Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7226022 | Cable duct coupler A cable duct coupler for coupling a first cable duct section to a second cable duct section without the need for tools, the cable duct coupler comprising a channel portion, a first outer guide element and a second outer guide element, a barb mount extending from at ... | 06/05/2007 |
| 7017615 | Protector A protector includes a main body, lids, hinges, and lock portions. The main body including a bottom wall, a first sidewall, and a second sidewall. The lids are coupled to the main body through the hinges. The lock portions are disposed between the lids and the main ... | 03/28/2006 |
| 6926807 | Insulated transition spool apparatus An insulated transition spool apparatus for mounting unheading devices to pressure vessels, such as coker vessels, and enabling repetitive operation thereof is disclosed. The apparatus comprises an outer housing, an inner housing that encloses an insulating space be... | 08/09/2005 |
| 6913291 | Threaded hose-in-hose coupler A hose-in-hose coupler having a primary or inner hose assembly and a surrounding secondary or outer hose assembly. The secondary hose assembly is connected by opposing retractable sleeves which when disconnected may by retracted or separated to expose the primary ho... | 07/05/2005 |
| 6712400 | Coupling member for use in fluid control apparatus and method of fabricating same A method for facilitating fabrication of a coupling member includes a first step of boring one of upwardly open, passageways, a communication passageway and an auxiliary passageway in a body block, a second step of inserting a closure member into the auxiliary passa... | 03/30/2004 |
| 6682102 | Hose-in-hose coupler A Hose-In-Hose coupler having a primary or inner hose assembly and a surrounding secondary or outer hose assembly. The secondary hose assembly is connected by slideable sleeves which when disconnected may by extended or separated to expose the primary hos... | 01/27/2004 |
| 6231704 | Apparatus for on-site installation of air duct system An insulated air duct apparatus including insulated duct modules and associated insulated fitting apparatus for transferring a volume of fluid in a warm air heating and air conditioning installation without employing external insulation or structural supp... | 05/15/2001 |
| 5913544 | Hinge system for a bracket system New articulated hinge elements are provided for bracket systems with a double-T shaped carrying profile designed for containing electrical cables supplying control equipment that permit the articulated connection between parts or elements of such bracket ... | 06/22/1999 |
| 5857715 | Pipeline branch arrangement A pipeline branch arrangement that forms a piggable-Y at the intersection with the trunkline and is oriented vertically relative to the trunkline. The approach piping to all legs of the piggable-Y are configured to incorporate 3D bend or larger radii as r... | 01/12/1999 |
| 5758908 | Oil cooler with improved coolant hose connection An oil cooler (16) including an oil cooler housing (22) and a coolant hose connection (24) for transferring a coolant flow between a coolant hose (28) and the oil cooler housing (22), wherein the hose connection (24) changes the direction of the coolant f... | 06/02/1998 |
| 5752690 | Threaded coupling and pig injector valve An improved threaded joint for connecting a first tubular member, for example a valve housing, with an outer end having interior threads with pitch W and terminating in a shoulder. A second tubular member has an exterior threaded end and a flanged end. A ... | 05/19/1998 |
| 5738386 | Lightweight pipe clamp A lightweight, portable clamping device assists in holding and reforming pipes in piping systems. The clamping device comprises a pair of semicircular clamp halves which are placed on the abutting ends of out-of-round pipe. The clamp halves are drawn toge... | 04/14/1998 |
| 5141256 | Double containment pipe assembly access housing An access housing is provided between segments of an outer containment pipe of a double containment pipe assembly through which the flanged ends of a primary pipe may be accessed with the ability to readily assemble and disassemble the inner piping system... | 08/25/1992 |
| 5058214 | Drain trap apparatus An apparatus including a "U" shaped drain trap, wherein the drain trap includes an upper section and a lower section, the lower section pivotally mounted to the upper section utilizing a hinge mounting the lower section to the upper section at one end the... | 10/22/1991 |
| 4789188 | Swivel or rotating joints A swivel joint for interconnecting two lengths of pipe, comprising an inner member (1) and an outer member (2), a chamber defined by the inner member (1) and the outer member (2) and accommodating bearing means (15a, 15b) locating the inner member (1) and... | 12/06/1988 |
| 4163572 | Transition fitting A pair of self-clamping couplings are secured to the opposite walls of a feeder duct. The ends of a pair of branch ducts are respectively supported on the couplings. A cover closes off the space between the branch ducts and is held in position by engageme... | 08/07/1979 |
| 4040449 | Oil-tight lay-in duct Lengths of lay-in ducts, each in the form of an open top trough having exterior connecting flanges at its ends, are connected together in end to end relation in a run by bolts passed through the flanges. Each trough is provided with a cover which terminat... | 08/09/1977 |
