Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7410330 | Cutter assembly The cutter assembly contains an axle having a number of parallel, equally spaced troughs along the axial direction, and a number of circular blade discs, each having a center hole threaded through by the axle. Each blade disc has a number of teeth along the circumfe... | 08/12/2008 |
| 7341407 | Rasp blade with cutting teeth laterally displaced from a planar body A tire rasp blade made with an arcuate shape having a planar body with cutting teeth at the outer working edge. The cutting teeth extend laterally relative to the planar body in alternating sets of curved sections. The curved sections preferably form a sinusoidal cu... | 03/11/2008 |
| 7210509 | Chipping head A chipping head, particularly a chipping head of a chipping canter, is disclosed comprising a head body having thereon mounted multiple chipping knives that are adapted on the head body in an annular fashion spaced at a distance from each other. Onto the chipping he... | 05/01/2007 |
| 7182554 | Drywall rasp A rasp includes a body including upper, lower, front and rear portions. The lower portion has a groove that has first and second sections extending along a length thereof. The first section includes equidistantly spaced coextensive cutting blades extending downwardl... | 02/27/2007 |
| 7090442 | Shaper router and method A routing tool for cutting material and an associated apparatus and method are provided. The tool includes a substantially cylindrical shaft member having a shank portion and a cutting portion. The cutting portion includes a plurality of cutting teeth disposed perip... | 08/15/2006 |
| 6899493 | Cutting tool A rotary cutting tool (10) having a plurality of removable cutting inserts (16) is provided. The rotary cutting tool (10) comprises a rotary tool body (12) for rotation about a central shaft. The tool body includes an outer profile periph... | 05/31/2005 |
| 6726410 | Hub assembly A hub assembly includes a core 10 of prior art construction held together between a pair of end plates 16, 18 by a cylindrical sleeve 14, the end plates 16, 18 being braced by flange 20 and nut 42 tightened on threaded end | 04/27/2004 |
| 6695547 | Tire rasp blade and assembly A rasp blade 200 has cutting teeth 130, 132, 134, 136, 140 arranged along the outer perimeter of the blade and having a variable radius. The radius is raised for the teeth 130, 132, 134, 136 at either end of the blade. The radius is lower for the teeth 14... | 02/24/2004 |
| 6626613 | Cutting tool A rotary cutting tool having a plurality of removable cutting inserts is provided. The rotary cutting tool comprises a rotary tool body for rotation about a central shaft. A plurality of slots extend radially inwardly from the outer peripheral edge of the... | 09/30/2003 |
| 6554547 | Tire rasp blade and method of use In an arrangement of rasp blades on a tire buffing machine, adjacent rasp blades in a stack of blades are mounted to the rasp hub. The blades are placed in alternating relations such that the teeth on one blade are staggered relative to the teeth on adjac... | 04/29/2003 |
| 5919007 | Combined file and rasp for laminate materials A combination rasp and file for laminate materials of the type including a top plastic layer includes a rasp side having a multiplicity of rasp teeth formed for removing plastic and wood effectively but without leaving an unacceptably rough finish. The ra... | 07/06/1999 |
| 5504981 | Bent blade and spacer tire rasp hub assembly A rasp hub assembly for use in a tire buffing machine is disclosed. The hub assembly includes two end plates, and a set of tire rasp blades and spacers arranged in alternating circumferential rows. The blades and spacers have conforming nonplanar elongate... | 04/09/1996 |
| 4990035 | Contour milling cutter A cutting tool for machining printed circuit boards and the like includes a cutting part having an longitudinal axis of rotation, an outer surface, and a plurality of staggered teeth formed on the outer surface. The cutting part has a first predetermined ... | 02/05/1991 |
| 4941245 | Rotary file, support member and abrasive device A disc-shaped rotary file, having a relatively flat operating surface with a curved outer periphery, is formed of ferromagnetic material and includes a plurality of cutting members. The rotary file also includes a second side opposite the operating surfac... | 07/17/1990 |
