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 |
| 5382114 | Tunnel excavation apparatus A tunnel excavation apparatus comprises a frame mounted on crawler tracks and provided with pistons comprising stabilizer feet, a power unit, a working unit, and auxiliary movement and positioning services. The working unit is arranged on an arm mounted o... | 01/17/1995 |
| 5290125 | Tunnel lining method and apparatus suitable for the purpose In a tunnel lining method an apparatus, comprising at least one excavation tool of the chain, belt or band type or the like, is positioned to coincide with the longitudinal axis of the tunnel at a point on its extrados; the tool is made to advance to a pr... | 03/01/1994 |
| 5253955 | Automatically advancing supporting and sliding form for introducing an in-situ concrete lining A slide formwork with a formwork body (10) comprising several formwork segment groups (12, 22, 32) lying adjacent to one another in circumferential direction. Each of the formwork segment groups (12, 22, 32) is rigidly connected with one of several suppor... | 10/19/1993 |
| 5152638 | Process and apparatus for excavating tunnels A machine for consolidating the soil for underground drilling excavations by means of the technique of the protective umbrella comprises a frame or chassis mounted on ground engaging motor driven crawler tracks and is provided with pistons having stabiliz... | 10/06/1992 |
| 5129764 | Device to feed reinforcement rods Device (26) to feed reinforcement rods (25), which is suitable to cooperate with an excavation equipment (14) in providing lengthwise reinforcements in tunnels, particularly in excavations of a great depth amounting to about twenty meters or more, the exc... | 07/14/1992 |
| 5104260 | Method and apparatus for tunnelling The method for boring a tunnel consists in placing an excavation tool at a point of the extrados of the tunnel and in excavating a cavity by imparting the tool an advancement movement having divergent direction with respect to the axis of the tunnel. Whil... | 04/14/1992 |
| 4666336 | Method of and apparatus for building thin lining on tunnel A method and an apparatus for building a thin lining on a tunnel to be excavated. The method includes the steps of boring a slot along an outer periphery of a cross section of the tunnel, filling lining material into the slot so as to form the lining mate... | 05/19/1987 |
