Abstract: A clamping collar for sealing by perimetrically connecting the axially aligned ends of two parts which are circular in external transverse cross-sectional shape. The collar includes a strip formed into an open loop, V-shaped in longitudinal section, having two circumferentially opposite ends, and a tightener for extending force on the ends for circumferentially tightening the collar on the ends of the two parts. The tightener includes a separator for separating the two ends when the collar is loosened, for facilitating the opening and removal of the collar from the parts.

Abstract: A hose clamp including a band having end portions extending in an overlapping relationship through a housing. One end portion is secured to the housing while the opposite end portion is arranged for displacement through the housing. The housing encloses a screw mechanism with a screw worm in engagement with a row of gear teeth formed in the displaceable end portion of the band and by which the hose clamp may be tightened about an object.

Abstract: The invention concerns an improved hose clamp consisting of an outer annular tightening band (1) which is provided with a tightening device (3, 4), and of a resilient band (2) which extends along the inner face of the tightening band (1). The resilient band is provided with two axially spaced, inwardly directed peripheral beads (6) which extend around the resilient band (2). Intermediate the beads (6) the resilient band (2) is formed with an outwardly directed ridge (7) in abutment against the inner face of the tightening band (1). By means of a number of openings (8), the ridge (7) is divided into a number of bridges (9) which interconnect the beads (6) with one another around the resilient band (2). These bridges (9) are arranged to allow bead movability in the radial as well as axial directions.