| 摘要 |
A hose clamp 10 of the type in which a flexible band 12 provided with teeth 32 extends from a head 14 and is passed back for the teeth to be engaged by locking means within the head has an inwardly projecting formation 36 on a clamping surface of the band to engage a cylindrical clamping surface 48 of a hose 44. The surface 48 is preferably defined between annular ridges 52. Alternatively the clamping surface 48 of the hose can have an outwardly-protruding formation which engages a cylindrical clamping surface of the band 12. This formation can be either integral with the hose or be formed on an insert located in a depression in the hose clamping surface 48. The projecting formations are narrower than the clamping surfaces an concentrate the clamping force. |
