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 |
| 7612682 | Locator with removable antenna portion A locator is disclosed that includes a base module and an antenna module. The base module and antenna module are coupled both mechanically and electrically at a joint. Such an arrangement allows for easy stowage and shipment of the locator as well as the ability, by... | 11/03/2009 |
| 7203322 | Acoustic detector with noise cancellation An acoustic detector that includes active noise cancellation is presented. An acoustic detector converts sound waves, which include sound waves of interest as well as noise, to an electronic signal. An operator listens for a characteristic sound, for example the sou... | 04/10/2007 |
| 7137308 | Sliding pipe plug A sliding pipe plug for working on and testing pipes is presented. The sliding pipe plug includes a center portion and a gasket disposed about the central portion. When towed through the pipe, the sliding pipe plug maintains a substantial seal against water flowing ... | 11/21/2006 |
| 7120564 | Buried line locator with integral position sensing A device for detecting and compensating field distortion in underground line locators by means of mapping the field-strength of the field generated by electrical currents within the buried line. Signals from the underground structure can be mapped with respect to th... | 10/10/2006 |
| 7113124 | Centerline and depth locating method for non-metallic buried utility lines A locator capable of tracking buried, non-metallic utility lines (fiber optic, gas, water, waste, conduits) using ground penetrating radar (GPR) and an inertial position sensor is described. In some embodiments, a tracking filter is applied to a hyperbolic trajector... | 09/26/2006 |
| 7091872 | Controlled power source for underground line location A transmitter for a line locator system that controls the electrical current, voltage or power applied to the target line is disclosed. Control of the electrical output of the transmitter can be achieved passively or by means of a feedback control system. A transmit... | 08/15/2006 |
| 7062414 | Method and apparatus for digital detection of electromagnetic signal strength and signal direction in metallic pipes and cables A new digital architecture for metallic pipe and cable locators, providing accurate estimation of the fundamental locate parameters, electromagnetic signal strength and signal direction, and utilizing a nested Digital Phase-Locked Loop (DPLL) structure is disclosed.... | 06/13/2006 |
| 7057383 | Method for decoupling interference due to bleedover in metallic pipe and cable locators When cables run side by side over a longer distance, an alternating-current signal used for cable location can couple or ‘bleedover’ to neighboring cables. The coupled current flowing in the neighboring cable creates field distortion and makes position determina... | 06/06/2006 |
