U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Celebrity Inventors

Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.

Newsletter  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.

 

Class 74/61 - Unbalanced weights


Subclass of Class 74 - Machine element or mechanism
Definition: Mechanisms, in which the mechanism involved makes use of
No. of patents: 217
Last issue date: 01/31/2012


1            
NumberTitleIssue Date
8104365Vibration generator
A vibration generator has two groups of shafts, on which at least two groups of imbalances are disposed, and which are connected with at least one drive, by means of which they are put into rotation. The shaft groups are connected with the at least one drive in such...
01/31/2012
7375436Gyroscope-based electricity generator
Techniques and devices that use precession of at least one spinning gyroscope to drive a motor generator to produce electricity from an oscillating motion that causes the precession of the gyroscope. A buoy may be used to produce the oscillating motion from the moti...
05/20/2008
7331469Vibratory separator with automatically adjustable beach
A vibratory separator having a basket for supporting screen apparatus for treating material, the basket pivotably mounted on a base, vibratory apparatus connected to the basket for vibrating the basket, the material forming a pool on the screen apparatus, and a beac...
02/19/2008
7320558Apparatus for screeding uncured concrete surfaces
A screeding apparatus and method for screeding and smoothing an uncured concrete surface includes a vibrating member and a grade setting device adjustably mounted to said vibrating member. The screeding apparatus may include a wheeled support which at least partiall...
01/22/2008
7302871Oscillation generating device
The invention relates to an oscillation generating device for use in a soil compacter with a tipping moment compensation device. A second unbalance shaft pair with oppositely rotating unbalance shafts is arranged adjacent to a first unbalance shaft pair as a tipping...
12/04/2007
7278540Adjustable basket vibratory separator
A vibratory separator having a base, a basket movably mounted on the base and for supporting screen apparatus for treating material introduced into the vibratory separator, the basket on a base and pivotable with respect thereto, vibratory apparatus connected to the...
10/09/2007
7270106Free-planetary gear moderated nutating (athena) engine
In a nutating engine (or more generally a rotary displacement device) the cycling of combustion occurs between inner and outer spherical surfaces. The combustion chambers are additionally defined only by the surfaces of teeth of specially designed gears. These gears...
09/18/2007
7270025Adjusting device for regulating the eccentric moment of a roller drum eccentric shaft
An adjusting device (11) is for regulating the eccentric moment of an eccentric shaft (2) of a roller drum (1) through the influence of an axially directed force transmitted by a force transmission mechanism (12) to a turning device (5...
09/18/2007
7253545Vibratory screening machine with single motor mounted to produce linear motion
Disclosed within is a fist bracket comprising a base and a circumferential portion extending from the base in which the circumferential portion comprises an outer surface and an inner surface and the outer surface comprises a curved section and a planar section. Als...
08/07/2007
7252618Rack and pinion transmission for a pintle valve
A rack and pinion gear train actuator for a pintle valve. A motor shaft has a pinion gear that engages a large reduction gear having an integral hub gear. The hub gear is a planet gear for a ring gear segment that pivots on a shaft and includes a pinion gear segment...
08/07/2007
7251449Rotating member
One embodiment of a mechanism may include a member having a first axis and a surface non-concentric with said first axis, a first gear rotatably mounted on said member at a second axis different from said first axis, and a device coupled to either of said member or ...
07/31/2007
7240800Vibratory sand reclaiming apparatus having normal and reject modes
An attrition mill for reclaiming foundry sand from deposited material having lumps of used foundry sand and included material includes a housing defining a chamber for receiving the lumps of used foundry sand and included material. A base is disposed within the hous...
07/10/2007
7237326Device for applying balancing weights to vehicle wheels in wheel balancing machines
A device for applying balancing weights to vehicle wheels in wheel balancing machines, comprising: a detector for the position of an indicator that can slide on rectilinear guides with respect to a wheel supported rotatable on the frame of a balancing machine; remov...
07/03/2007
7213479Vibratory mechanism and vibratory roller
A vibratory mechanism includes vibratory shafts, which are stored within a roll and are arranged symmetrically across a rotation axis of the roll, fixed eccentric weights fixed to respective vibratory shafts, rotatable eccentric weights rotatably attached to respect...
05/08/2007
7182207System and process for break detection in porous elements for screening or filtering
A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the...
02/27/2007
7171866Controllable vibration generator
A vibration generator comprises two unbalance shafts, which are positively coupled in a contra-rotative manner and whose relative phrase position can be shifted by a phase shifting device. Each of the unbalance shafts supports a main unbalance mass and a partial unb...
02/06/2007
7168890Eccentric vibration system with resonance control
The present invention may be embodied as an eccentric vibration system comprising a major eccentric member, a minor eccentric member, first and second motor assemblies, and a transmission system. The transmission system operates in a first mode when a torque of the ...
01/30/2007
7165469Shift rod piston seal arrangement for a vibratory plate compactor
An easily accessible phase adjustment mechanism for a vibratory plate compactor includes an improved seal arrangement to protect against leakage of internal lubricating oil into the hydraulic cylinder providing fluid pressure to the adjustment mechanism. An easily d...
01/23/2007
7132817Unbalance dynamic load generator
The invention relates to an unbalance dynamic load generator comprising at least one pair of eccentric rotating masses (M) which are symmetric with respect to a plane and whose motion is controlled by at least one control signal generated by a control module as a fu...
11/07/2006
7121762Apparatus for screeding uncured concrete surfaces
