Abstract: An improved worm drive clamp comprised of a flexible metal clamping band and a housing containing a tightening screw is secured to one end of the band. The tightening screw is axially and angularly displaceable within the housing for engagement and disengagement from an engageable free end of the band which is passed through the housing to form a band loop for securement about an object. The housing is comprised of opposed guide channels through which opposed edge portions of the free end portion of the band is caused to pass to position the free end portion in a fixed arcuate plane for engagement and disengagement with the displaceable tightening screw which is located thereabove in a screw retention portion of the housing. The tightening screw pivots in a slot formed in an end wall of the housing and displaced outwardly in a further slot formed in the opposed end wall of the housing. The housing is also formed from a unitary metal piece.

Abstract: A worm drive clamp comprising a flexible metal band having a housing secured to a connecting portion thereof. A worm screw, having a spiral thread, is supported for axial rotation in the housing adjacent a side of the band connecting portion. The worm screw has its rotational axis co-extending with the longitudinal axis of the metal band. A resilient leaf spring is secured to the side of the band adjacent the worm screw for biasing the free end portion of the band positioned thereover against the screw when the band is tightened about an object. The free end portion of the band is provided with spaced-apart screw thread engaging teeth or slots along a length thereof to engage with the spiral thread of the worm screw. The housing is also provided with an inlet and an outlet port for the passage of the free end of the band through the housing.