Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 5878993 | Shielded globe valve seal mechanism A globe valve is which uniquely shields and effects sealing compression of a soft seal (10) such the valve can be used to control and fully stop flow of fluids of a variety of extremes of pressure, temperature, corrosive capacity and erosive capacity or c... | 03/09/1999 |
| 4765591 | Gate valves A gate valve is provided having a valve body with a fluid passage therethrough and a riser passage at right angles to the fluid passage. A valve gate is included for opening and closing the fluid passage. A valve stem is operatively connected with the val... | 08/23/1988 |
| 4712769 | High temperature balanced valve trim The disclosure is directed to a seal forming means in a valve plug for use in a fluid control valve, particularly in high temperature and high pressure fluid applications. The valve plug of the invention generally comprises a main valve plug member and a ... | 12/15/1987 |
| 4249561 | Piston type cleaning valve A valve, comprising a body which forms a cylindrical flow channel defined by side walls and having a fluid inlet provided at one end of the channel and an outlet provided in the side wall of the channel, and a closing device which comprises a piston conne... | 02/10/1981 |
| 4209163 | Dump valve assembly A dump valve assembly for opening and fluid-tightly sealing the drain outlet of a waste tank, the assembly comprisng a rotatable elongated shaft having a handle at its upper end and a first or lower compression plate adjustably secured to its lower end. D... | 06/24/1980 |
| 4188675 | Conduit plug An improved lavatory drain plug includes a split hub structure, normally separated axially, upon which a cylindrical sealing member is mounted. Bringing the hub together exerts an outward radial force on the sealing member while the rim adjacent the hub e... | 02/19/1980 |
| 4144905 | Reversing valve construction and method of making the same A reversing valve construction having a housing provided with a chamber carrying a movable piston-like valve member therein that controls ports of a valve seat of the housing through the relative position of a cavity of the valve member relative to the po... | 03/20/1979 |
| 4136852 | Expansible plug valve A valve comprising a resiliently expansible and compressible plug movable in a valve chamber to open and close a flow passage intersected by the chamber. The plug has a sealing portion which is expanded outwardly against the walls of the chamber, e.g., by... | 01/30/1979 |
| 4089504 | Valve construction A valve having improved sealing means making use of a sealing member of resilient material which is compressed radially when the valve is closed. Compression causes the peripheral surface of the sealing member to be pressed into sealing engagement with a ... | 05/16/1978 |
| 4088301 | Valve arrangement for a vacuum line In a valve arrangement in which a metallic valve body has an edge portion elongated in a closed loop and can be moved into a position of sealing engagement over the entire length of the loop with a cooperating seating surface in a vacuum line, and the eng... | 05/09/1978 |
| 4027701 | Aircraft lavatory drain plug A plug for an aircraft lavatory drain port having a radially expandable portion and a resilient sealing member covering the expandable portion. A locking portion is connected for securing the plug in sealing position. The resilient sealing member includes... | 06/07/1977 |
| 3990677 | Expansible plug valve A valve comprising a resiliently expansible and compressible plug movable in a valve chamber to open and close a flow passage intersected by the chamber. The plug has a sealing portion which is expanded outwardly against the walls of the chamber, e.g., by... | 11/09/1976 |
| 3954123 | Aircraft lavatory drain plug A plug for an aircraft lavatory drain port having a radially expandable portion and a resilient sealing member covering the expandable portion. A locking portion is connected for securing the plug in sealing position.... | 05/04/1976 |
