Abstract:
A heavy duty lubricating grease as shown which includes a multi-purpose heavy duty hydrocarbonaceous lubricant thickened by an alkaline soap to form a lubricating grease, molybdenum disulfide and powdered calcium fluoride. The heavy duty grease can be used in a journal bearing of a drill bit in heavy duty, high temperature applications, such as journal bearings on its used to drill hot subterranean formations.
Abstract:
This invention discloses a new ferrofluid and the use of ferrofluids in magnetically controllable couplings such as electromagnetic clutches and brakes. The new ferrofluid is comprised of a stable suspension of magnetizable particles having a size of at least one micron, a fluid carrier and a complexing agent. The complexing agent maintains the magnetizable particles in suspension within the carrier fluid.
Abstract:
Lubricant system for sheet and section rolling mills, containing a solid lubricant, an adhesive component and/or a thickening agent, and also water as a carrier medium. The lubricant system is sprayed onto the working cylinder in the roll stand as a suspension, at least some of the water evaporating and a firmly adhering, waterproof, lubricating and separating film forming on the working cylinders.
Abstract:
Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
Abstract:
This invention provides lubricants which perform stable operation even at high temperatures and under heavy loading. The lubricants are prepared by dispersing at least one of finely powdered resin selected from aromatic resin and polyimide resin into the fluid fats and oils. The flowable fats and oils may further contain molybdenum disulfide, organic molybdenum, boron nitride, or PTFE.
Abstract:
A new water-base lubricant composition has been discovered which is uniquely suitable for elevated temperature metal forming operations. The water-base lubricant invention herein generally comprises, about 1% to about 40% by weight of a polycarboxylic acid salt reaction product, such as trimellitic acid and an alkali metal or an alkali earth metal hydroxide, such that the pH of the composition is about 6.5 to about 10; about 0.1% to about 12% by weight of a water dispersible thickening agent; and the balance water. The water-base lubricant may also include extreme pressure additives, performance enhancers, and biocidal agents. Also disclosed is a process for using the above-described water-base lubricant composition.
Abstract:
Compositions, which are obtained by mixing and/or, optionally simultaneously, grinding a preferably liquid phosphate and a solid lubricant component, such as, graphite, are very suitable as additives for lubicants.
Abstract:
Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
Abstract:
The present invention includes a method for the manufacture of a bearing seal which includes providing a polymer and/or a filler coated with a polymer and thereafter heating the coated filler to bond the copolymer to the filler. Following cooling of the coated filler, it is pulverized and added to granular polytetrafluoroethylene. This admixture is then mixed to obtain a uniform blend and thereafter shaped by compacting and heating into a preselected form. Fillers suitable for the present invention may be carbon, metal, glass, carbide, disulfide, polymeric, polyester fluoride and ceramic fibers.
Abstract:
Improved composite bearings are provided employing cold forming and sintering techniques. Improvements in compositions for impregnating porous layers of composite bearings are provided comprising lead or lead alloy, perfluorinated polymer, particulate thermoplastic polymer and clay in particular proportions. When such materials are formed into bearings and subsequently sintered, improved resistance to stripping and wear is provided.