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公开(公告)号：US3851434A
公开(公告)日：1974-12-03
申请号：US41272073
申请日：1973-11-05
Applicant: BOYD T
Inventor： BOYD T
CPC classification number: E04D13/165
Abstract: Parallel sheet metal roofing pans having upwardly extending sides with inturned flanges along their upper edges are located at opposite sides of a batten that is in the form of an inverted sheet metal channel having spaced sides connected at their upper edges by a web and having outwardly extending supporting flanges along their lower edges projecting beneath the adjoining pans. Each of the channel sides is cut to provide it with a plurality of tongues spaced lengthwise thereof and integrally connected at one end to the side adjacent the channel web. The tongues are bent upward between the channel sides and adjoining pan sides and then hooked around the adjoining pan flanges to anchor the pans to the batten.
Abstract translation: 具有向上延伸的侧面的平行的钣金屋顶板具有沿着其上边缘的带凸缘的凸缘，位于板条的相对侧，该板条具有倒置的金属板通道的形式，其间隔开的边在其上边缘处通过腹板连接并具有向外延伸 沿其下边缘的支撑凸缘突出在相邻的平底锅下方。 每个通道侧面被切割以提供多个长度方向间隔开的舌片，并且一端连接到与通道腹板相邻的一侧。 舌片在通道侧和相邻的平底锅侧之间向上弯曲，然后钩在相邻的锅法兰上，以将平底锅锚固到板条上。
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公开(公告)号：US3840806A
公开(公告)日：1974-10-08
申请号：US38967273
申请日：1973-08-20
CPC classification number: G01R27/22 , G01N27/07 , G01N33/4905
Abstract: An improved method and apparatus for monitoring and studying blood clotting times are disclosed. The method includes the step of passing a direct current through a blood or plasma sample and observing the electrical resistance of the sample during the clotting process. The electrical resistance, when plotted against time, is found to form a sigmoid curve having distinct inflections which signify the occurrence of both gellation and fibrin cross-linking within the clotting sample. The apparatus of the present invention includes a sample container which is preferably a disposable cup having a pair of electrodes suitably mounted in it and connected to an electrical connector. A current source is provided for supplying a constant current to the plasma or blood sample, and is equipped with an electrical coupling for mating with the connector on the disposable sample container. A chart recorder is coupled to the constant current source for providing a continuous indication of the sample resistance.
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公开(公告)号：US3715991A
公开(公告)日：1973-02-13
申请号：US3715991D
申请日：1970-09-04
Applicant: BOYD T
Inventor： BOYD T
IPC: B64F3/02
CPC classification number: B64F3/02
Abstract: A transportation system combining the use of both a monorail and an airborne vehicle powered by electric motors from an electric power source located along the monorail. Rigid universally movable struts interconnect the vehicle with the monorail with electric cables housed by the struts for supplying electric current from a power source to the motors. Landing-loading platforms are located along designated locations at which the vehicle may be landed for the pick-up and discharge of passengers.
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