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 |
| 4444395 | Golf club A golf club used in putting a golf ball having an elongated head constructed of relatively lightweight, preferably aluminum, material at its central portion and having relatively heavier metal end portions. In proportion to the diameter of a standard U.S.... | 04/24/1984 |
| 4431670 | D-Phenylalanine treatment Method of treating pain, depression and Parkinsons disease using prescribed daily administration of D-phenylalanine alone, which has been found useful as an analgesic in warm blooded animals, as an antidepressant administered alone or in combination with ... | 02/14/1984 |
| 4431194 | Improved backgammon and dice A game for two players including a new and improved set of three dice, a backgammon board and thirty chips or men, fifteen of one color or mark and the other fifteen of another color or mark. The three dice include two dice with conventional digits and a ... | 02/14/1984 |
| 4431391 | Rotary pump A rotary pump including a circular case, and mating cover forming a cylindrical cavity, an outer ring sized for rotating within the case cavity, a partial inner ring sized for relative rotation within the outer ring, and a driven elongated blade pivotally... | 02/14/1984 |
| 4422637 | Pool ball holder and spotting device A storage and dispensing device for billiard balls or pool balls that includes a pivotable off-loading arm that positions the balls at a plurality of desired positions on a billiard table or pool table for subsequent play. The storage and dispensing devic... | 12/27/1983 |
| 4422313 | Container inside locking system An enclosed locking system for transportable commercial containers having swinging or roll-up access doors. A main feature of this locking system is that it renders the locked container virtually tamper-proof. Only the key access hole is externally access... | 12/27/1983 |
| 4411657 | Hypodermic needle An improved hypodermic needle to greatly reduce or eliminate trauma to nerve fascicles during the injection of an anesthesia. The needle includes a solid, conically-shaped tip, preferably pointed, an elongated shaft having a hollow interior for delivering... | 10/25/1983 |
| 4405202 | Protective microscope container with remote control mechanism A protective microscope container for housing a microscope having a pair of focus control extension knobs extending therefrom and a pair of two dimensional slide holder control arms extending from the rear of the container. Two dimensional control members... | 09/20/1983 |
| 4397203 | Towel cutting machine A towel cutting machine includes a drive feed device including rollers for feeding strip material from a towel supply roll to and between a cutter blade and braking-sensing mechanism and into a set of driver pull slip-clutch rollers to pull the strip of m... | 08/09/1983 |
| 4390030 | Ashtray An ashtray having an upper opening smaller than the internal compartment. The internal compartment stores cigarette ashes and includes a cigarette holding device. The cigarette when placed in the holding device is positioned completely within the internal... | 06/28/1983 |
| 4390159 | Snap-on shut off valve A snap-on, easily removable, fluid shut off valve (with pipe and interlocking member) that is useful as a low cost, primary turn off valve for domestic and commercial fluid fixtures and is quickly installed by manual snap-on between the inlet fluid supply... | 06/28/1983 |
| 4384542 | Outrigger device An outrigger device attachable to a flying bridge or a tower leg, comprising a hollow tubular member which is connected to the flying bridge or tower support member. The hollow tubular member has its proximal end connected to a system of brackets which al... | 05/24/1983 |
| 4384568 | Solar heating system A solar heating system comprising a solar collector having its input connected to a pressurized fluid source and its output connected to an input of a fluid storage device, the fluid flow from the output being controlled by a thermally controlled valve, a... | 05/24/1983 |
| 4380227 | Grinding wheel dressing apparatus An improved grinding wheel dressing apparatus for reproducing a contour on a grinding wheel from an enlarged contour or master form. The improvement in my previous U.S. Pat. No. 3,022,780 includes a novel linkage system for interconnecting the tool slide ... | 04/19/1983 |
| 4380327 | Safety barrier A collapsible, durable, mildew proof safety barrier comprising a plurality of vertical support members which are supported in sleeves inserted within the ground, at least one flexible restraining panel connected between the vertical support members, a con... | 04/19/1983 |
| 4379460 | Method and apparatus for removing cardiac artifact in impedance plethysmographic respiration monitoring A method of removing cardiac artifact during monitoring of a patient's respiration using impedance plethysmography when the patient has a regular, substantially periodic heartbeat. This method comprises generating an impedance signal responsive to both ca... | 04/12/1983 |
| 4379056 | Filtering scraper cleaning devices An improved filtering system that includes a cleaning assembly and a filter element in the form of a plate or drum with a plurality of long, narrow through openings or slits in each of a plurality of rows. The improved cleaning assembly and filter element... | 04/05/1983 |
| 4375943 | Embankment pump A portable pump for displacing water having a frame supported by ground contacting wheels for transport, an elongated tubular conduit with an impeller mounted therein and a drive shaft with one end connected to the impeller and the other end having a non ... | 03/08/1983 |
| 4367798 | Horse hoof cleaning tool A combination tool for manually picking, scraping, brushing, and in general cleaning a horse's hoof. The tool includes a replacable brush threadably fastening at one end and a body having an integrally formed handle for effective and comfortable manipulat... | 01/11/1983 |
| 4361916 | Pediatric table-chair A pediatric table-chair which allows for multiple positioning of a body support platform when in its functional position or for folding when not in use. The table has a body support platform which has an upper end pivotally connected to two rigid supporti... | 12/07/1982 |
