公开(公告)号：US4923068A

公开(公告)日：1990-05-08

申请号：US306905

申请日：1989-02-07

Applicant: Francis R. Crowson

Inventor： Francis R. Crowson

IPC: B01D29/46 ,  B01D29/60 ,  B01D29/62 ,  B01D29/66 ,  B01D35/12 ,  B01D35/16 ,  B01D35/18 ,  B01D37/04

CPC classification number: B01D35/18 ,  B01D29/60 ,  B01D35/12 ,  B01D2201/088 ,  B01D2201/54

Abstract: A method and apparatus for automatically propelling a charge of backwash fluid by a compressed gas such as steam to backwash a filter in a filter pair. The method and apparatus provides for backwashing a filter with at least three backwash phases, a first mainly comprising a charge of backwash fluid passing through the filter with significant speed, a second relating to use of flashing steam for secondary cleaning and scrubbing of the filter elements, and a third relating to use of low pressure steam for autoclaving and sterilizing the filter.

公开(公告)号：US5045700A

公开(公告)日：1991-09-03

申请号：US399232

申请日：1989-08-29

Applicant: Robert H. Crowson ,  Francis R. Crowson

Inventor： Robert H. Crowson ,  Francis R. Crowson

IPC: G01T1/00 ,  G01T1/185 ,  G01T7/00 ,  G01T7/12 ,  G02C11/00 ,  G08B5/00 ,  G08B21/00

CPC classification number: G01T7/12 ,  G01T1/185 ,  G01T7/00

Abstract: A visual display for indicating a level of ionizing radiation is mounted on a portion of an item of headwear, such as safety goggles, at a position within the peripheral field of vision of a wearer. Such a display advises a wearer of a level of radiation, including warning levels, in real time without requiring activity on the part of the wearer. In one embodiment, an ionizing radiation detector, accompanying circuitry, and the visual display are mounted on the glasses, such as on the frame. In another embodiment, a commercially-available detector is used to provide an output from a location remote from the headwear to actuate the visual display on the headwear. Various circuit embodiments are also disclosed.

Abstract translation: 用于指示电离辐射水平的视觉显示器安装在诸如安全护目镜的头饰件的一部分上，位于佩戴者的周边视野内的位置。 这样的显示器可以实时地向穿戴者提供包括警告水平的辐射水平，而不需要佩戴者的部分活动。 在一个实施例中，电离辐射检测器，伴随电路和视觉显示器安装在眼镜上，例如框架上。 在另一个实施例中，市售的检测器用于提供远离头饰的位置的输出，以驱动头饰上的视觉显示。 还公开了各种电路实施例。

公开(公告)号：US5042679A

公开(公告)日：1991-08-27

申请号：US454383

申请日：1989-12-21

Applicant: Francis R. Crowson ,  Richard J. DiSalvo

Inventor： Francis R. Crowson ,  Richard J. DiSalvo

IPC: G21F5/12

CPC classification number: G21F5/12 ,  Y10S411/91

Abstract: Provision is made for a container which stores and shields radioactive material. Included in the container is an enclosure defining a hollow chamber in which radioactive material is storable. A closure assembly cooperates with the enclosure in such a manner that an internal plug thereof effects a preselected gas-impervious sealing engagement. The closure assembly includes a lug which is rotatable to urge the assembly into sealing engagement and which torsionally fails following achievement of the desired sealing engagement of the closure plug to thereby prevent the lug from being subsequently used to open the container. The container and closure members provides desired radioactive shielding.

Abstract translation: 经费用于储存和屏蔽放射性物质的集装箱。 包含在容器中的是限定中空室的外壳，放射性物质可以放置在该中空室中。 闭合组件以这样的方式与外壳配合，使得其内部插塞实现预选的气体不可渗透的密封接合。 闭合组件包括可旋转的凸耳，该凸耳能够将组件推动到密封接合中，并且在实现封闭塞的期望的密封接合之后扭转失效，从而防止凸耳随后用于打开容器。 容器和封闭构件提供所需的放射性屏蔽。