Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7163028 | Multipurpose plumbing tool A multipurpose plumbing tool has a body at one end, a head at an opposite end and an intermediate neck portion connecting the body and head. The marginal end portion of the body is cut back to form a reduced section, a shoulder being formed at the junction of the re... | 01/16/2007 |
| 6481927 | Assembly and method for joining a drain pipe and a catch basin An assembly and method of joining a pipe with a catch basin, the catch basin having an apertured side wall, the assembly and method including providing an elastomeric ring having an annular hollow expansion space, a foam injection port, a flow checking in... | 11/19/2002 |
| 6213685 | Mechanical boot system A mechanical type boot including a vertically positioned riser in a tubular configuration with an outwardly flanged upper end and an outwardly flanged lower end. Vertical bolt holes are provided through the ends. Vertical bolt holes are provided in a lowe... | 04/10/2001 |
| 5079836 | Process and apparatus for producing connections between crankshaft parts A process and an assembly for producing force-locking connections between tubular members inserted one into the other or for attaching elements slid onto tubular members, by permanent radial expansion of several sleeves slid into the tubular members in a ... | 01/14/1992 |
| 5042846 | Method and system maintaining tightness between parts rotating in relation to one another A system for maintaining a tightness between two parts rotatable relative to each other. The system includes at least two sealing units, with each of the sealing units having at least two possible states or conditions, namely, a first state or condition f... | 08/27/1991 |
| 4915177 | Blast joint for snubbing installation A blast joint and related handling apparatus and method for installing the blast joint in a pressurized well, using a snubber unit. The blast joint has a pressure rated protective jacket, a pressure operated ring load compensator, and an adjustable tubing... | 04/10/1990 |
| 4858967 | High pressure hose fitting and method for sealing high pressure hoses to fittings A high pressure hose fitting, and method for sealing the hose to a fitting, is disclosed for use with hoses of the type including a linear disposed about an axially extending passageway, and a reinforcement layer circumventing the liner. The liner is pref... | 08/22/1989 |
| 4774872 | Prestressed tube and tube joint A joint is provided for joining together two sections of a tube wherein the sections are prestressed by a surrounding pressure medium to press the sections together and to resist forces tending to separate the sections and the bursting pressure inside the... | 10/04/1988 |
| 4688830 | Externally threaded quick connect coupling having integral fluid pressure assisted seal A quick connect coupling (20) for fluid tight connection to a threaded fluid port (22). A body (26) of the quick connect coupling (20) having a cylindrical, externally threaded first end (28) defining an axially extending passage (29) into the coupling bo... | 08/25/1987 |
| 4487435 | Swivel joint In a swivel joint which leads high-pressure liquid in a fixed pipe into a rotatable pipe coupled slidably to said fixed pipe, a lubricating chamber is provided in the neighborhood of sliding area between the fixed and rotatable pipes, and lubricant having... | 12/11/1984 |
| 4396212 | Rotary fluid coupling A rotary fluid coupling for conveying fluid from a stationary shaft to a hub rotatably mounted on the shaft, or vice versa. The coupling is characterized in having an annular piston which surrounds the shaft and which forms a wall of a chamber connecting ... | 08/02/1983 |
