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 |
| 8069725 | Gravity gradiometer with torsion flexure pivots A quadrupole responder for an OQR-type gravity gradiometer comprises a housing, and a mass quadrupole positioned within the housing. The mass quadrupole has a pair of sides, and also has a center of mass between the sides. The quadruple responder further comprises a... | 12/06/2011 |
| 7401514 | Asymmetric torsion balance gravimeter The invention relates to a gravity measurement apparatus comprising a torsion balance bearing a test mass. The torsion balance has a predetermined center of mass and is rotatable around a predetermined rotation axis, wherein the torsion balance is asymmetric in such... | 07/22/2008 |
| 6715334 | Apparatus and method for manufacturing thick-walled bent pipe An apparatus and a method for manufacturing a thick-walled bent pipe with a simple structure at low production cost, which has durability and can manufacture an elbow material for piping with higher size accuracy, are provided. For this purpose, the manufacturing ap... | 04/06/2004 |
| 6668646 | Gravity meter A gravity meter comprises a casing, a vacuum tube mounted in the casing in a vibration-free manner, a sensor mechanism mounted within the vacuum tube, the sensor mechanism comprising two masses of different size acting on the respective arms of a beam bal... | 12/30/2003 |
| 5018382 | Apparatus for measurement and calculation of moment of inertia An apparatus for measuring moment of inertia incorporating a torsional pendulum and an analog electronic circuit. The circuit measures the period of oscillation, sets a scaling factor equal to the torsional coefficient of the resilient member, and compute... | 05/28/1991 |
