The present invention has for its object, an internal micrometer comprising a cylindrical body, a control shaft which is movable in a rotational and longitudinal manner within the body and two conical coaxial members connected to one another by a rod, driven by said shaft and controlling the movements of at least one measuring key movable perpendicularly to the shaft of said conical members.

An internal continuous mixer with parallel mixing rotors and a screw controlled discharge. Each rotor comprises a central bladed mixing portion, a screw infeed portion and a screw outfeed portion. The threads of the screw outfeed portion have nonuniform crest diameter thus working the material being mixed, and providing clearance permitting the material discharge rate to be controlled down stream therefrom as by an enclosed material conveyor or feed screw, preferably a screw extruder apparatus.

A catheter for insertion into a patient's urethra is provided, comprising: (a) first and second tubular members having such a diameter for enabling drainage of physiological fluids therethrough, the first and second tubular members being interconnected by means of a connecting tube of substantially smaller diameter; (b) an inflatable balloon attached to the second tubular member, the inflatable balloon being in fluid communication with the connecting tube. The inflatable balloon is inserted to t...

Internal suspenders having an undergarment to be worn under an outer garment that is tucked into a user's pants, the undergarment having a piece of hook and loop material at each of at least two separated positions at the front of the undergarment spanning the anticipated belt line of a user, first and second members, each also having a piece of hook and loop material fastened thereto, the piece of hook and loop material on the first member cooperating with the piece of hook and loop material on...

An internal broach for internally broaching profiles, defined by a bottom and flanks, of female serrations of a work piece having a toothed section with several rows of broach cutting teeth, the rows being disposed successively counter to a direction of broaching, with successive broach cutting teeth being allocated to each other for broaching a profile. The broach cutting teeth have bottom cutting blades and first and second sides. The first sides are guide flanks, the edges of which are guide ...

An internal breather for removing oil from blow-by in an internal combustion engine is disclosed. The breather includes a breather cover having a breather cover drainback hole. The breather further includes a breather cover seal in sealed engagement with the breather cover, and the breather cover seal includes a breather cover seal drainback hole that is aligned with the breather cover drainback hole to create a drainback passage. A breather chamber is bounded on at least one end by the breather...

An internal broach for the broaching of profiles defined by a bottom and flanks, in particular of internal toothings, in a workpiece is provided with broach cutting teeth which have bottom-cutting edges and flank-cutting edges. Over their full profile height, the flank-cutting edges of broach cutting teeth disposed one after the other and allocated to each other have an ascending profile in the range of 1 .mu.m to 3 .mu.m.

An internal mixer having a floating weight disposed in contiguous with an internal mixer main body and made elevatable in a hopper to which a material to be mixed is charged, wherein a hydraulic cylinder for elevating the floating weight is disposed in contiguous with the internal mixer main body, a pneumatic/hydraulic pressure conversion means for pressure conversion between a hydraulic side and a pneumatic side is disposed separately from the internal mixer main body, and the hydraulic side of...

An internal mixer and controller enables the phase difference and the speed ratio between two rotors to be changed without stopping the operation of the mixer. The internal mixer comprises: nonintermeshed first and second rotors disposed in a mixing chamber; first and second drive units; first and second phase measuring devices; first and second speed measuring devices; and a control unit for controlling the first and second drive units on the basis of signals from the first and second speed mea...

A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as magnesium peroxide. The encapsulating material may be a polymer, including enteric polymers. The release of peroxide, from peroxide sources generally, can be controlled by means of pH such that peroxide source can be activated, and per...