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    Method for producing citric acid and citrates
    1.
    发明授权
    Method for producing citric acid and citrates 失效
    生产柠檬酸和柠檬酸盐的方法

    公开(公告)号：US3917686A

    公开(公告)日：1975-11-04

    申请号：US51224774

    申请日：1974-10-07

    Applicant: BJORKSTEN RESEARCH LAB INC

    Inventor： BRUSON HERMAN ALEXANDER

    IPC: C07C51/08 ,  C07C59/265 ,  C07C59/16

    CPC classification number: C07C255/00 ,  C07C51/08 ,  C07C59/265

    Abstract: Citric acid is prepared in a process consisting essentially of the following steps:

    The first step is improved by carrying out the reaction in the presence of a solvent selected from high boiling esters of polybasic acids, which remain liquid at the reaction temperature of -10 to +25*C.

    Abstract translation: 柠檬酸以基本上由以下步骤组成的方法制备：1. COCl 2 + 2 CO = CH 2 + 2 C 2 H 5 OH-> CO（CH 2 COOC 2 H 5）2 HOCH 2 COOC 2 H 5 2.CO（CH 2 COOC 2 H 5）2 + HCN->角度C角NCCH 2 COOC 2 H 5 HOCH 2 COOC 2 H 5 4 H 2 O 3.角度角 - > NCCH 2 COOC 2 H 5 - > HO.C 3 H 4（COOH）3 + NH 4 Cl + 2 C 2 H 5 OH通过在选自多元酸的高沸点酯的溶剂的存在下进行反应来改善第一步， 在-10至+25℃的反应温度下保持液体。

    Method of making nonwoven articles from continuous filaments
    3.
    发明授权
    Method of making nonwoven articles from continuous filaments 失效
    从连续薄膜制备非织造物品的方法

    公开(公告)号：US3616002A

    公开(公告)日：1971-10-26

    申请号：US3616002D

    申请日：1969-11-12

    Applicant: BJORKSTEN RESEARCH LAB INC

    Inventor： PAQUETTE ELMER GORDON ,  GUENTHER KARL RUSSELL

    IPC: B29C70/30 ,  D04H1/00 ,  D04H3/12 ,  B32B5/02 ,  B32B5/04 ,  D04H3/03

    CPC classification number: D04H3/12 ,  B29C70/305 ,  B29K2105/0854 ,  D04H3/07

    Abstract: This invention deals with nonwoven articles made from continuous filaments, including garments and porous sheet materials. In the past, nonwoven products have suffered the handicap of a stiff and ''''boardy'''' feel. We eject continuous yarn or filaments in an air space and contact them with binder droplets while still suspended in air, so that the droplets dry sufficiently to become nonmigrating before they are deposited on the screen or mold on which the fibers are brought into contact with each other and bonding takes place. This method is particularly suitable for making garments of elastomeric fibers, not easily handled in ordinary production machinery. Another generally applicable advantage is that the resultant products are exceptionally flexible and that the articles produced do not split into stratified binder-rich and -poor areas, but are uniformly bonded throughout.

    Heating element, method and composition
    5.
    发明授权
    Heating element, method and composition 失效
    加热元件，方法和组成

    公开(公告)号：US3924098A

    公开(公告)日：1975-12-02

    申请号：US42107373

    申请日：1973-12-03

    Applicant: BJORKSTEN RESEARCH LAB INC

    Inventor： DUNN STANLEY AUSTIN

    IPC: H05B3/14 ,  H05B3/28 ,  F24H9/02

    CPC classification number: H05B3/14 ,  H05B3/283 ,  Y10T29/49083 ,  Y10T29/49101

    Abstract: A heating element is cast, extruded or formed from a composition comprising finely comminuted ferrous metal in a matrix essentially consisting of a base composition consisting essentially of tailings muds from lithium ore extraction, comprising a major percentage of silicon, lesser percentages of aluminum and calcium, and to which some alkali metals or lead may be added in order to ease working and depress the melting point. An electrically conductive composition of controlled resistance is prepared in which the ferrous particles contact each other so as to give the resultant element resistivity of 10 3 to 1,000 Ohm centimeters. The tailings mud is a by-product from ore extraction, which is particularly suitable for this purpose because of its fine state of comminution, and its workability.