| 4685181 | Heavy duty rotary disc rasp A rotary disc rasp formed from a dish shaped rigid metal plate. Holes are punched or drilled through the plate in the direction of rotation and the rear edges of the holes are forced outwardly relative to the convex side of the plate to provide cutting te... | 08/11/1987 |
| 4639989 | Sanding tool A sanding tool comprises a plurality of saw blades arranged in spaced relation projecting from a planar surface of a rigid plastics supporting member a distance of the order of 1/8 inch. The spacing of the blades is very much wider than the width of the b... | 02/03/1987 |
| 4635407 | Truncated-cone roller with abrasive surface for smoothing tool with radial truncated-cone roller The abrasive surface of the roller has the shape of a continuous helix with variable pitch constituted by a succession of single abrasive plugs of similar characteristics and size.... | 01/13/1987 |
| 4498512 | Lumber saw-sizing tool The invention comprises an attachment for a portable hand-tool for the dressing of lumber to obtain roughened or saw-sized surfaces. The attachment comprises a circular disk having a hub to attach it to a portable rotary drive such as a rotary hand-grinde... | 02/12/1985 |
| 4326823 | Rotating cutting tool The invention relates to cutting tools for metal working. The claimed cutting tool (needle-cutter) comprises cutting elements assembled at least into two sets and presenting essentially pieces of wire. The cutting elements are fastened to one another at o... | 04/27/1982 |
| 4325276 | Nipple engaging tool A tool for engaging nipples to be applied to or removed from threaded pipe has a plurality of circumferentially spaced longitudinally extending gripping edges formed on elongated members which are arranged in a tapered configuration relative to the longit... | 04/20/1982 |
| 4291445 | Rotary cutting blade assembly A rotary cutting blade assembly for removing rubber tread material from a pneumatic tire carcass prior to texturizing and finishing the tire carcass for retreading includes a cutting wheel rotatably mounted on an arbor. The cutting wheel includes a plural... | 09/29/1981 |
| 4137617 | Circular grater for cutting plastic The present invention is a circular grater for use in combination with a power-driven hand tool. The power driven hand tool includes a motor within a housing and a shaft mechanically driven thereby. The hand tool also includes a circular mounting member w... | 02/06/1979 |
| 4116200 | Milling tool for surgical purposes A surgical milling tool with a hand-operated milling machine for milling the heads or sockets of bone joints of spherical shape is disclosed. The tool is formed of a hemispherical cup integrally formed with a cylindrical skirt and flange and is provided w... | 09/26/1978 |
| 4099310 | Battery terminal cleaner A device for cleaning the terminals of a typical wet cell automobile battery or the like. The device includes a body having first body member with a cavity therein for receiving a portion of the terminal to be cleaned and having a second body member with ... | 07/11/1978 |
| 4069568 | Rotary rasping surface scarifying attachment with tilting base An attachment for a rotary rasping surface scarifying tool has a base member affixable on a rotary scraping tool and provided with a recess receiving a rotary blade of the tool in such a manner that the teeth of the blade are partially covered and partial... | 01/24/1978 |
| 4070130 | Rotary cutting tool A rotary cutting tool used successfully for machining metal articles, metallic strips, round bars and pipes including descaling, derusting, grinding and polishing. The tool has an arbor with sets of cutting elements in the form of pieces of wire which are... | 01/24/1978 |
| 4023313 | Rotary sanding and stripping blade There is disclosed an elongated abrasive blade for use on a rotary device and especially suited for removing material from a surface such as a floor. The blade is essentially rectangular in shape and comprises a multiplicity of abrading chips arranged in ... | 05/17/1977 |
| 4023572 | Milling tool for preparing a joint socket in the prosthetic replacement of a joint A surgical milling tool includes a body having a hemispherically-shaped outer surface and defining an internal cavity. Cutting blades carried at spaced locations on the outer surface are operative to mill tissues of a joint socket when the tool is introdu... | 05/17/1977 |
