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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7278258 | Floating flexible firewall seal A seal assembly is provided for sealing an interface between a shaft and a bore formed in a firewall, where the shaft has an annular foot extending radially outward therefrom and a flowpath extending therethrough in fluid communication with the bore. The assembly in... | 10/09/2007 |
| 7260942 | Method of sealing joints of pipelines and containers operating with cryogenic fluids The invention relates to methods of sealing of pipeline joints operating with cryogenic liquids. The method is realized with the use of a tape of a porous structuring material that may be dry or impregnated with a liquid having a freezing point above the temperature... | 08/28/2007 |
| 7213813 | Metal gasket A metal gasket with a hole to be sealed includes first and second metal base plates laminated together. The first metal base plate has a first main bead around the hole, and a first outer sub-bead section smaller than the first main bead and provided outside the fir... | 05/08/2007 |
| 7201241 | Self relieving seal Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal... | 04/10/2007 |
| 7178809 | Roof weather strip for convertible car A roof weather strip for use in a convertible car is composed of a plurality of weather strip pieces corresponding to the folding of a sliding roof thereof. When the sliding roof is unfolded to form a roof of the convertible car, longitudinal end parts of adjacent r... | 02/20/2007 |
| 7150164 | Finger ring fit adjuster A tubular bladder has an outside wall connected to an inside surface of a finger passage through a band of a finger ring. An inside wall of the bladder is integral with the outside wall and forms a gas chamber. A passage connects the gas chamber to a source of air. ... | 12/19/2006 |
| 7137756 | Fluid-tight bell-and-spigot-joint for box culverts A box culvert and gasket assembly is provided that enables fluid-tight bell-and spigot joints to be formed between abutting ends of box culverts. The joints according to the assembly of the present invention can remain fluid-tight up to at least 13 psi of water pres... | 11/21/2006 |
| 7131649 | Metal gasket A metal gasket is formed by first and second metal base plates. The first metal base plate has a first main bead, and first outer and inner sub-bead sections formed outside and inside the first main bead and projecting outwardly in a direction opposite to the first ... | 11/07/2006 |
| 7086608 | Shaft seal with grease retainer A seal arrangement for a rotatable shaft that is secured at one end thereof in a housing, and that mounts a water distribution plate on an opposite end thereof, the shaft seal comprising a flexible annular member having a radially inner portion including at least on... | 08/08/2006 |
| 6976548 | Self relieving seal Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal... | 12/20/2005 |
| 6966559 | Sealing bellows with lubricant reservoir at axial end and assembly/installation method A process for forming the ball and socket joint with bellows seal (10), a bellows seal (10) and a ball and socket joint with bellows seal (10) is provided including a ball pivot pin (36, 38) with a connection piece (40). The sealin... | 11/22/2005 |
| 6948715 | Seal assembly with accumulator ring A seal assembly with an accumulator ring for protecting a seal from explosive decompression is disclosed. The accumulator ring and the seal are contained within a seal gland. The seal is made of a material that is susceptible to damage from explosive decompression. ... | 09/27/2005 |
| 6921090 | Diaphragm for sealing openings in pressure vessels An improved diaphragm for use with a gasket to prevent leakage of a pressurized fluid. The diaphragm has an internal groove which uses strong spring back and the pressure of the fluid to increase the gasket seating load, thereby providing a self-energizing seal whic... | 07/26/2005 |
| 6918986 | Method and apparatus for trimming plastic seams Method and apparatus for trimming plastic frames. Frames are joined to bring heated, soften ends into engagement, causing some softened material to be forced out from between the engaged portions, forming a flashing. This flashing is trimmed by a pair of trimming bl... | 07/19/2005 |
| 6843516 | Coupler for low pressure piping system A coupler for a low pressure piping system has a hollow metal tube terminating in a pair of end portions defining open ends for slidably receiving and joining together sections of other metal tubes in a substantially air tight relationship. Slots are formed in at le... | 01/18/2005 |
| 6827354 | Sealing system on a structural element, said system having a through-opening that can be closed and method for applying same A sealing system on a first structural element having a first through-opening, including a first closing flap rotatable about an axis for closing the first through-opening. The sealing system can be coupled to a second structural element. The first closing flap is p... | 12/07/2004 |
| 6719302 | Symmetrical gasket for a pipe joint with increased surface contact A gasket for a pipe joint includes an annular gasket body which is symmetrical around an axial centerline and is therefore insensitive to axial orientation. The gasket is formed of a resilient material and includes a base adapted to sealingly engage an annular groov... | 04/13/2004 |
| 6708986 | Device and method for ducts sealing This invention relates to a device a metod for ductchs sealing composed by a sealed bag, with no valve and or accesses, divided by a separator device wich can be un-welded before the application, containing separated chemical substances able to react and generate ga... | 03/23/2004 |
| 6581938 | Flexible seal forming member A seal apparatus including an elongated body formed of a resilient expandable material defining an interior chamber and having a longitudinal axis. The elongated body is capable of being rolled up on itself by rolling one of the first and second ends of t... | 06/24/2003 |
| 6572118 | Flexible seal member for non-metallic conduit to concrete manhole junction A sealing member for sealing a joint between a pipe and a wall defining an opening is provided. The sealing member has an annular base, a projection, and preferably first and second annular flanges. The annular base has a bottom and first and second sidew... | 06/03/2003 |
