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    Method of constructing fully dense metal molds and parts
    2.
    发明授权
    Method of constructing fully dense metal molds and parts 失效
    构建完全致密的金属模具和零件的方法

    公开(公告)号：US5507336A

    公开(公告)日：1996-04-16

    申请号：US373137

    申请日：1995-01-17

    申请人： James R. Tobin

    发明人： James R. Tobin

    IPC分类号： B22C7/00 ,  B22C9/04 ,  B22C9/06 ,  B22D19/14 ,  B22F3/26 ,  B22F5/00 ,  B29C33/38 ,  B29C45/26

    CPC分类号： B22F5/007 ,  B22C9/04 ,  B22D19/14 ,  B22F2998/00

    摘要： A method of constructing a fully dense metal part or a metal mold half for mating with another mold half to form a mold for casting multiple parts. Steps include placing a pattern in a tubular mold base, casting a ceramic member onto critical surfaces of the pattern, removing the pattern from the mold base, covering the critical surfaces transferred to the ceramic member with a powdered metal having a melting temperature greater than that of an infiltration metal, placing a quantity of an infiltration metal over the powdered metal, placing the tubular mold base in a furnace at a temperature sufficient to melt the infiltration metal without melting the powdered metal, and removing the ceramic member from the first open end of the tubular mold base to expose the critical surfaces. The quantity of the infiltration metal is sufficient to fill voids between the particles of the powdered metal when the infiltration metal is melted, thereby generating a fully dense metal part. The metal part has the critical surfaces transferred from the ceramic member when the infiltration metal solidifies. The metal powder also acts as a filter to filter out any contamination or oxidized metal within the infiltration metal so that such contamination does not blemish the finished surface of the fully dense metal part.

    摘要翻译： 一种构造完全致密的金属部件或金属半模以与另一半模配合以形成用于铸造多个部件的模具的方法。 步骤包括将图案放置在管状模具基座中，将陶瓷构件放置在图案的临界表面上，从模具基底移除图案，用熔化温度大于其的熔融温度覆盖转移到陶瓷构件的粉末状金属的临界表面。 的浸渗金属，将一定数量的渗透金属放置在粉末金属上，将管状模具底座放置在炉中，其温度足以熔化渗透金属而不熔化粉末金属，并且从第一开口端去除陶瓷构件 以暴露关键表面。 当渗透金属熔化时，渗透金属的量足以填充粉末状金属颗粒之间的空隙，从而产生完全致密的金属部分。 当渗透金属固化时，金属部件具有从陶瓷构件转移的临界表面。 金属粉末还用作过滤器以过滤渗透金属中的任何污染物或氧化金属，使得这种污染物不会使完全致密的金属部件的成品表面发生瑕疵。

    Method of constructing fully dense metal molds and parts
    4.
    发明授权
    Method of constructing fully dense metal molds and parts 失效
    构建完全致密的金属模具和零件的方法

    公开(公告)号：US5927373A

    公开(公告)日：1999-07-27

    申请号：US799747

    申请日：1997-02-12

    申请人： James R. Tobin

    发明人： James R. Tobin

    IPC分类号： B22C7/02 ,  B22C9/04 ,  B22C9/06 ,  B23H1/04 ,  B23H1/06 ,  B29C33/38

    CPC分类号： B23H1/04 ,  B22C7/02 ,  B22C9/04 ,  B22C9/06 ,  B23H1/06

    摘要： A method of constructing a fully dense metal part or a metal mold half for matin with another mold half to form a mold for casting multiple parts. Steps include placing a pattern having critical pattern surfaces in a flask having an open end. The critical pattern surfaces face upward. Other steps involve covering the critical pattern surfaces with a concentrated heat reversible gel solution added to the flask, and cooling the gel solution to form an elastic solid gel mold. Further steps include removing the flask and the pattern from the elastic gel mold, and casting a ceramic mold around the solid gel mold. In other steps the gel mold is liquified for removal from the ceramic mold and the ceramic mold is inverted so that its critical ceramic surfaces face upward. Still other steps involve covering the critical ceramic surfaces with a powder, and placing a quantity of an infiltration material over the powder, and placing the ceramic mold, the powder, and the infiltration material in a furnace at a temperature sufficient to melt the infiltration material without melting and sintering the powder. The quantity of the infiltration material is sufficient to fill voids between the particles, thereby generating a fully dense mold half.

