Abstract: A clamp structure which includes a clamping band with open ends adapted to be interconnected and with an ear for tightening the clamping band about an object to be fastened by plastic deformation of the ear; the free ends of the clamping band are provided with arched surface portions, as viewed in transverse cross section, to provide outwardly extending, groove-like reinforcing embossments, and at least one end of the band is of tapered configuration, as viewed in the circumferential direction thereof, with the tapering side surfaces converging toward each other in the direction toward the respective band end so that the arched surface portion of the one band end is able to engage in the overlying arched surface portion near the other band end to assure thereby a continuously smooth, stepless internal configuration of the band during tightening thereof by contraction of the ear as the diametric dimension is reduced.

Abstract: An at least two-partite clamping sleeve for connecting pipe ends provided with flanges, in which the clamping sleeve includes an open one-piece or multi-partite ring that includes inner side surfaces inclined in relation to the ring axis for abutment at the pipe ends, and a cylindrical outer surface connecting the lateral surfaces; the mutually opposite free ends of the open ring are provided with outwardly projecting hooks or with slots while one or several connecting members with an ear-like bulge are used whose ends are provided with slots or hooks for engagement with the hooks or slots, respectively, of the free ring ends.

Abstract: A mechanism for gripping hoops which encircle a building structure consisting of first and second angles having first legs abutting each other and second legs engaging the building structure, channels that are substantially semi-circular in cross-sectional configuration provided in the first legs defining a substantially circular passageway through which one of the hoops passes and a bolting mechanism for adjustably securing the first legs together to grip the hoop.

Abstract: Apparatus for clamping the hose of a nipple including a clamp of the type having a band with interengageable barb means and apertures spaced from one another for accommodating maintenance of the band in a clamping position around a hose. A tightening device for accommodating assembly and disassembly of the band around a hose is provided, which tightening device includes a rigid housing having apertures engageable with barbs on the band and a rigid member having teeth for engaging in apertures in the band slidably guidably carried by the rigid housing. A manually rotatable gear wheel is pivotally mounted in the fixed housing and includes gear teeth engageable with gear teeth at the rigid bar such that pivotal movement of the gear wheel forces the rigid bar to move in the circumferential direction with respect to the rigid housing.

Abstract: Bundle tie devices, which may be of metal, comprises a thin strip of material having transversely extending slots. The slots have enlarged ends and the material between the enlarged ends is formed outwardly to provide vanes which are interleaved when the device is applied to a bundle. The side of the strip which is against the bundle has no projections which might damage the insulation of the wires in the bundle.

Abstract: A corrugated banding strap for securing an electrical cable to a tubing string for lowering into a well.