, and means for shifting the operating ñuid from one of saldi chambers to the other in accordance with the speed of rotation through a fluid will tend to flow from said rotor chamber to said iìuid chamber through a conduit connected 25 conduit-connected to the outer periphery oi’ 'the to the outer periphery of the rotor chamber by centrifugal i'orce, a duid displacing device hav ing a volume equal to the volume of the fluid which is to be displaced movable into said ñuid chamber to cause duid to be forced into said ro tor chamber and withdrawable from said ñuid chamber to permit the return oi iiuid from said rotor chamber to said ñuid chamber by centrifu rotor chamber, said means including a plurality of radially movable fluid displacing members having a combined volume equal to the volume oi’ all of the ñuid contained in the rotor chambers constructed and arranged to be moved by cen° trifugal force into said fluid receiving chamber. GEOME R. MICSON. m'VEN E'. COFFEE?.