Thomas Edison obtained a patent for an electrographic vote recorder.
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| Number | Title | Issue Date |
| 7069922 | Paintball marker internal reset system An internal reset system for paint ball markers. A hammer body as modified rearwardly to include an axial opening to receivably retain the forward head of a reset rod. The forward portion of the reset rod is thus free to reciprocate within the axial opening, but res... | 07/04/2006 |
| 6691731 | Corporation stop cleaning device A corporation stop cleaner device includes a T-shaped body having an inlet end, an outlet end, a flushing inlet connection and a flushing outlet connection. The T-shaped body is attached to the fluid inlet of a corporation stop. A removable brush is mount... | 02/17/2004 |
| 6431125 | Device for regulating and cleaning an air intake A device for regulating and cleaning an air port (3) arranged in the wall (2) of a furnace, especially a soda house furnace, comprises a cleaning arrangement (1) and an arrangement (4) for regulating the air flow through the air port, in which an air casi... | 08/13/2002 |
| 5809603 | Pipe cleaning tool A pipe cleaning tool (10) comprises a cleaning assembly (12) and a hollow riser (14) received over the assembly (12). The cleaning assembly (12) defines and axis of rotation and includes a drive shaft (16) for rotating the assembly about the axis and resi... | 09/22/1998 |
| 5383243 | Duct brush A duct brush for cleaning air conditioning and heating ducts. The brush is made up of a flexible hose connected to a cleaning head. The head is constructed to open like an umbrella for cleaning large duct areas. The opening and closing of the cleaning hea... | 01/24/1995 |
| 5276934 | Drain cleaning device A drain clearing device and method comprising an elongated flexible member for positioning in a blocked drain line with the working end of the tool located beyond the blockage and having means for enlargement or deployment of the working end after the too... | 01/11/1994 |
| 5003657 | Device for unblocking intubation tubes and tracheotomy cannulas in vivo A device for unblocking intubation tubes in intubated patients and tracheotomy cannulas in tracheotomized patients comprises two elements which are introduced into the intubation tube or tracheotomy cannula by their distal end, namely a flexible rod (1) r... | 04/02/1991 |
| 4907543 | Boiler air port cleaner A boiler air port cleaner in the form of a substantially plate-like cutter reciprocated by a piston and cylinder power device and guided by a guide structure mounted on the outer wall of a boiler with the plate-like cutter cleaning slag from air ports in ... | 03/13/1990 |
| 4827553 | pipeline bulk residue remover and method A pipline bulk residue remover and method for efficiently removing such residue. The apparatus includes a cable passing through the length of a pipeline potentially thousands of feet in length and connected to a device at each end to enable the cable to b... | 05/09/1989 |
| 4787659 | Apparatus and method for retrieving articles lost in drains A device for retrieving small items which have fallen into common residential drains and have become lodged between the drain inlet and the distal end of the drain trap. The device consists of a elongate tubular portion having an inflatable pouch or ballo... | 11/29/1988 |
| 4698932 | Cleaning apparatus An apparatus for cleaning an interior surface of a barrel of a gun which shoots soft projectiles. The device has a cleaning tip which expands when inside the barrel. Surrounding the cleaning tip is an elastic member which (i) biases the tip toward its con... | 10/13/1987 |
| 4625358 | Chimney cleaning tool A chimney tool for cleaning the soot and creosote out of chimneys and stovepipes, including a pole, and on the end of the pole a bent-rod tool made of resilient material and having a lower shank attached to the end of the pole and mounting a scraper blade... | 12/02/1986 |
| 4568126 | Method and machine for removing blockage and silt from abandoned auger holes A method and machine for removing blockage and silt from abandoned auger holes preparatory to mining a portion of the remaining ore or preparatory to the placement of charges in said holes. Initially, the highwall is faced up by removing blockage proximat... | 02/04/1986 |
| 4538552 | Primary air duct cleaning apparatus for recovery boilers A primary air duct for a chemical recovery furnace is rectangular in cross section. Smelt accumulates on the walls of the air duct at the furnace end. A scraper structure is comprised of a pair of C-channels hinged together at one end. A mechanism moves t... | 09/03/1985 |
| 4393535 | Adjustable brush An adjustable circular brush having a variable effective working diameter comprising a brush having radially projecting flexible bristles and an annular sleeve having a diameter less than the diameter of the bristles; the sleeve being selectively, axially... | 07/19/1983 |
| 4365381 | Chimney cleaner An improved chimney cleaner for removing soot from the insides of chimneys. A lower plate is orthogonally connected to a vertical support member. An upper plate, which is the same shape as but smaller than the lower plate, is located over and concentric w... | 12/28/1982 |
| 4358861 | Drainpipe cleaner An implement for dislodging lumps of matter clogging a drainpipe comprises a long handle with a resilient cup attached to its lower end, the cup having several slits that extend from its rim down to form a plurality of petal-shaped leaves which yield inwa... | 11/16/1982 |
| 4333200 | Chimney cleaner A chimney cleaner device cleans the inside surfaces of a chimney in both an upward and downward direction. The device includes a pair of diverging cleaning arms made of heavy metal, each arm having an integral shank portion and blade portion. The blade po... | 06/08/1982 |
| 4247964 | Chimney sweeping brush There is disclosed a chimney cleaning brush which comprises a large number of bristles extending outwardly and upwardly from a center hub. The bristles are distributed symmetrically around the periphery of the hub. Each bristle comprises a pre-formed leng... | 02/03/1981 |
| 4222142 | Gun cleaning device A tip for a cleaning rod is disclosed. The tip has a threaded end to be received in the threaded end of a cleaning rod, and a rag receiving loop on the end opposite the threaded end. Bristles are supported on the body of the tip between the threaded end a... | 09/16/1980 |
| 4031590 | Pipe scraper Apparatus for scraping the interior sides of the walls of pipes, having retractable scraper elements at each end of a carrier body or at only one end thereof. The scraper apparatus is preferably moved in both directions through a pipe, the trailing scrape... | 06/28/1977 |
| 4021265 | Method and apparatus for cleaning tubular structures Removal of foreign objects from tubular structures is accomplished by inserting a pressurizable tube with an expandable end chamber into the tubular structure past the position of the foreign object, forming a seal within the interior of the structure by ... | 05/03/1977 |
| 3977331 | Pipe scraper Apparatus for scraping the interior sides of the walls of pipes, having ractable scraper elements at each end of a carrier body. The scraper apparatus is preferably moved in both directions through a pipe, the trailing scraper elements preferably being r... | 08/31/1976 |