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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 |
| 7419591 | Filter cartridge with check valve protection A filter assembly is provided that includes a hood, a drain manifold, a filter disposed between the hood and the drain manifold, a drainage space that is disposed between and in fluid communication with both the filter medium and the drain manifold, a check valve th... | 09/02/2008 |
| 7347338 | Method for closing and opening of an opening A method for opening an opening (10) using an elastic plug (2, 2′) whose outside diameter in a static state (rL), is larger than diameter (rp) of opening (10), and which plug has a cavity (12) at its end. An extend... | 03/25/2008 |
| 6796449 | Closure for containers, in particular plug for bottles A closure for containers having an opening, comprising substantially rigid supporting and sealing means for insertion in a container opening, and a covering body made of flexible and resilient plastic material which covers at least a portion of and is connected to t... | 09/28/2004 |
| 6296136 | Obturator with improved retention in a metal sheet aperture An obturator for an aperture (8) produced in a metal sheet (9) has a central dome (1), a peripheral lip (3) and an annular part (3) extending between the dome (1) and the lip (2). The annular part (3) has a shoulder (4). The dome (1) is adapted to deform ... | 10/02/2001 |
| 6183982 | Fermentation bung device and method A fermentation device and a method for making a substance using the device are provided. The fermentation bung may have an outer plug that includes a central inner annular hole and a one or more holes surrounding the central hole, the outer plug fitting w... | 02/06/2001 |
| 6161716 | Closure with a pressure compensation valve for a liquid container The closure has a bung-type socket (10) of soft elastic material with a flange-like outer bearing portion (12), a circumferential sealing portion (16) sealingly receiving the rim of the hole, and a circumferential snap-action portion (18) engaging the ins... | 12/19/2000 |
| 5740935 | Bung hole plug A bung hole plug formed of resilient synthetic material interfitted between a front and back plate. A threaded post is attached to the back plate, and used, in conjunction with a lock washer and nut, to draw the front and back plates together, thereby squ... | 04/21/1998 |
| 5454479 | Closure cover A plastic closure cover for closing a collet opening in the body of a motor vehicle comprises a dish-shaped part 2 including a bottom 3 and a cylindrical side wall 4 whose outer surface is equipped with contact elements 5. The contact elements are designe... | 10/03/1995 |
| 5353472 | Grommet/plug A main member of soft plastic material and a second member of hard plastic material, chemically compatible and thermally bonded together. The second member is partially slitted having a ring element embedded in the main member, and segments distributed ci... | 10/11/1994 |
| 5327942 | Sealing plug for apertures A resilient plug for sealing drilled holes in a solid surface to prevent the discharge from the hole of fluids or chemicals. The plug is of tubular shape and has a flat top surface and a tubular side wall from which a plurality of sealing ribs project to ... | 07/12/1994 |
| 4826029 | Stopper and method of use in association with wine barrels In accordance with the invention a frustoconically shaped stopper formed of silicone rubber approved by the FDA for use in wine making (such as methylvinylpolysiloxane elastomers) can be releasably sealed to a wine barrel, but still provide for sampling o... | 05/02/1989 |
| 4287996 | Flexible closures and closure for bung openings The problem of providing tight-fitting closures for containers is solved by the closures and the methods of installing and removing closures utilizing a closure (20) which includes a central portion (21) and an annulus portion (22) hingedly connected to t... | 09/08/1981 |
| 4202463 | Stoppers for pressure containers A stopper for a pressure container comprises a hole fitting and an inner core for sealing engagementin a generallycylindrical inner bore of the hole fitting. The hole fitting has an annular external groove for receiving a generally circular edge of the co... | 05/13/1980 |
| 4046168 | Closure plugs In order to avoid the necessity of having a range of sizes of tools for the mounting and removal of a plurality of resiliently deformable plugs of different transverse dimensions on the ends of associated tubes, there is provided a plurality of such plugs... | 09/06/1977 |
| 4034888 | Can for containing beverages Metal can for containing a beverage, comprising an end provided, near its edge, with an opening closed by a leakproof capsule retractable to the inside of the can. The opening is extended by a tubular element turned towards the interior of the can and the... | 07/12/1977 |
| 3982649 | Bung for a barrel A bung for the bung orifice of a pressurized beer barrel and the like including an outer shell having an external wall surface adapted for sealing engagement with the wall of the bung orifice and a closure head extending radially inwardly from an attachme... | 09/28/1976 |
