Bizarre Patents
Pillow with retractable umbrella
A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.
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| Number | Title | Issue Date |
| 5413180 | One trip backwash/sand control system with extendable washpipe isolation A travel joint and latching assembly is connected below a gravel pack service tool to set an isolation assembly while performing backwashing and gravel pack operations, in a single trip. The travel joint is protected against inadvertent expansion by a pos... | 05/09/1995 |
| 5392862 | Flow control sub for hydraulic expanding downhole tools A hydraulic control sub assembly for actuating hydraulically operated downhole remedial tools, such as section mills or underreamers, is disclosed. The control sub features a drop ball mechanism to terminate the flow of drilling fluid to the hydraulic too... | 02/28/1995 |
| 5332045 | Apparatus and method for placing and for backwashing well filtration devices in uncased well bores An earth well completion apparatus and method wherein a work string equipped for jet washing downhole filtration devices, such as well screens and for back washing said downhole filtration devices and containing multiple ball catcher subs which utilize th... | 07/26/1994 |
| 5180016 | Apparatus and method for placing and for backwashing well filtration devices in uncased well bores An earth well completion apparatus and method wherein a work string equipped for jet washing downhole filtration devices, such as well screens and for back washing said downhole filtration devices and containing multiple ball catcher subs which utilize th... | 01/19/1993 |
| 4893678 | Multiple-set downhole tool and method A downhole tool is provided suitable for multiple setting and unsetting operations in a well bore during a single trip. The downhole tool is suspended in the wellbore from a tubing string, and is activated by dropping a metal ball which plugs the passagew... | 01/16/1990 |
| 4828037 | Liner hanger with retrievable ball valve seat In a hydraulically operated setting tool for liner hangers used in a well bore, a norally countracted ball seat formed in the setting tool mandrel by contracted and elongated finger members. Upon seating a ball member in the ball seat, applied pressure is... | 05/09/1989 |
| 4828023 | Mechanical latching device operated by dead weight and tension A mechanical latching device for repeatable latching and unlatching of downhole well tools is adapted for use in a mandrel interconnected with a tubing string of a well, the mandrel forming a downwardly directed internal shoulder. The latch mechanism inco... | 05/09/1989 |
| 4823882 | Multiple-set packer and method A packer assembly is provided suitable for multiple setting and unsetting operations in a well bore during a single trip to seal the annulus between the interior walls of the well bore and a tubing string. Thge packer is set by dropping a metal ball which... | 04/25/1989 |
| 4520870 | Well flow control device A well flow control device for use in an oil and/or gas well tubing string for communicating between the tubing string and the annulus. A tubular body having a plurality of openings with a sleeve telescopically movable in the interior of the body and init... | 06/04/1985 |
| 4365671 | Well system A well completion system particularly adapted for pumpdown operation in which landing of a standing valve in a foot valve automatically opens a foot valve and in which withdrawing of the standing valve automatically closes the foot valve and in which prov... | 12/28/1982 |
| 3955624 | Safety valve for controlling flow in a flow conductor Well tools comprising a go-devil actuated well safety valve, a locking assembly for releasably locking the safety valve at a desired depth in a well, running and pulling tools for installing and removing the safety valve, a go-devil ball for closing the s... | 05/11/1976 |