    Abstract translation: 加热元件由包含基本上由基本上由锂矿石提取的尾矿泥组成的基础组合物的基质中包含精细粉碎的亚铁金属的组合物浇铸，挤出或形成，其包含主要百分比的硅，较少百分比的铝和钙， 并且可以加入一些碱金属或铅以便于加工和降低熔点。

    Carbon dioxide sensors
    6.
    发明授权
    Carbon dioxide sensors 失效
    二氧化碳传感器

    公开(公告)号：US3694164A

    公开(公告)日：1972-09-26

    申请号：US3694164D

    申请日：1970-12-11

    Applicant: BJORKSTEN RESEARCH LAB INC

    Inventor： GUENTHER KARL R

    IPC: G01N21/78 ,  G01N33/00 ,  G01N21/26 ,  G01N25/48 ,  G01N27/12

    CPC classification number: G01N21/783 ,  G01N33/0027 ,  G01N33/004 ,  Y10T436/204998

    Abstract: ING OF THIS, AND DIFFERENTIAL THERMOMETER ARRANGEMENT MEASURES THE TEMPERATURE OF THIS SURFACE IN COMPARISON WITH AN STANDARD IN WHICH THE SAME INFRA RED SOURCE IRRADIATES ANOTHER SURFACE SIMILARLY, EXCEPT THAT THE LIGHT DOES NOT GO THROUGH ANY GAS CELL OF CHANGEABLE COMPOSITION.

    A SYSTEM FOR SENSING CARBON DIOXIDE CONTENT OF A GAS, IN WHICH THE SURFACE CHANGES IN PROPERTIES REVERSIBLY WHEN IN CONTACT WITH SAID GAS. THIS IS EMPLOYED TOGETHER WITH A MEANS FOR EFFECTING SAID CONTACT AND A MEANS USED FOR MEASURING THE CHANGE IN COMPOSITION. THIS CHANGE IN THE SURFACE CAN BE CHEMICAL, AS FOR EXAMPLE A COMPLEX COMPRISING AN AMINE WHICH REVERSIBLY ABSORBS CARBON DIOXIDE; OR A CONDITION OF TEMPERATURE, IN WHICH CASE THE HEATING EFFECT OF AN INFRA RED RADIATION SOURCE PLACED AT SOME DISTANCE FROM THE SENSING SURFACE, CAUSES A WARM-

    Package for bottles
    7.
    发明授权
    Package for bottles 失效
    BOTTLES包装

    公开(公告)号：US3884354A

    公开(公告)日：1975-05-20

    申请号：US25746372

    申请日：1972-05-26

    Applicant: BJORKSTEN RESEARCH LAB INC

    Inventor： GUENTHER KARL R ,  PAQUETTE ELMER G

    IPC: B65D71/50 ,  B65D71/00

    CPC classification number: B65D71/50

    Abstract: A means of carrying crown capped bottles has been devised which consists of a rigid or semi-rigid plate containing holes whose diameters are large enough to just permit passage of the crowns. The necks of the bottles are inserted into said holes and the bottles secured against falling out in handling by means of distensible collars which fit between the carrier and the crown.

    Magnetic hinge
    8.
    发明授权
    Magnetic hinge 失效
    磁性铰链

    公开(公告)号：US3707017A

    公开(公告)日：1972-12-26

    申请号：US3707017D

    申请日：1970-11-20

    Applicant: BJORKSTEN RESEARCH LAB INC

    Inventor： PAQUETTE ELMER G

    IPC: E05D1/00 ,  E05D7/02

    CPC classification number: E05D1/00 ,  E05D7/02 ,  E05Y2201/46 ,  E05Y2900/132 ,  Y10S16/14 ,  Y10T16/555

    Abstract: Hinge for a magnetically held door, which can be very readily detached and reversed. This hinge is based on a design where two magnetically attracting rollers, rods or cylinders are placed in parallel positions contacting each other lengthwise, one fixed, the other one resting on a shelf attached to the lower end of the first magnet or held perpendicular to said magnet so as to support the weight of the second magnet and any door attached to it.

    Abstract translation: 用于磁性门的铰链，可以很容易地拆卸和倒转。 该铰链是基于这样的设计，其中两个磁吸引辊，杆或气缸被放置在纵向彼此接触的平行位置，一个固定的，另一个搁置在附接到第一磁体的下端或搁置在垂直于所述 磁铁，以支撑第二磁体和连接到其的任何门的重量。

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