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| Number | Title | Issue Date |
| 4174858 | Connection for securing a helically convoluted hose to a hose fitting A connection for securing one end of a helically convoluted suction hose to a hose fitting such as is used to effect rapid engagement of the hose with or disengagement thereof from the suction inlet of a vacuum cleaner. The fitting includes a tubular port... | 11/20/1979 |
| 4173989 | Prest-O-Fit universal adapter fitting A conventional, flexible sewer drain hose from recreational vehicles, is normally connected to the most common public or private sewer systems, by means of one of many different adaptor fittings, or by means of one fitting utilizing movable or mechanical ... | 11/13/1979 |
| 4154466 | Pipe section and coupling A pipe section is provided having means on the end thereof for use in assembly in the section in series in a pipe system. The pipe section has a compressible seal mounted in a groove in the end. A frusto-conical shaped seal surface is formed on the interi... | 05/15/1979 |
| 4108202 | Ball cock having vertically adjustable outlet tube An end of an inlet tube communicates through a tank wall with a water supply and an inner end of the inlet tube communicates through a float controlled valve with a generally vertically downwardly extending outlet tube. Thus, the tank water level through ... | 08/22/1978 |
| 4099744 | Snap-in swivel end fitting A flexible vacuum cleaner hose is provided with a simple and inexpensive end fitting for use with various vacuum cleaner accessories and attachments. The hose is a corrugated plastic, i.e., it has annular rings or corrugations formed therein. Each section... | 07/11/1978 |
| 4093280 | Synthetic resinous pipe joint made up in one-piece with a metallic male screw A pipe joint for connecting heterogeneous pipes is disclosed, wherein the one end, which is provided with a metallic male screw, forms a connecting portion with metallic wares, and the other end, which is molded of synthetic resin, constitutes another con... | 06/06/1978 |
| 4061368 | Coupling for spiral drain pipe A coupling for joining spiral underground drainage pipes includes a cylinderical body with an inner circumferential flange and locking projections. When the coupling is rotated on to the drainage pipes the ends of the pipes are held flush on the flange an... | 12/06/1977 |
| 4060264 | Swivel conduit coupling assembly The present invention provides a coupling member for joining two generally coaxial, tubular members such as an electrical conduit. The coupling member includes internal left hand threads at one end and internal right hand threads at the other end with an ... | 11/29/1977 |
| 4040756 | Drill rod thread form A thread structure for use in coupling percussion drilling extension rods minimizes the torque necessary to disconnect such extension rods. This is accomplished by beveling the crest portions of the cooperating thread structures. The direction of the beve... | 08/09/1977 |
| 4033615 | Port thread A method and construction for the formation of an internal thread for fluid or other ports which may receive NPT, BSP tapered, or BSP parallel external threads. The port configuration varies with different nominal tube bore diameters, but comprises one or... | 07/05/1977 |
| 4033167 | Process for forming intermediate metal conduit A forming technique is disclosed for intermediate metal conduit so as to make it compatible with electrical fittings that are usually employed with conventional rigid conduit.... | 07/05/1977 |
| 4028796 | Method of making a blast joint The present application discloses and claims the method of producing a blast joint for oil well production tubing. The method disclosed and claimed herein relates to assembling, upon the exterior of a length of production tubing, a stack of short length r... | 06/14/1977 |
| 4022287 | Percussion drill bit The invention relates to a drill bit for use in percussion drilling. The drill bit has a solid bit body, has cutting members on its face and a centrally disposed rod-receiving hole in its rear portion. The hole has, in part, a conical internal surface and... | 05/10/1977 |
| 3940168 | Tube and fitting structure A structure for providing a high pressure, fluidtight juncture between a tube or tubing and a fitting or body member in which a bore is provided in the fitting. The bore has a non-circular interior wall adjacent its opening and a threaded wall of lesser d... | 02/24/1976 |
| 3930666 | Hybrid gas system for automobile passenger restraint system A hybrid system is described for inflating an automobile passenger restraint bag. Part of the gas for inflating the bag is stored in a high pressure gas reservoir. Another portion is generated by combustion of a pyrotechnic mixture. In a preferred embodim... | 01/06/1976 |
