中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.033 seconds)

    11.
    发明专利
    未知

    公开(公告)号：FR797120A

    公开(公告)日：1936-04-21

    申请号：FR797120D

    申请日：1935-10-31

    Applicant: SULFLO CORP OF AMERICA

    12.
    发明专利
    未知

    公开(公告)号：FR793602A

    公开(公告)日：1936-01-28

    申请号：FR793602D

    申请日：1935-08-09

    Applicant: SULFLO CORP OF AMERICA

    IPC: F16N17/00

    Abstract: A lubricant adapted for high-pressure and high-temperature use comprises finely-divided particles of organic material dispersed in mineral oil. Specified organic materials are polymerized and/or oxidized oils, e.g. tung, linseed, soya bean, castor and corn oils, and mixtures; vulcanized rubber and castor, soya bean, corn, linseed and tung oils; oxidized asphalts and petroleum resins; insoluble, high-melting soaps, e.g. the aluminium soap of polymerized tung oil; lignin; fatty-acid pitches; and insoluble, high-melting synthetic and natural resins, e.g. coumarone-indene resins. The particles may be ground up with or formed in the oil vehicle. If the particles are not self-sustaining, auxiliary particles may be employed to form a stable suspension, e.g. a soap such as aluminium stearate or sodium oleate may be dissolved, with heat, in mineral oil, cooled to form a gel, and agitated to produce finely-divided gel particles through which the lubricant-particles are distributed. Carnauba wax may be used. In examples: (1) and (2) tung oil dissolved in light petroleum oil is oxidized in the presence of a catalyst, e.g. cobalt naphthenate, by continuous circulation and agitation in contact with air; (3) powdered lignin is dispersed in light petroleum oil gelled with carnauba wax; (4) vulcanized corn oil, produced by treating corn oil dissolved in carbon tetrachloride with sulphur monochloride, is crushed to powder and ground with an equal volume of petroleum oil. A machine for testing lubricants is also described comprising a lower vertical chuck carrying three stator balls of carbon steel surrounded by a lubricant cup, and an upper aligned chuck carrying a single ball of chrome steel and adapted to be rotated by an electric motor. The lower chuck is movable vertically, e.g. by an hydraulic piston, to apply pressure and is mounted upon ball bearings so as to be free to turn. In use, the cup is filled with lubricant, the upper chuck is rotated and the lower chuck is raised to apply pressure, sufficient torque being applied to hold it against rotation. After the test, the area of wear on the lower balls is measured, and the load-sustaining capacity of the lubricant is computed from the bearing surface and the load.

    Improvements in and relating to the suspension of lubricating and other particles in less dense fluid media
    13.
    发明专利
    Improvements in and relating to the suspension of lubricating and other particles in less dense fluid media 未知

    公开(公告)号：GB428463A

    公开(公告)日：1935-05-10

    申请号：GB3138033

    申请日：1933-11-10

    Applicant: SULFLO CORP OF AMERICA

    Abstract: The Specification refers to U.S.A. Specification 1,913,300, describing the production of a freely-flowing cutting lubricant in the form of a "fluid-gel" by dispersing powdered sulphur with vigorous stirring and agitation throughout a gel formed by dissolving or dispersing, with heat and agitation, a soap in an oil, or starch, gum, glue, gelatine &c. in water, and allowing the solution to cool without agitation; and consists in preventing the formation of a serum layer in such a "fluid-gel" having denser particles distributed therethrough, by introducing air in minute bubbles and in an amount sufficient substantially to counterbalance the weight of the suspended particles. Stable suspensions of solid and liquid particles may be obtained. Thus, to produce a stable, freely-flowing sulphur lubricant, sodium oleate is dissolved in fuel oil by heat and agitation and the solution is allowed to cool, without agitation, until a gel is formed; flowers of sulphur is added and dispersed by vigorous stirring, after which the mass is passed together with air under pressure through a check valve. Air may be introduced by beating up the gelatinous mass. Soaps other than sodium oleate may be employed. Sulphur may be dispersed in an aqueous vehicle, e.g. with starch. A selenium lubricant may be produced in a similar manner. Grinding compositions may be produced by dispersing a compound containing powdered carborundum or emery in a mineral oil-sodium oleate gel.

Patent Agency Ranking