| 4357744 | Method of connecting insulated glass frame A corner connector for connecting adjacent hollow intermediate frames used in the construction of insulated glass panels. The corner connector includes a two-part body having a flexible mid-portion. One end of each body portion has a retaining arm. When e... | 11/09/1982 |
| 4355855 | Deep water connector A waterproof, electrical connector with a bulkhead mounted receptacle having an "O"-ring or other expandable gasket compressed between the bulkhead and the mating surface of the receptacle shell. Another "O"-ring in the inside circumference of the one pie... | 10/26/1982 |
| 4353443 | Vehicle throttle control A manually operable motor vehicle throttle control device which is used to provide a speed control for the vehicle and which includes a manual override arm for releasing the throttle control to allow the throttle to return to the idle position. The device... | 10/12/1982 |
| 4353386 | Sequencing valve An improved flow sequencing and check valve which delivers a single source of fluid to a plurality of outlets. The improvement includes a generally cup-shaped portion which never disengages with the entrance port as it moves the sequencing disc closed in ... | 10/12/1982 |
| 4352338 | Pulpit A knock-down pulpit for a boat comprising a first brace connectable to the front deck of a boat, a body support platform, a frame for holding the body support platform which is connected to the first brace, a railing connected to the frame, a second brace... | 10/05/1982 |
| 4344299 | Transportable compartment refrigeration panel system and method of installing A refrigeration installation method and system for transportable containers. The refrigeration system comprising at least one refrigeration panel readily attachable to the interior walls of the refrigerated compartment of a truck, rail car, trailer, or sh... | 08/17/1982 |
| 4340809 | Security device and method for postage meter machines The present disclosure has to do with the prevention of the fraudulent alteration of postage meter tapes whereby they can be used without paying the proper postage. A simple locking device may be added to existing postage meters whereby the postage meter ... | 07/20/1982 |
| 4332057 | Apparatus for mechanically extracting fish roe An apparatus for mechanically extracting fish roe utilized in conjunction with a continuous operation to butcher and clean fish, especially salmon. After head removal, each fish traverses along a V-shaped trough, tail first and belly up, through side comp... | 06/01/1982 |
| 4325481 | Anchor plate A new and improved anchor plate for maintaining stacked containers in a stable relation. The anchor plate includes a substantially rigid body for placement between adjacent containers, the body having a plurality of corrugated patterns formed therein, eac... | 04/20/1982 |
| 4323451 | Array of filter elements An improved array of filter elements for a self-cleaning filter screen apparatus for continuous removal of suspended solids in a fluid. The filter elements are staggeringly interconnected in the form of an endless belt for movement through the fluid. Each... | 04/06/1982 |
| 4316356 | Lawn mower for cutting on an inclined surface A rotary blade type cutting system for cutting grass or the like at a uniform height either on a flat surface, an inclined surface, or along the border adjacent a surface depression. The system is especially useful for cutting the bordering grass around g... | 02/23/1982 |
| 4316593 | Combination connecting plate A single connecting plate useful for joining wall-mounted shelf support brackets together with ventilated metal closet shelves of different sizes. The connecting plate is adaptable to fit two different sized closet shelves, depending upon the orientation ... | 02/23/1982 |
| 4315661 | Drawer slide An improved mating drawer slide system including two pair of longitudinal channel members for each drawer. The first pair of channel members includes one slide connectable to the cabinet and the mating second slide connectable to one side of a movable dra... | 02/16/1982 |
| 4307657 | Popcorn popping and vending machine A manually actuated popcorn machine which heats, pops kernels of corn, and delivers a specified amount of popped corn to a waiting container in a short time. The popcorn machine includes a recirculating hot air conduit with an air blower portion, heating ... | 12/29/1981 |
| 4305512 | Jar organizer and storage rack An organizer and storage rack for small canned or jarred commodities, such as foodstuffs, which allows for convenient manual dispensing of a particular individual jar. The storage rack may be vertically mounted on a door or wall structure and includes one... | 12/15/1981 |
| 4304005 | Device for attaching an eye shield to a cap A device for attaching a variety of various eye shields or spectacles, safety shields or the like to a cap which allows for variable adjustment in the location of the spectacles with respect to the cap, removeable attachment, and two position up-down posi... | 12/08/1981 |
| 4304401 | Quadriceps exercising device A device for exercising the quadriceps muscles of a human body comprising a horizontally supported planar surface supported at chair height vertically by a pair of U-shaped bars forming four vertical support members. A horizontal bar is connected between ... | 12/08/1981 |
| 4303145 | Ladder, platform & extension A dual purpose ladder attachment usable singularly as a human body support platform with hand rails or in a pair as a scaffold jack. Each ladder attachment comprises two pairs of pivotally joined support beams. Each pair of pivotally joined support beams ... | 12/01/1981 |
| 4300601 | Vacuum valve and monitoring system A removable vacuum indicator valve, horizontally affixed to the outside of an evacuated container, such as a flat-plate solar energy collector, wherein a movable sphere inside the valve is positioned to open or close the valve by the force of gravity or a... | 11/17/1981 |
| 4298917 | Motion light device A plurality of lighting devices connected to a power source and a switching lighting circuit connected between the light devices and the battery source. The switching lighting circuit includes a chain switching device which is responsive to motion, such t... | 11/03/1981 |