Improvements in hermetically-sealed couplings for connecting rotary driving and driven elements

摘要

891,213. Linkwork for conveying rotary motion. HYDRO-PNEUMATICS Ltd. Sept. 23, 1960 [Aug. 24, 1960], No. 29232/60. Class 80 (3). In a fluid-tight rotary coupling, e.g. for pumps or hermetically sealed instruments, wherein a non-rotatable wobble pin 6 fixed in a flexibly mounted diaphragm 19 sealing the end wall of a cylindrical housing 1 engages through bearings 11 at its opposite ends an inclined bore 7 and a slot 9 in respective dogs on the coaxial driving and driven shafts 4, 5, the pin 6 has a portion 12 of square or polygonal section engaging a corresponding hole in a plate 14 fixed in the housing 1 so that rotation of the pin on its own axis is positively prevented. The rigid metal diaphragm 19 is welded to the pin 6 and is flexibly carried by a stainless steel bellows 18 welded to a ring 17 secured to the end plate of the housing. The ring 17 surrounds the flange of a fixed sub-housing 15 carrying the plate 14. Specification 849,420 is referred to.