The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7338247 | Quick release fastener A releasable fastener for releasably engaging a bolt body has a generally cylindrical sleeve member having an inner surface closely spaced from an outer surface of the bolt body. A latch member having a contact surface is mounted on the sleeve member for movement be... | 03/04/2008 |
| 7322249 | Mounting for a probe sensor A robust, easy to mount probe sensor includes an elongated body enclosing a sensor element and an integral flange extending away from the body. The body and flange are formed of material having a relatively low characteristic yield point. First and second generally ... | 01/29/2008 |
| 7143614 | Computer physical security device An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment must have an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a ... | 12/05/2006 |
| 7063362 | Seal assembly for a cargo container A cargo seal assembly structured to maintain one or more doors on a cargo container in a closed and latched position comprising an elongated flexible material segment having a distal end, a proximal end and an intermediate portion extending therebetween. The flexibl... | 06/20/2006 |
| 7059019 | Locking device to prevent door removal A Locking Device To Prevent Door Removal (10) is provided to prevent theft of a type of door having a hinge pin fixedly attached to the door and a hinge bracket bolted to the door frame housing with bolt holes extending into the door frame housing. The device... | 06/13/2006 |
| 7018253 | Coupling lock for an engine and a boat hull A coupling lock for an engine and a boat hull installed on the fastening location thereof to provide coupling and locking functions includes a base dock and a upper dock. The base dock is fastened to a transom of the boat to couple with the engine and fasten to the ... | 03/28/2006 |
| 6935527 | Locking filler cap A lockable filler cap assembly for fuel tanks and other fluid-holding containers. The assembly is readily adaptable to function as a normally operating non-locking filler cap and to function as a locked filler cap. The lockable filler cap assembly includes a cap hav... | 08/30/2005 |
| 6892483 | Reversible locking license plate and registration sticker tag protection frame A reversible license plate frame is provided that will prevent theft of a license plate and the registration sticker. The reversible locking license plate and registration sticker tag protection frame of the present invention includes a license plate frame comprisin... | 05/17/2005 |
| 6886377 | Tree stand lock and associated method of use A device and method for locking an object to a tree. The device includes an eyebolt. The eyebolt is set into the tree proximate the object to be protected. A protective bracket is placed over both the eyebolt and the object. A hole is disposed in the protective brac... | 05/03/2005 |
| 6865914 | Threaded member lock A lock including a lock body, lock cylinder, a threaded member and an engagement member. The engagement member moves within the lock body to engage the threaded member in at least two different positions. One of the positions allows the lock threaded member to be ti... | 03/15/2005 |
| 6736652 | Electrical plug lock out apparatus and method A lock out apparatus including a plug having an electrical line extending therefrom and a generally tubular nose portion, a tubular body having an interior passageway removably receiving the nose portion of the plug therein, and a set screw extending through a wall ... | 05/18/2004 |
| 6726515 | Stern lock-outboard lock The invention is directed to dead bolt receiver lock that is installed in a boat between the transom and the clamp that mounts an outboard motor to the boat. The dead bolt prevents the unauthorized removal of the outboard motor from the boat. To this end, there is u... | 04/27/2004 |
| 6560999 | Column lock device A heavy duty steering wheel securing anti-theft device. Embodiments are described herein that also protect any air bag contained in the steering wheel.... | 05/13/2003 |
| 6546766 | Lock nut A lock nut designed for securing a nut on bolt, specifically for those situations in which the bolt cannot be rotated and the bolt is located proximate to an object that can obstruct the ability to rotate the lock nut on the bolt. The lock nut can change ... | 04/15/2003 |
| 6519985 | Stern drive and outboard locks The present invention is a locking device for securing outboard motors and stern drives mounted on a plurality of exposed studs on the stern of a boat, and construction equipment on a plurality of studs inset in concrete or other media and other items whi... | 02/18/2003 |
| 6401504 | Threaded hole locking device A device that is a simple means to secure an equipment having a threaded hole and a localizer such as a wire cable, chain or padlock. The device consists of an attachment connector having a threaded rod and attached to the attachment connector. The attach... | 06/11/2002 |
| 6385876 | Lockable license plate cover assembly A vehicular license plate holder is provided including a frame for removably receiving a license plate and a transparent plate positioned thereon. Also included is at least one locking assembly for preventing the removal of the license plate from the fram... | 05/14/2002 |
| 6176111 | Drum security system A drum security system that includes a drum top and plug assemblies which are inserted and locked in connection with the threaded access openings of the drum top of the system which is secured to a drum to seal the access openings and prevent unauthorized... | 01/23/2001 |
| 6176661 | Stern drive and outboard locks The invention is a locking device for securing outboard motors and stern drives against theft. The invention attaches to the normal mounting bolts of a stern drive or outboard motor. The lock of the invention consists of two, one inch diameter, 304 work-h... | 01/23/2001 |
| 5826447 | Procedure for handling materials in drums and bung-plug apparatus and method therefor A bung-plug lock apparatus for preventing a bung-plug (14, 16) from being unscrewed from a drum bung (12, 14) includes an elongated locking plate (38, 38') having a mounting portion (40, 40') for engaging the bung-plug and a locking portion (44, 44') exte... | 10/27/1998 |
