Bizarre Patents
An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7255008 | Vibration-testing system Horizontal vibration shakers 21a and 21b are disposed opposite to each other on both sides of a vibration table 4, and either of the horizontal vibration shakers, e.g. 21a is arranged vertically movable so as to produ... | 08/14/2007 |
| 7051593 | Vibration testing apparatus and a method of vibration testing In order to provide a vibration testing apparatus which can have a large diameter without introducing undesirable rigid vibration modes, the vibration testing apparatus 1 comprises a support 2, at least one electromagnetic vibration generator 12... | 05/30/2006 |
| 6257067 | Vertical direction spacecraft vibration test system with pseudo-free boundary conditions A method, apparatus, for subjecting a test object to vibrational energy testing is disclosed. The apparatus comprises a rotatable joint such as a hydrostatic ball joint for transmitting energy from a force generator to the test object, and a support struc... | 07/10/2001 |
| 5435168 | Transducer testing system for low frequency vibrations A transducer testing system for low frequency vibrations incorporates an electric motor/gearbox assembly 16 with an output shaft 18 and mechanical means for converting low frequency shaft rotation of the output shaft 18 to uniform low frequency sinusoidal... | 07/25/1995 |
| 5355732 | Vibrating table with driven unbalanced shafts A vibrator includes a vibrating table; a plurality of driven unbalanced shafts disposed within the vibrating table and arranged in pairs; and a plurality of unbalanced bodies. A separate unbalanced body is connected to each unbalanced shaft. The unbalance... | 10/18/1994 |
| 5197333 | Apparatus to test the resistence to vibration of brake beams for railway car truck assemblies This invention relates to an apparatus to test the resistance to vibration of brake beams for railway car truck assemblies having a union frame, a side frame at each end of the union frame, each having front and rear ends, and a pair of beam carriers, eac... | 03/30/1993 |
| 5187982 | Vibration controlled experimenting device provided with a motor with an imbalanced rotor A controlled vibration experiment device having a vibration model structure to simulate actual mechanical vibration and to monitor and analyze the vibration by a computer monitor. The device has a base plate, a supporting frame, a T-shaped sliding rail, a... | 02/23/1993 |
| 5042306 | Multiple direction vibration fixture An apparatus for simulating a rocket launch environment on a test item undergoing centrifuge testing by subjecting the item simultaneously or separately to vibration along an axis of centripetal force and along an axis perpendicular to the centripetal for... | 08/27/1991 |
| 5005439 | Inertia force generating device An inertia force generating device comprises two pairs of coaxial counterrotating eccentric rotors, whose rotational speeds and relative positons are automatically and continuously controlled so as to cancel undesirable vibrations produced by another devi... | 04/09/1991 |
| 4875374 | Multiple axis vibration test platform A multiple axis vibration test platform including a plurality of actuator arms connected to respective drive shafts with eccentric ball joints at first ends thereof, and at the opposite ends thereof to the bottom surface and side walls of the test platfor... | 10/24/1989 |
| 4709362 | Oscillating orbital vibrator An orbital vibratory mass is used for generating seismic signals and the like. An annular reaction mass is mounted on a crank by means of bearing. The reaction mass orbitally oscillates relative to the axis of the crank shaft without rotating. This reduce... | 11/24/1987 |
| 4507953 | Abrasion testing machine An abrasion testing machine has a vibrating horizontal platform which supports a six pack of test specimens, such as beverage cans. Hydraulic cylinder controlled pressure plates are applied to the sides of the array of test specimens and to the top of the... | 04/02/1985 |
| 4364275 | Method and apparatus for measuring phase angles of oscillatory motion of vibratory machinery A method of determining the phase angle of a vibrating mechanism using line segments of selected angles. The motion of the line segments on the vibration mechanism is observed and the phase angle of the vibratory mechanism is determined using information ... | 12/21/1982 |
| 4327814 | Rotating eccentric weight apparatus and method for generating coded shear wave signals A rotating eccentric weight apparatus and method for generating coded shear wave signals for use in seismic exploration. The apparatus includes a rotatable eccentric and a position sensor capable of detecting each instant that the eccentric passes a parti... | 05/04/1982 |
| 4180458 | Vibratory screen having noise level reduction by isolation A relatively quiet vibrating screen has a rotatable eccentric mass drive supported on the screen body by isolator mounts which transmit vibratory forces at shaker frequency unrestrained to the screen body and attenuate forces at higher harmonics of shaker... | 12/25/1979 |
| 4143737 | Rotating eccentric weight seismic sources and a seismic exploration method Compact, lightweight, rotating eccentric weight seismic sources and a seismic exploration method particularly suitable for use in relatively inaccessible onshore regions. The source includes an eccentric weight rotatable about an axis and a sensor to dete... | 03/13/1979 |