    摘要翻译： 一种用另一半模构造完全致密的金属部件或金属半模的方法，以形成用于铸造多个部件的模具。 步骤包括将具有关键图案表面的图案放置在具有开口端的烧瓶中。 关键图案面朝上。 其他步骤包括用加入烧瓶的浓热可逆凝胶溶​​液覆盖临界图案表面，并冷却凝胶溶液以形成弹性固体凝胶模具。 进一步的步骤包括从弹性凝胶模具中取出烧瓶和图案，以及在固体凝胶模具周围浇铸陶瓷模具。 在其他步骤中，凝胶模具被液化以从陶瓷模具中取出，并且陶瓷模具被倒置，使得其临界陶瓷表面朝上。 还有一些步骤涉及用粉末覆盖临界陶瓷表面，并将一定数量的渗透材料放置在粉末上，并将陶瓷模具，粉末和渗透材料放置在炉中，其温度足以熔化渗透材料 不熔化并烧结粉末。 渗透材料的量足以填充颗粒之间的空隙，从而产生完全致密的半模。

    Method and system for optimizing refill amount for automatic refill of a shared virtual postage meter
    5.
    发明授权
    Method and system for optimizing refill amount for automatic refill of a shared virtual postage meter 有权
    用于优化共享虚拟邮资计费器自动重新填充的补充金额的方法和系统

    公开(公告)号：US06823321B2

    公开(公告)日：2004-11-23

    申请号：US09952543

    申请日：2001-09-14

    申请人： Robert J. Johnson ,  Fuming Ye ,  Manu Sarin ,  Thomas Shokite ,  James R. Tobin

    发明人： Robert J. Johnson ,  Fuming Ye ,  Manu Sarin ,  Thomas Shokite ,  James R. Tobin

    IPC分类号： G07B1700

    CPC分类号： G07B17/00435 ,  G07B2017/00056 ,  G07B2017/00064

    摘要： A method and system for dynamically optimizing the amount of an automatic refill of a shared virtual postage meter is disclosed. A desired time between refills is predetermined based on the capacity of the system to perform refills, the time required to process a refill, and the impact of performing a refill on the overall performance of the system. A refill amount candidate is then determined based on the predetermined desired time between refills, the elapsed time since the last refill and the amount of the last refill. The determined refill amount candidate is then further validated to insure that it falls within a range of a predetermined minimum and maximum refill amounts. Once validated, the refill amount candidate is the optimal refill amount, and the shared virtual postage meter is refilled accordingly.

    摘要翻译： 公开了一种用于动态优化共享虚拟邮资计费器的自动重新充值的方法和系统。 重新填充之间的期望时间是基于系统执行再填充的能力，处理再填充所需的时间以及执行再填充对系统的整体性能的影响而预先确定的。 然后根据再填充之间的预定期望时间，自上次再填充之后的经过时间和最后一次填充量来确定再填充金额候选。 然后进一步验证所确定的补充金额候选者以确保其落入预定的最小和最大补充量的范围内。 一旦验证，补注金额候选者是最佳补充金额，并且相应地重新填充共享的虚拟邮资计费器。

    Real-time rheology measurement sensor
    6.
    发明授权
    Real-time rheology measurement sensor 失效
    实时流变测量传感器

    公开(公告)号：US5131265A

    公开(公告)日：1992-07-21

    申请号：US658809

    申请日：1991-02-22

    申请人： James R. Tobin ,  Robert W. Pennisi ,  Frank Starsky

    发明人： James R. Tobin ,  Robert W. Pennisi ,  Frank Starsky

    IPC分类号： B29C45/76 ,  G01F1/28 ,  G01N11/10 ,  G01N33/44

    CPC分类号： B29C45/7646 ,  G01F1/28 ,  G01N11/10 ,  G01N33/44

    摘要： A sensor (18) for measuring the rheology of materials is provided, comprising a deformable beam (20) simply supported at two locations (21 and 22). The beam has supported and unsupported portions, with the unsupported portion (28) extending beyond the supported portion. A strain gauge (23) is attached to the supported portion of the deformable beam (20), and measures the induced strain on the beam when the unsupported portion (28) is deflected by a moving material.

    摘要翻译： 提供了一种用于测量材料流变性的传感器（18），其包括简单地支撑在两个位置（21和22）处的可变形梁（20）。 梁具有支撑和未支撑的部分，其中未支撑部分（28）延伸超过被支撑部分。 应变仪（23）附接到可变形梁（20）的支撑部分，并且当未被支撑部分（28）被移动材料偏转时，测量梁上的感应应变。

    Low profile vehicle escape hatch assembly
    8.
    发明授权
    Low profile vehicle escape hatch assembly 有权

    公开(公告)号：US06540288B1

    公开(公告)日：2003-04-01

    申请号：US10010922

    申请日：2001-11-08

    申请人： James R. Tobin

    发明人： James R. Tobin

    IPC分类号： B60J700

    CPC分类号： B60J7/1642 ,  Y10T29/49826 ,  Y10T29/49881

    摘要： An escape hatch assembly mountable in an opening in the roof of a vehicle which includes a frame member having an egress opening defined by upstanding side walls that are arranged to extend upwardly into the opening in the roof of the vehicle, a flange member extending outwardly from the lower portion of said frame member and arranged to abut the inside surface of the roof of the vehicle; and attachment elements for securing the flange member to the inside surface of the roof of the vehicle. A method of installing the escape hatch upwardly through an opening the roof of a vehicle is also disclosed.