William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7383649 | Vehicle license plate frame A transparent vehicle license plate frame has an elastomeric gasket. The frame includes a periphery and an inner side for disposal adjacent to a license plate. The elastomeric gasket is disposed on the inner side near the periphery of the frame and is injection-mold... | 06/10/2008 |
| 7341210 | Nozzle cap for sealing nozzle particularly used to charge with high pressurized fluid A nozzle cap is disclosed which is threadedly engaged with a distal end of a nozzle through which a compressed fluid is passed. The nozzle cap includes a terminal wall opposed to a distal end face of the nozzle axially with respect to the nozzle, a sealing member pl... | 03/11/2008 |
| 7118140 | Compliant sealing connection for fuel components A fuel communicating assembly including a base having a wall disposed about a longitudinal axis. The wall having a surface exposed to the longitudinal axis. The surface defining a chamber. The wall having an end that defines an aperture to the chamber. The assembly ... | 10/10/2006 |
| 6994356 | Gasket seal for flanges of piping and equipment, a method for manufacturing gasket seals, and a sealing ring for a gasket seal A gasket seal for piping and equipment flanges comprises a sealing ring and a centralization ring, preferably concentric rings made of a metallic alloy. The sealing ring has an outer contour surface having a substantially L-shaped cross-section comprising an innermo... | 02/07/2006 |
| 6948718 | Gasket An annular gasket for affecting a watertight seal between two sections of corrugated pipe. The gasket comprises a seating portion dimensioned to fit within an annular recess in one of the mated sections of corrugated pipe, and a sealing portion integrally molded wit... | 09/27/2005 |
| 6722665 | MESC seal, O-ring carrier A sealing assembly is provided for sealing retractable opposing planar surfaces of processing modules each having sealable cavities for the fabrication of semiconductor wafers. The sealing assembly may include an inner frame adapted to be concentrically positioned w... | 04/20/2004 |
| 6669205 | Retainer gasket with pressure relief vents A gasket for interposition between a first and an opposing second interface surface of a sealing assembly. The gasket includes a retainer and a generally annular seal element received in a groove formed into at least one side of the retainer. Such retaine... | 12/30/2003 |
| 6419282 | Compliant zero evaporative fuel connection A fluid assembly is disclosed. The fluid assembly includes a first conduit having a generally annular first body and a first longitudinal channel extending therethrough and a second conduit having a generally annular second body disposed over a portion of... | 07/16/2002 |
| 6290238 | Gasket for use with an air brake hose coupling member The gasket is for use in detachably connecting two similar coupling members on the ends of air brake hoses for railroad cars to form an airtight connection. The gasket provides a ramped entrance angle and a wide sealing surface for providing better alignm... | 09/18/2001 |
| 6024363 | Gasket for use with an air brake hose coupling member A gasket with a ramped entrance angle and a wide ceiling surface is provided for better alignment and sealing during coupling with another similar gasket. The gasket is for use in detachably connecting two similar coupling members on the ends of railroad ... | 02/15/2000 |
| 5240311 | Glad hand seal A seal for use in fluid couplings, such as those utilized in compressed air braking systems for tractor trailers and the like, has a lower portion, an intermediate portion, and an upper portion. The outer diameter of the intermediate portion is less then ... | 08/31/1993 |
| 5131667 | Hose coupling gasket An improved hose coupling gasket in which the standard gasket retaining flange is modified to include an additional sealing bead strategically formed on the upper surface of the flange such as to engage the adjacent surface of the gasket retaining groove ... | 07/21/1992 |
| 4658326 | Hose coupling The present invention relates to a high impact hose coupling having a hollow body constructed of plastic, a helical restriction means to hold the hose end within the coupling body, a double locking means for locking coupling halves together, and a static ... | 04/14/1987 |
| 4502701 | Sealing assembly in fluid coupling A compound sealing ring for fluid couplings comprises an annular resilient seal member having front and rear ends between which extends a circumferential annular groove, and an annular rigid reinforcement member inserted over the front end of the sealing ... | 03/05/1985 |
| 4077656 | Sealed joint and gasket therefor A joint between two members and a gasket therefor. The members have transverse annular opposed faces. The gasket is a ring having a base and a frusto-conical lip extending radially inward from the base. The base is adapted to be clamped between the two fa... | 03/07/1978 |