A screeding apparatus for screeding and smoothing an uncured concrete surface includes a vibrating member and a grade setting device adjustably mounted to said vibrating member. The screeding apparatus may include a wheeled support which at least partially supports ...
10/17/2006
7117758Vibration generator for a soil compacting device
The invention relates to vibration generator for a soil compacting device referred to as a towed vibrating device. The vibration generator has two parallels arranged unbalanced shafts that each support a fixed and a freely rotating unbalanced mass. An unbalance adju...
10/10/2006
7104515Flexure elastomer antenna isolation system
A vibration isolation system (100) for a payload (102). The vibration isolation system provides a level of vibration isolation for all vibration translational and rotational components, while minimizing the moment of the payload mass relative to the is...
09/12/2006
7089823Vibratory mechanism controller
A controller for use in a vibratory mechanism includes an amplitude control circuit that generates an amplitude control signal that varies from a minimum value to a maximum value. The vibratory mechanism is adapted to vibrate at an amplitude based on an amplitude co...
08/15/2006
7042557Sample supplying device for a dry particle-size distribution measuring apparatus and method
A dry particle-size distribution measuring apparatus and method is provided for suspending a plurality of bristle members across a support surface of a dispensing trough with bristles being arranged to contact and disperse any clusters of particles to a primary stat...
05/09/2006
7017679Device for the continuous adjustment of unbalance of steerable vibration plates
The invention relates to steerable vibration plates that are set vibrating by rotating unbalanced masses. By twisting the unbalanced masses relative to one another the resulting forces and their direction of action can be changed, thereby influencing the travel spee...
03/28/2006
6997325System and process for break detection in porous elements for screening or filtering
A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the...
02/14/2006
6976805Light weight apparatus for screeding and vibrating uncured concrete surfaces
A lightweight screeding apparatus for screeding and smoothing an uncured concrete surface includes a concrete surface working member, such as vibrating beam or member, and a grade setting device adjustably mounted to said vibrating beam. The screeding apparatus may ...
12/20/2005
6969213Roadway for decelerating and/or accelerating a vehicle including an aircraft
A roadway upon which a vehicle travels is provided in which the vehicle is decelerated. The roadway includes: a movable surface extending in a direction of the vehicle's travel; and a potential energy storage mechanism operatively connected to the movable surface fo...
11/29/2005
6953304Lightweight apparatus for screeding and vibrating uncured concrete surfaces
A lightweight screeding apparatus for screeding and smoothing an uncured concrete surface includes a concrete surface working member, such as vibrating beam or member, and a grade setting device adjustably mounted to said vibrating beam. The screeding apparatus may ...
10/11/2005
6953279Paint mixer with damping frame
A paint mixing machine having at least two axes for spinning either of a cylindrical or rectangular paint container to mix the paint in the container. The machine includes a stationary base frame carrying a mixing apparatus and an intermediate frame between the stat...
10/11/2005
6929421Vibratory mechanism and method for lubricating the same
A vibratory mechanism is provided for a compacting work machine. The vibratory mechanism includes at least one eccentric weight rotatably positioned within a housing. Pressurized fluid is introduced into the vibratory mechanism at an inlet passage. A means for movin...
08/16/2005
6918492Baffle assembly for a sealed shaft on a vibratory apparatus
A sealed wheel case for use on a vibrating aggregate processing device comprises a housing sized to hold a rotatable wheel supported on a shaft, the housing having a base, a peripheral sidewall, and a cover. The cover includes an aperture adapted to receive therethr...
07/19/2005
6869375High output force actuator for an active vibration control system
An active vibration control system provides a mass which is movable through a large excursion while minimizing the system size in two of three dimensions to compensate for sensed vibrations. A first rotating member is rotatable about a first axis and a second rotati...
03/22/2005
6829986Compactor
In a compressor comprising at least one traveling drum (4,4a,4b) rotatable about a drum axis (2), and an oscillation exciter supported in the drum (4,4a, 4b), the angular position of the oscillation exci...
12/14/2004
6799483Method and mechanism for converting vibration induced rotation into translational motion
The conversion of vibration induced rotation into translational motion is effected by engaging two threaded bodies with a gap between them and vibrating one of the bodies to induce rolling contact rotation between the threads of the bodies relative to each other and...
10/05/2004
6769838Variable vibratory mechanism
A vibratory mechanism includes first and second eccentric weights connected to a gearbox. The gearbox includes an inner shaft, an outer shaft and first and second planetary gear sets. The first and second planetary gear sets are connected to a motor that drives the ...
08/03/2004
6725736Rotatable eccentric arrangement
The present invention relates to a rotatable eccentric element for continuous adjustment of vibration amplitude, for use in, for example, the roll in vibrating rollers. In particular, the invention relates to a rotatable eccentric arrangement adapted for stepless ad...
04/27/2004
6707193Miniature motor with vibrator secured to an irregular portion of the motor shaft
In a miniature electric motor for generating vibration, an output portion of a rotary shaft is formed into an irregular shape in cross-section other than a circular shape in cross-section. An engaging hole having a predetermined shape in cross-section, which corresp...
03/16/2004
6694844Apparatus to recover energy through gravitational force
A gravity apparatus having a wheel-like, connected, encircling surface, includes an axially horizontal track which has an interior surface which weighted objects contact and are carried around the interior surface. The interior surface is a connected, enc...
02/24/2004
6637280Variable vibratory mechanism
A vibratory mechanism is provided with first and second motors connected to first and second eccentric weights. One of the first and second motors is operable to change a phase difference between the first and second eccentric weights to change a vibratio...
10/28/2003
1            
 
Sign InRegister
Username  
Password   
forgot password?