Bizarre Patents
Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
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| Number | Title | Issue Date |
| 7234538 | Method for sinking a borehole in the ground and wet boring tool The invention relates to a method for sinking a borehole in the ground, in which a wet boring tool with a removal area for producing or advancing a borehole is used, the borehole is at least partly filled with a fluid and in the borehole is formed a filling area and... | 06/26/2007 |
| 7128165 | Excavation system and method A system and method of cutting a core out of a finished surface for keyhole excavation provides a truck with a turret to which a support arm supporting the cutter assembly is mounted, and a stabilizing member remote from the turret, which allows the turret to be rot... | 10/31/2006 |
| 7104344 | Percussion drilling head Device and method for drilling into geological formations. The device comprises: a rotatable body; drilling cutters arranged on an axial end surface of the rotatable body; a percussion part, which ... | 09/12/2006 |
| 4688648 | Method of and apparatus for crushing earth under the ground Method and apparatus for crushing the earth under the ground by boring a hole; inserting a drill head having radially directed water jet thereon down the hole to the desired stratum; rotatingly moving the drill head upwardly while jetting water radially t... | 08/25/1987 |
| 4627180 | Excavating bucket An open ended cylindrical casing is provided with a pair of semicircular blades rotatably mounted to the lower open end of the casing so that the blades may be rotated from a digging position where they project downward from the lower end of the casing to... | 12/09/1986 |
| 4413958 | Apparatus for installation in wells An electric pump assembly (1) for lifting fluids in wells comprises a plurality of electric pumps (20) and (24) located at axially spaced apart locations in the well each pump having an axial aperture (21) to permit wire line operations to be conducted in... | 11/08/1983 |
| 4367794 | Acoustically actuated downhole blowout preventer An acoustically operated downhole blowout preventer using a specially configured sleeve valve to inflate a resilient packer for shutting the wellbore annulus.... | 01/11/1983 |
| 4296823 | Cable tool with circulating drill stem A cable tool (10) includes a tool bit (12), a drill stem (14) and an adapter (16). Openings (32) are formed in a cutting face (18) of the tool bit (12) and inclined bores (34) extend upwardly within the tool bit (12) to an upwardly extending bit passagewa... | 10/27/1981 |
| 4291722 | Drill string safety and kill valve A drill string safety and kill valve for a string of drill pipe used for drilling wells including a tubular valve body connectible in the drill pipe, a ball valve in the body mounted to rotate between open and closed positions for controlling flow through... | 09/29/1981 |
| 4262693 | Kelly valve A valve adapted for installation at the lower end of a drilling kelly for closing the bore of the kelly when adding a section of drill pipe so that the mud content of the kelly is not discharged onto the derrick floor; the valve also being adapted with mi... | 04/21/1981 |
| 4256192 | Pressure core barrel This invention relates to improvements in pressure core barrels of the type described in U.S. Pat. No. 3,548,958 wherein a controlled pressure is maintained on a core sample during surfacing. Among the improvements provided by the present invention are an... | 03/17/1981 |
| 4230192 | Core sampling apparatus and method Coring apparatus for obtaining core samples which may comprise: an outer barrel assembly, the lower end of which is adapted for connection to a core bit, the upper end of which is adapted for connection to a drill string; an inner barrel assembly concentr... | 10/28/1980 |
| 4228862 | Apparatus for drilling holes in the ground The present invention relates to an apparatus for drilling holes in the ground. The apparatus comprises a cylindrical drilling tool having one end coupled to a motor assembly for rotating the tool by way of an elongate rotatable sleeve. A hydraulic jack i... | 10/21/1980 |
| 3997010 | Downhole forward and back scuttling tool A down hole forward and back scuttling tool capable of being removably connected to a power driven drill string and to an expandable reamer to transmit torque from the drill string to the reamer as the latter is transversely expanded and rotated to form a... | 12/14/1976 |
| 3965999 | Drilling grab for pile foundations and well boreholes A drilling grab for pile foundations and well boreholes wherein the drilling grab comprises a grab body supporting circular grab spades which tilt from an open position to a closed position about pivot pins carried by the grab body. A radially projecting ... | 06/29/1976 |
| 3938589 | Drilling tool A drilling tool connected in a drilling string includes a pressure responsive rotatable ball valve for enabling drilling fluid flow down the bore of a drill string which automatically rotates closed for blocking flow through the bore of the drill string w... | 02/17/1976 |
