| 摘要 |
830,062. Stuffing-box substitutes. SVENSKA KULLAGERFABRIKEN A.B. Sept. 17, 1958 [Sept. 30, 1957], No. 29742/58. Class 122 (5). [Also in Group XXXIV] In a sealing arrangement between two relatively rotatable members, such as a shaft 12, Fig. 2, and a roller bearing housing 16 comprising an elastic O-ring 14 mounted under tension on a conical surface 13 on one of the members concentric with the axis of rotation and arranged so that the ring is urged against a surface 15 on the other member transverse to the axis of rotation, the angle between the axis of rotation and the generatrix of the conical surface is less than 30 degrees. The conical surface may be on the shaft or on a ring secured thereto or on the bearing housing. To facilitate assembly the small end of the conical surface 21, Fig. 5, may be provided with an opposed conical surface 22. In a modification applied to a ball-bearing, Fig. 6, the O-ring 27 is mounted on a conical flange 26 of a sheet metal ring 24 fixed in the outer race 23 and bears against a sheet metal ring 28 seated on the inner race 30. In other modifications, the conical surface is formed directly on the inner race or on a member secured to the outer race. The embodiment shown in Fig. 10 indicates a self-contained unit comprising a sleeve 39 having two oppositely directed conical surfaces on each of which is mounted under tension an O-ring that engages a surface 40 of a sheet metal ring sealed to the shaft 41 by a packing ring 38. In the arrangement shown in Fig. 12 in which a shaft 48 passing through a wall 47 is sealed by the O-ring 44, the rings 45 and 46 act respectively as reserve rings for rings 44 and 45 in the event of the latter being damaged or breaking.
|
