| 摘要 |
1465237 A hose clamp THOMSON INTERNATIONAL CORP 20 May 1975 [3 Sept 1974] 21655/75 Heading E2B A hose clamp comprises a band 18, Figs. 1, 4, 5 and 6, the band having a protuberant inclined portion 27 and an engagement portion provided with teeth 24, a housing 50 carried by the band 18, a worm 54 supported by the housing 50, the engagement portion of the band being movably positioned adjacent the housing 50 and the latter being movable along the band and having legs 58, 60 engaging the inclined portion 27 for moving the worm 54 into and out of engagement with the teeth 24 in the band 18. The band may be made from metallic or synthetic plastics material, the protuberance 27 has a ramp portion 28 and an abutment portion 30, the latter being joined to the ramp portion 28 by a wall 34, which has an opening 36 therein, and the band is provided with lugs 40. The worm 54 has a head 57 for rotation thereof. The leg 60 of the housing 50 has a tab 62 which fits into a notch in the leg 58. Each leg is provided with a stem 66 which enters into the opening 36 in the wall 34 when the legs engage the wall 34 and the worm 54 engages the teeth 24 of the band 18. The rotation of the worm effects the increasing or decreasing of the diameter of the band. When the housing 50 is located as shown in Fig. 6 the worm 54 has disengaged the teeth 24 and the band can be moved freely through the housing 50. In modifications the inclined portion 27 is replaced by a pair of ramps, one end of the band is formed into a loop and has a ramp attached to or integral therewith, the legs are angularly inclined for receiving positioning lugs therebetween, and stop lugs are provided to limit the movement of the housing prior to clamping being effected. |