| 6550776 | Intermediate metallic layer for flat packing and process for the production of a flat packing with such an intermediate layer A vacuum packing configuration and installation for use therewith, has a first part and a second part. The first part includes a hydraulically or pneumatically expandable, medium-tight volume adapted to be acted upon by an hydraulic or pneumatic medium, w... | 04/22/2003 |
| 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 |
| 6439580 | Sealing element for pipelines The invention relates to a sealing element (1) with inflatable bellows (10) for sealing piping. Said sealing element can be e.g. cylindrical in shape and said bellows (10) can be provided with two recesses (14a, 14b) containing a gel (11). When the bellow... | 08/27/2002 |
| 6402155 | Sealing grommet, and methods of assembling said grommet and forming a waterproof seal between wires of a wire harness within said grommet A sealing grommet is provided that includes a grommet body with a sealant reservoir and a sealant drain portion. The grommet body has an outer peripheral wall, a panel engagement recess formed on the outer peripheral surface of the outer peripheral wall, ... | 06/11/2002 |
| 6383610 | Self-sealing partition A partition for forming a barrier in a channel has a molded resin-based plate and a plurality of thermally expandable pellets attached to one side of the plate. The partition is secured in place in the channel by mounting brackets. As heat is applied, a b... | 05/07/2002 |
| 6354596 | Post-tension anchor seal cap A seal cap (10) for use in sealing an end (20) of a tendon (14) anchored to an anchor plate (12). The seal cap (10) includes a receptacle (32) for holding therein a sealing agent (37). The seal cap (10) further includes a push nut (34) that grips to the t... | 03/12/2002 |
| 6343796 | Gasket arrangement A gasket arrangement for sealing between first and second components includes a tube through the material of the gasket for transferring fluid through the gasket. The first and second components may be, for example, a transmission case and transmission fl... | 02/05/2002 |
| 6328310 | Method of preventing water leakage with waterproof seal A method of preventing water leakage which comprises the steps of interposing a waterproof seal which consists of a hollow, water-absorbing, swelling rubber piece covered with a fabric tube in a clearance between the ends of pipes or planks to be joined t... | 12/11/2001 |
| 6264207 | Seal with cavities A seal using a seal body (1) which is subdivided in a latticework-like fashion into tensile struts (6) and compressive struts (7), forming cavities (8), and has an introduction portion (4) and can thus be used as a primary seal. The seal body (1) can be p... | 07/24/2001 |
| 6250646 | High pressure-high temperature pipe gasket A high pressure-high temperature gasket for high pressure-high temperature pipe is disclosed. The high pressure-high temperature gasket comprises a hollow annular member defining an interior tunnel. The interior tunnel is filled with a stuffing to enhance... | 06/26/2001 |
| 6199870 | Seal A seal for a shut-off device moved in a rectilinear manner, which is switched from a closed to an open position and vice versa so as to shut off material flows. The seal is formed of metallic components which define a pressure chamber to which external pr... | 03/13/2001 |
| 6182973 | Intermediate metallic layer for flat packing and process for the production of a flat packing with such an intermediate layer A vacuum packing configuration and installation for use therewith, has a first part and a second part. The first part includes a hydraulically or pneumatically expandable, medium-tight volume adapted to be acted upon by an hydraulic or pneumatic medium, w... | 02/06/2001 |
| 6122870 | Stack ban A stack ban for sealing a pipe and boot extending from a roof of a building is disclosed. The stack ban includes a band of flexible material having a smooth inner surface and an outer surface. The inner surface has a circumference substantially equal to a... | 09/26/2000 |
| 6105945 | Inverted strut damper An inverted strut damper includes an external cylinder which has an expanded midsection and a vertically moveable damper tube arranged concentrically within the outer cylinder. The outer cylinder and tube arrangement form a lubricating oil supply reservoi... | 08/22/2000 |
| 6103341 | Self-sealing partition A partition for forming a barrier in a channel has a molded resin-based plate and a plurality of thermally expandable pellets attached to one side of the plate. The partition is secured in place in the channel by mounting brackets. As heat is applied, a b... | 08/15/2000 |
| 6095207 | Sealing device for a filling opening and method for its control In a sealing device for a filling opening, especially for sealing it against the escape of fuel fumes when filling stationary or mobile supply tanks, a seal is located in the vicinity of the filling opening and abuts in a sealing fashion an object such as... | 08/01/2000 |
| 6003873 | J-tube seal The present invention relates to a method and device for sealing the entrance of an elongated element (1) into the lower end of an offshore tube (8), --including the steps of arranging a plug-like device (2) on the element, --pulling a predetermined lengt... | 12/21/1999 |
| 5997006 | Bidirectional gasket having water energizing pockets A bidirectional gasket providing a water-tight seal between a manhole assembly and a pipe, having a T-shaped anchoring portion for embedment in a manhole opening. An A-shaped pipe engagement portion joined to the anchoring portion by a connecting web faci... | 12/07/1999 |
| 5979909 | Environmental sealing The present description pertains to a duct seal, or splice case seal, or other sealing member which is an inflatable envelope having an opening directly through a wall of the envelope or between walls thereof through which a probe is inserted to introduce... | 11/09/1999 |
| 5971401 | Ring seal for apertures of multi-shelled structures, especially of underground operation With a ring seal for apertures of multi-shell structures, especially of underground operations, by which a tubular sealing element after insertion into the ring aperture between shells of the structure and after introduction of a filler material into the ... | 10/26/1999 |