| 5655392 | Anti-theft device for shoes An anti-theft device to be applied to a shoe and provided with a sensor element (52) of an alarm system comprises two clamp plates (11, 12) which can be tightened against each other by a screw mechanism to be attached to the shoe straddling the edge of th... | 08/12/1997 |
| 5596892 | Security drum lockout device A drum lockout device has a locking head with threaded plug portions for engaging either the smaller vent opening or the larger dispensing opening of a drum. When the locking head is in place, a locking key is inserted through the locking head to engage t... | 01/28/1997 |
| 5535605 | Gun lock A two-piece combination lock for use in locking a gun trigger includes a backup member having two cantilevered screws and includes a casing having a chamber containing a lock subassembly with a generally U-shaped frame member for locking the two screws an... | 07/16/1996 |
| 5487288 | Anti-theft device for a spare tire on a pick-up truck An anti-theft device for a spare tire of a pick-up truck including a rigid locking plate having an upper extent slidably securable to a lower rail of a spare tire locking tongue of a pick-up truck and a lower extent with an eyelet formed thereon; a rigid ... | 01/30/1996 |
| 5404736 | Attachable vehicle hand brake lock assembly An attachable vehicle hand brake lock assembly capable of being selectively attached over the end of a push button-activated hand brake to prevent its release. The lock assembly includes a cylindrical shaped body designed to be placed longitudinally over ... | 04/11/1995 |
| 5199286 | Drum lock device A locking device for a drum for chemical- and hazardous-waste containment is described. The locking devices are of drums, usually 30- or 55-gallon sizes, of the closed-end type having a head with two openings or bung holes therethrough. Each drum opening ... | 04/06/1993 |
| 4844397 | Intravenous pole clamp An intravenous pole clamp contains a locking mechanism which employs a spring clutch. The clamp body has an attachment for a medical device and a chamber for receiving an I-V pole. A threaded stud is rotated inwardly to clamp the I-V pole. A spring having... | 07/04/1989 |
| 4788840 | Bung plug locking device A drum locking device which comprises a telescoping locking bar means, one end of which fits into locking relationship with one of a pair of lugged closure members and the other end of which fits over the other of said pair of lugged closure members, and ... | 12/06/1988 |
| 4779434 | Tailgate locking device A device for securing the tailgate of a pickup truck, so that it can not be removed by unauthorized persons. The device is made of three steel assemblies, one of which is fitted over a tailgate extension, using the extension as an anchor for holding the d... | 10/25/1988 |
| 4777809 | Outboard motor lock An anti-theft device for locking an outboard motor comprising an elongated, channel-like, body member has a longitudinally extending opening to closely receive the head portions of clamping screws which clamp the motor to a transom board of a boat, or a m... | 10/18/1988 |
| 4765164 | Spare tire bracket lock A spare tire bracket lock for installation on the existing spare tire support bracket of a pick-up truck or similar vehicle of the type having an elongated spare tire support bracket for supporting the spare tire in the stored position against the underca... | 08/23/1988 |
| 4754628 | Lug lock This lock is designed to prevent unauthorized removal of the wheels of large trucks and buses. Primarily, it consists of a housing that is received on the nut fastener and the studs that hold the wheels on the vehicle, and a locking mechanism that is key ... | 07/05/1988 |
| 4655060 | Locking device for two-holed drums and containers This invention is concerned with a locking device for a drum which seals and locks the bung hole and vent hole of 35 or 55 gallon drums to prevent unauthorized access thereto. The device includes two swivel locks, each consisting of a lock cap containing ... | 04/07/1987 |
| 4631936 | Center locking device of ball train type for a disc wheel of motor vehicle A center locking device of ball train type for a disc wheel of motor vehicle. This device which is provided inside a cap nut prevents the cap nut from loosening, ensures fastening of the disc and proves to be burglarproof.... | 12/30/1986 |
| 4621873 | Quick release assembly with integral lock A quick release locking assembly including an integral lock and protected opposite end formed in combination with a quick release apparatus for securing a wheel to a bicycle frame in a theftproof manner. The hand-operated lever of the quick release is pre... | 11/11/1986 |
| 4562707 | Outboard motor assembly locking system A locking system for the type outboard motor assembly to a boat transom that is held by bolting through a motor mounting plate and through the boat transom includes: (a) the bolting being by round headed bolts with preferably non-circular section necks to... | 01/07/1986 |
| 4466261 | Security apparatus Disclosed is a security device which includes a cylindrical externally threaded member having formed therein a radial first hole and a threaded second hole formed coaxially with the threaded member and intersecting the first hole. A bar is insertable into... | 08/21/1984 |
| 4426863 | Container securing device Disclosed is a device for securing a first article such as a bung in a second article such as the substantially closed end of a container having a receptacle for receiving the bung. The device comprises means mounting selected portions of the first articl... | 01/24/1984 |
| 4358941 | Security method and apparatus Disclosed is a security device and method. The device includes a bolt having a first hole drilled radially therein, a second threaded hole drilled axially therein to intersect the first hole, and a third hole formed axially therein connecting the second h... | 11/16/1982 |
| 4324119 | Passive wheel lock for bicycles and the like A locking device with a main body member having a threaded bore therein adapted for screwing onto the axle bolt of a bicycle, a securing member for shackling the main body member to an adjacent frame member of the bicycle, and a lock device for locking th... | 04/13/1982 |