Abstract: A rising stem plug valve has a valve body housing that receives a plug. A handle assembly is attached to the plug for rotational movement of the plug between operative positions. A control assembly is attached to the plug for unseating and seating of the plug within the valve body. The plug includes at least one plug portion having openings corresponding to an interior configuration. Ring cords substantially surround the openings in the plug to create a seal therearound. The plug may include upper and lower plug portions with an untapered portion located between them. An O-ring is located on the untapered portion of the plug to maintain separation between the upper and lower plug portions.

Abstract: Binoculars, a telescope, or the like, having a removable strap, wherein

Abstract: A rising stem plug valve has a valve body housing that receives a plug. A handle assembly is attached to the plug for rotational movement of the plug between operative positions. A control assembly is attached to the plug for unseating and seating of the plug within the valve body. The plug includes at least one plug portion having openings corresponding to an interior configuration. Ring cords substantially surround the openings in the plug to create a seal therearound. The plug may include upper and lower plug portions with an untapered portion located between them. An O-ring is located on the untapered portion of the plug to maintain separation between the upper and lower plug portions.

Abstract: A rising stem plug valve has a valve body housing that receives a plug. A handle assembly is attached to the plug for rotational movement of the plug between operative positions. A control assembly is attached to the plug for unseating and seating of the plug within the valve body. The plug includes at least one plug portion having openings corresponding to an interior configuration. Ring cords substantially surround the openings in the plug to create a seal therearound. The plug may include upper and lower plug portions with an untapered portion located between them. An O-ring is located on the untapered portion of the plug to maintain separation between the upper and lower plug portions.

Abstract: A device for filtering and disinfecting a fluid, such as waste water, is provided. The device includes a housing having an interior and a fluid inlet conduit in flow communication with the interior of the housing. An ozone source is in flow communication with the interior of the housing. Additionally, a method of filtering and disinfecting a fluid is provided. Filter media is introduced into a housing to form a filter bed. The fluid to be filtered is directed into the housing such that the fluid flows through the filter media to form a filtrate. Ozone is directed into the housing such that the ozone contacts and disinfects the filter media and the filtrate.

Abstract: A water purification system is disclosed using a recirculation loop to extract water from a vessel, injecting ozone into the extracted water and then introducing the water/ozone mixture into the vessel to blend the ozone with all of the water in the vessel.

Abstract: A silver reclamation system for use with photographic solution. The silver reclamation system includes a body containing a plurality of metallic members positioned within a flow chamber and a metallic mesh contained within the body. The photographic solution contacts the plurality of metallic members and the metallic mesh material thereby causing silver contained within the photographic solution to plate these members. Also, the metallic members cause silver in the photographic solution to crystallize. The crystallized silver can then be contained within a filter for processing.

Abstract: A fluid filter assembly having a body with a chamber for receiving a filter element supported by the body. At least one cleaning device is positioned adjacent the inlet side of the filter element. The cleaning device includes a hollow duct for collecting dislodged particulate matter, an adjustable scraper or brush and a deflector substantially equal in length to the scraper or brush. Nozzles may be provided for directing pressurized cleaning fluid toward the cleaning device.

Abstract: A fluid filter assembly having a body with a chamber for receiving a filter element supported by the body. At least one cleaning device is positioned adjacent the inlet side of the filter element. The cleaning device includes a hollow duct for collecting dislodged particulate matter, an adjustable scraper and a deflector substantially equal in length to the scraper. Nozzles may be provided for directing pressurized cleaning fluid toward the cleaning device.

Abstract: A position sensor has a ring of a material of high permeability that is floated on a liquid within a hermetically sealed toroid, so as to hold the ring in a horizontal position. Exciting coils are distributed uniformly about the ring to enclose the cross section thereof, and receiving coils are distributed uniformly about the circumference of the ring.

Abstract: A backwash strainer including a body, a strainer element having an inlet side contained in the body, and a space defined between the body and the strainer element. The body includes an inlet to the strainer element and an outlet from the annular space. A nozzle for directing cleaning fluid against the inlet side of the strainer element for dislodging particulate matter from the inlet side of the strainer element mounts to the body. A backwash arm for collecting the cleaning fluid and dislodging particulate matter mounts to the body. The backwash arm is positioned adjacent to and is in close proximity to the inlet side of the strainer element and the nozzle. The backwash arm has an axially extending slot defined by two spaced members having ends positioned adjacent to the nozzle. The backwash arm and the nozzle together may be moveable about a central axis relative to the strainer element.

Abstract: A backwash strainer having a generally cylindrical filter element made up of a stack of spaced rings that are triangular in cross section, with the bases of said triangular rings disposed in a cylindrical surface. A hollow backwash arm has an open slot disposed on the inside of the cylindrical surface which operates at a predetermined distance from said element. The incoming water in said strainer flows from the inlet up through the straining element to the outlet. The backwash arm receives water from around the straining element, which flows through the element into the backwash slot and out with the debris accumulated on said strainer. Since the debris is supported on the flat interior of the rings, water flowing back into the arm into the slot in the hollow backwash arm forces trash and other debris from the rings down to the backwash water outlet. Water flowing through the clearance between the bars as used, helps flush the debris off the inside of the filter element.

Abstract: A system for superimposing additional information on the optical path of a telescope or binoculars is provided wherein the additional information is in the form of a slide or film strip containing a map sector and angle information which is out of the optical path. An arm containing optical elements can be swung into and out of the optical path to transmit the image contained on the slide or film strip to the optical path as desired. Rotation of the image can be achieved either by means of a thumb wheel connected to the slide holder whereby the slide itself can be rotated or by rotation of an optical prism assembly forming part of the optical elements in the arm.