Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
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| Number | Title | Issue Date |
| 7270181 | Downhole surge pressure reduction and filtering apparatus The present invention provides a downhole cementing apparatus run into a borehole on a tubular. The apparatus is constructed on the pipe in such a way that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilize the fluid pathway of t... | 09/18/2007 |
| 7163058 | Hydraulic jar device An arrangement by a hydraulic jar device, especially for use in underground wells, where the jar device is installed in a pipe string led down into the well, and designed so that e.g. a stuck object in the well may be loosened or broken up by upward or downward perc... | 01/16/2007 |
| 7140428 | Expander for expanding a tubular element A duplex expansion apparatus for expanding a wellbore tubular to two different diameters from an initial diameter is provided. The duplex expansion apparatus includes: a first diameter expansion cone that is, in a relaxed state, of a diameter less than the internal ... | 11/28/2006 |
| 7131498 | Expander for expanding a tubular element A method is provided for providing a casing in a wellbore including placing a casing within the wellbore wherein the casing has a smaller outside diameter than a final inside diameter of the casing, placing an expandable mandrel within the casing, the expandable man... | 11/07/2006 |
| 7117940 | Expander for expanding a tubular element An apparatus and method for expanding a wellbore tubular such as a casing is provided. The apparatus includes: an expandable casing; a drill string extending to within the drillstring; an expansion cone suspended from the drillstring, the expansion cone having an ex... | 10/10/2006 |
| 6966375 | Downhole surge pressure reduction and filtering apparatus The present invention provides a downhole cementing apparatus run into a borehole on a tubular. The apparatus is constructed on the pipe in such a way that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilize the fluid pathway of t... | 11/22/2005 |
| 6571869 | Downhole surge pressure reduction and filtering apparatus The present invention provides a downhole cementing apparatus run into a borehole on a tubular. The apparatus is constructed on the pipe in such a way that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilize the fluid p... | 06/03/2003 |
| 6568472 | Method and apparatus for washing a borehole ahead of screen expansion The invention provides apparatus and methods for washing a wellbore ahead of an expansion swedge and radially expanding a sand-control screen jacket in a subterranean well. The methods and apparatus can be used in either the bottom-up or top-down directio... | 05/27/2003 |
| 6533033 | Pump protection system Embodiments of a pump protection system are disclosed which may be used to enclose, protect, and improve the efficiency of a submersible pump. The pump protection system of the instant invention prevents unwanted materials from clogging the pump intake po... | 03/18/2003 |
| 6059032 | Method and apparatus for treating long formation intervals A method and apparatus for treating a long interval within a wellbore wherein a treatment fluid is delivered to selected levels within the interval by blocking flow to certain zones while allowing flow to others. A treatment tube extends substantially thr... | 05/09/2000 |
| 5669454 | Drive point device Described is a device for driving into the ground which includes a drive point, a fluid passage section, an annular seal and an annular drive rod. The annular seal is the widest member and fits snugly in a borehole formed after the device is driven into t... | 09/23/1997 |
| 5570747 | Drive point device Described is a device for driving into the ground which includes a drive point, a fluid passage section, an annular seal and an annular drive rod. The annular seal is the widest member and fits snugly in a borehole formed after the device is driven into t... | 11/05/1996 |
| 5449045 | Drive point device Described is a device for driving into the ground which includes a drive point, a fluid passage section, an annular seal and an annular drive rod. The annular seal is the widest member and fits snugly in a borehole formed after the device is driven into t... | 09/12/1995 |
| 5377750 | Sand screen completion A sand screen having a plurality of sintered, substantially spherical plastic members covering a perforated mandrel is releasably suspended from a packer mandrel by a locking mandrel and a landing nipple. The sand screen and locking mandrel are retrievabl... | 01/03/1995 |
| 5348092 | Gravel pack assembly with tubing seal A sand control screen installation for a well includes an auger type sand control screen connected to a length of smooth-walled tubing which is disposed in a tubing seal support sub connected to a packer and having a frangible coupling interconnecting the... | 09/20/1994 |
| 5310000 | Foil wrapped base pipe for sand control The flow apertures of a perforated mandrel are temporarily sealed by a foil covering sheet which is made of a sacrificial material, for example, zinc, aluminum and magnesium The sacrificial covering sheet prevents dirty completion fluid from passing throu... | 05/10/1994 |
| 5295538 | Sintered screen completion A sintered metal screen is releasably suspended from a packer mandrel by a locking mandrel and a landing nipple. The sintered metal screen and locking mandrel are retrievable with the assistance of a running tool which is insertable into the bore of the l... | 03/22/1994 |
| 4750557 | Well screen A well screen device having body member, screen member attached to the body member, cup member attached to the body member for positioning the device in a fluid flow path, and channel member for conducting screened fluid from the screen. The device's cup ... | 06/14/1988 |
| 4700776 | Sand control devices and method of installation thereof A well screen filter is formed with inner and outer concentric screens defining an annular filtering space filled with filtrating medium. A lower perforated plate supporting the filtrating materials has passages allowing transit of fine particles entraine... | 10/20/1987 |
