Bizarre Patents
Mouthguard made at least partially from an edible candy
A mouthguard includes a U-shaped upper bite plate which removably fits over upper teeth of a person, with the entire upper bite plate being made from a soft, deformable and edible gummi candy.
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| Number | Title | Issue Date |
| 7861807 | Drill bit including one piece cutting head A cutting head for a drill bit has a body with an overall cruciform shape. One pair of opposing arms defines a main cutting edge. The other pair of opposing arms defines an auxiliary edge. The main cutting edge is defined by rake surfaces and relief surfaces. Each r... | 01/04/2011 |
| 7540341 | Drill bit A drill bit of the present invention is intended to stably perform drilling by lessening a great change in a drilling condition and to avoid reduction of a drilling efficiency even when large chip lumps are generated. In the drill bit, the main cutting blades have m... | 06/02/2009 |
| 7258180 | Rotary hammerdrill bit A rotary hammerdrill bit for use with a percussion drilling device or a hammer drilling device, with a shank and a drill head attached to or configured on the shank, wherein a front side pointing in the advance direction of the drill head has a main cutting plate fo... | 08/21/2007 |
| 7225890 | Cutting plate for a drill bit An auxiliary cutting plate (10) for a multi-cutting plate drill bit (2) has a body (44) for fixing into a slot in the drill bit (2) and a profiled tip (46). The body (44) has a central longitudinal axis and the profiled tip ... | 06/05/2007 |
| 7140814 | Spade-type drill bit having helical configuration A spade bit including a longitudinally extending shaft having a cutting member located at a distal end thereof. The cutting member comprises a pair of helically shaped, opposed blades joined along the longitudinal axis of the shaft and an axially extending pilot spu... | 11/28/2006 |
| 7040416 | T-post hole-forming device and use for installing a T-post The invention provides a T-post hole-forming device, comprising (a) a shaft; (b) a head for receiving a driving force at the top of said shaft; (c) a flat plate affixed to one side of said shaft, the shaft terminating in a pointed end for piercing the ground. Also p... | 05/09/2006 |
| 6997273 | Blunt faced cutter element and enhanced drill bit and cutting structure The cutter element includes a rounded apex offset from the center line of the insert and having a relatively broad and blunt front face and a narrower, more rounded rear face. The cutter element may be disposed in the outermost inner row of a rolling cone cutter of ... | 02/14/2006 |
| 6994615 | Cutting tools with two-slope profile An abrasive tool insert is formed from a substrate having an inner face that has a center, and annular face which annular face has a periphery. The inner face slopes outwardly and downwardly from the center at an angle ranging from between about 5° and 30° from th... | 02/07/2006 |
| 6976549 | Drilling tool The invention relates to a drilling tool (1), in particular for working concrete, rock, masonry and suchlike materials, having a tool head with cutting body (5) which has at least one front rake face (9, 10), at least one rear flank ([lacuna] | 12/20/2005 |
| 6933049 | Abrasive tool inserts with diminished residual tensile stresses and their production An abrasive tool insert includes (a) a substrate having a support face that includes (1) an inner support table, (2) an outer shoulder having a width, Sw, and (3) a downwardly sloping interface from the support table to the shoulder, which interface has a... | 08/23/2005 |
| 6929079 | Drill bit cutter element having multiple cusps Cutter elements for use in rolling cones rock bits are disclosed having a crown that includes multiple, spaced-apart cusps for enhancing formation removal by creating overlapping Hertzian contact zones. The cusps may be partially dome-shaped, berm shaped or otherwis... | 08/16/2005 |
| 6799648 | Method of producing downhole drill bits with integral carbide studs A down hole rock drill bit and method of manufacture of the same comprising a cast metal drill bit body having a plurality of hardened carbide studs partially cast in the drill bit body. The drill bit is cast by means of a foam pattern replicating the drill bit, typ... | 10/05/2004 |
| 6588519 | Head for a rock drill A rock drill head including a radially extending groove (2a) formed in a head body, a recess (5) formed inside the groove (2a); and at least two, substantially plate-shaped, hard-material inserts located in the groove (2a) and having each a radially exten... | 07/08/2003 |
| 6283232 | Rock drill A rock drill including a drill stem (2), major cutting edges (5, 6) extending substantially over a diameter of the drill stem (2) and projecting beyond the end face (3) of the drill stem, and at least one minor cutting edge (9, 10) extending substantially... | 09/04/2001 |
| 6161633 | Apparatus for boring through a solid material A rotary drill bit for boring a hole through a solid body is disclosed. The drill bit comprises a collar and a penetrating member. At a proximal end, the collar is attachable to a drill shaft. At a distal end, the collar is attachable to the penetrating m... | 12/19/2000 |
| 5836410 | Percussive blow assisted rotary drill A percussive blow assisted rotary drill, has an axially extending shank (1) with a leading end face (3) and an axially extending outside surface (2) with helically extending drilled material removal grooves in the outside surface. A hard metal main cuttin... | 11/17/1998 |
| 5685769 | Tool component A tool component comprises an abrasive compact layer bonded to a cemented carbide substrate along an interface. The abrasive compact layer has a working surface on a side opposite to the interface which is flat and which presents a cutting edge or point o... | 11/11/1997 |
| 4903787 | Rock drill A rock drill haivng a drill head with cruciform cutting tips is proposed which has improved chiselling properties in the case of percussive loading in hard rock or the like. For this purpose, the main cutting tip (4) is of a design know per se with second... | 02/27/1990 |
| 4531592 | Jet nozzle Methods and apparatus are provided for extending the effective length of a jet of fluid exiting a nozzle. An elongated jet extension member extends substantially axially outward from a nozzle outlet, and the jet of fluid flowing along and around the exten... | 07/30/1985 |
