Abstract: The invention is characterized in that in order to improve tensile strength and draw operability for a two-loop coiled type claming device and to suppress the amount of slack to the minimum necessary, the arrangement is such that when the bore diameter of a clamp band 11 is forcibly contractively deformed by inserting a draw operating tool (F) between first and second tool engaging teeth (18) and (22) cut up outwardly from the inner and outer overlap portions (11a) and (11b) of the clamp band 11 to engage the tool (F) with the teeth (18) and (22), a first fixing tooth (17) of raised channel shape cut up outwardly from the inner overlap portion (11a) and a second fixing tooth (21) of recessed channel shape cut up reversely or inwardly from the outer overlap portion (11b) seizure-wise engage each other by a fixed amount (L4) through a tool relief reception communication hole (24) in the intermediate overlap portion (11c) interposed therebetween.

Abstract: The invention is characterized in that in order to improve tensile strength and draw operability for a two-loop coiled type claming device and to suppress the amount of slack to the minimum necessary, the arrangement is such that when the bore diameter of a clamp band 11 is forcibly contractively deformed by inserting a draw operating tool F between first and second tool engaging teeth 18 and 22 cut up outwardly from the inner and outer overlap portions 11a and 11b of the clamp band 11 to engage said tool F with said teeth 18 and 22, a first fixing tooth 17 of raised channel shape cut up outwardly from the inner overlap portion 11a and a second fixing tooth 21 of recessed channel shape cut up reversely or inwardly from the outer overlap portion 11b seizure-wise engage each other by a fixed amount L2 through a tool relief reception communication hole 24 in the intermediate overlap portion 11c interposed therebetween.

Abstract: The present invention provides a two-loop coiled type clamping device for semipermanently fixing a fluid conveying hose, dustproof bellows, axial boot or other article to be fixed 10 to the circumferential connecting surface 32 of a mating device 31, characterized in that in order to elastically accommodate changes in the hardness or thickness of the article 10, it is arranged that in a region where the inner and outer overlap portions 11a and 11b of a clamp band 11 overlap each other through the intermediate overlap portion 11c in three layers by a fixed amount X, a first fixing tooth 18 directed inwardly of the outer overlap portion 11b and a second fixing tooth 22 directed outwardly of the intermediate overlap portion 11c come in seizure engagement with each other and in a region where two-layer overlapping takes place excluding said fixed mount X, a plurality of float leg pieces 23 interposed between the external and internal contact regions X1 and X2 enables the clamp band 11 to store diametrically direc

Abstract: A draw operating type clamping device wherein an elastic hump is outwardly bulged from an outer overlap portion of a clamp band to serve as a tension spring element. The device includes an elastic hump taken to be a boundary and at a position reverse to a locking location where the seizing tooth of the inner overlap portion and the fixed tooth of the outer overlap portion of the camp band seizingly engage each other, there are a preparatory seizing tooth outwardly bulged from the inner overlap portion and a preparatory fixed tooth inwardly bulged from the outer overlap portion, so that if a stretch deforming force exceeding the elastic limit should act on the elastic hump, the preparatory seizing tooth and preparatory fixed tooth are brought into seizure engagement with each other, thereby eliminating the danger of the clamp band being loosened.

Abstract: The present invention relates to a clamping device for semipermanently fixing a part, such as a fluid conveying hose, dustproof bellows, axial boot or the like, on the circumferential surface of an desired mating device. According to this invention, even if such part looses its elasticity owing to aging, the clamping device maintains the permanent stable firm clamping state. For this purpose, the inner and outer overlap portions (11a, 11b) of the clamp band (11) are forced by an operating tool to spread until the seizing tooth (18a) of the inner overlap portion (11a) and the fixed tooth (22b) of the outer overlap portion (11b) seize each other, thereby contracting the bore diameter of the clamp band (11). This state is locked by a prop key (23) extending from the outer overlap portion (11b) to engage the inner overlap portion (11a), while an elastic hump (25) for storing the spring force acting circumferentially of the clamp band (11) is outwardly bulged from the outer overlap portion (11b).