Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7926370 | Rotation and extension/retraction link mechanism A rotation and extension/retraction link mechanism which realizes a rotary joint having a virtual rotation axis is provided. A rotation and extension/retraction link mechanism 1 is configured so that a first link 5 having a first virtual center line | 04/19/2011 |
| 7438027 | Fluid transfer in reciprocating devices The disclosure relates to fluid working devices including reciprocating internal combustion engines and pumps. A number of arrangements for pistons and cylinders of unconventional configuration are described, many intended for use in IC engines operating without coo... | 10/21/2008 |
| 7331496 | Hammer drill A hammer drill (2) includes a clockwise and counterclockwise driven tool spindle (28), a drive pinion (70) operatively connectable with the tool spindle (28) for transmitting a torque thereto, a separate control handle (6) for sele... | 02/19/2008 |
| 7302871 | Oscillation 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 |
| 7260862 | Baby bottle and nipple cleaning apparatus Apparatus 10 discloses a baby bottle 44 and nipple 46 cleaner having a plurality of interchangeable brush members 14 that attach to an electrically operated handle 12 that serves to oscillate or rotate the brushes to more effective... | 08/28/2007 |
| 7258480 | Apparatus for mixing liquid samples using a two dimensional stirring pattern A method for rapidly and uniformly mixing solutions within a biochemical analyzer by rapidly and repeatedly moving a sampling probe in a two-dimensional boomerang-curved pattern within the solution. ... | 08/21/2007 |
| 7191848 | Rolling hammer drill A hammer drill with rolling contact at the contact surfaces for transmission of axial force between a drive shaft and wave race. By using roller bearings, line contact is obtained. The area of contact is thus close to zero as opposed to a relatively large area in en... | 03/20/2007 |
| 7125323 | Clutch device for a rollers' swinging mechanism of a belt sander A clutch device for a rollers' swinging mechanism of a belt sander, which includes a roller set, a swinging gear set, is composed of a control bar, a linking member and a clutch member. The roller set is driven by the swinging gear set to carry out an axial movement... | 10/24/2006 |
| 7121160 | Mechanical transmission A constant power mechanical transmission with seamless, ripple free, infinitely variable torque multiplying outputs comprises an input shaft and an output shaft. The input shaft is coupled to a pair of oscillating levers whereby rotation of the input shaft causes os... | 10/17/2006 |
| 7117827 | Means for treatment of the gases of combustion engines and the transmission of their power The disclosure relates to fluid working devices including reciprocating internal combustion engines and pumps. A number of arrangements for pistons and cylinders of unconventional configuration are described, mostly intended for use in IC engines operating without c... | 10/10/2006 |
| 7117758 | Vibration 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 |
| 7040812 | Bearing assembly and method of manufacturing a bearing assembly A bearing assembly and method of manufacturing a bearing assembly exposable to transmission fluid, the method comprising the steps of: providing a bearing housing (2) having: a base; an annular wall (11) upstanding from the base having an inner (6 | 05/09/2006 |
| 7013938 | Shiftable rolling feed device for a wood planing machine A drive shiftable rolling feed device includes front and rear feed rollers mounted on a support carriage of a wood planing machine for feeding a workpiece, a reduction gear train disposed to convert a primary drive of a cutter shaft into two reduction drives and cou... | 03/21/2006 |
| 7000437 | System and method for economically viable and environmentally friendly central processing of home laundry An economically viable process and system for centrally processing multiple loads of laundry with minimum environmental impact. A system and method of laundering whereby successive loads of laundry may be washed while continuously providing effective soil removal co... | 02/21/2006 |
| 7001117 | Rotary cutting apparatus A rotary cutting apparatus comprises a rotary shaft assembly having an axis and adapted to hold a cutting tool coaxial with the axis and, a feed mechanism for moving the cutting tool held by the rotary shaft assembly along the axis of the rotary shaft assembly. The ... | 02/21/2006 |
| 6925974 | Wobble plate engine A wobble plate engine includes a cylinder block, a plurality of pistons, a drive shaft, a weight, an oscillating member, a plurality of rods connecting the pistons to the oscillating member, a pair of bevel gears and a plurality of thrust bearing assemblies wherein ... | 08/09/2005 |
| 6902525 | Dual-motion auto-stimulation device A device designed to take rotary power from an external power source such as a cordless electric screwdriver and transmit that energy into both rotary and reciprocating linear activation of sexual devices used by both males and females for the purpose of masturbatio... | 06/07/2005 |
| 6865968 | Cam apparatus and pick and place apparatus utilizing the same There is provided a pick and place apparatus including a cam apparatus which comprises an input shaft (5); a first output shaft (7); rotational motion converting cam mechanism (21); a slider member (9); a relative rotation regulating cam ... | 03/15/2005 |
| 6718838 | Rotary drive mechanism and appliance timer/sequence switch utilizing same A rotary drive mechanism for use with a timer/sequence switch in an appliance is presented. The mechanism converts linear motion from a cam tracker following a programmed cam track to rotary motion to drive a vent damper in an appliance. The rotary motion output is ... | 04/13/2004 |
| 6713920 | Linear actuator using two rotors A linear actuator capable of inducing a linear motion as well as a rotational motion using only two rotors is provided. The linear actuator includes: first and second rotors connected to respective driving force sources; a linear motion unit formed on the first roto... | 03/30/2004 |
| 6679131 | Cam apparatus and pick and place apparatus utilizing the same There is provided a cam apparatus which operates an output shaft by converting a continuous rotational motion at a constant speed of an input shaft into a complex rotation super-positioning an oscillating rotational motion and a rotational motion at an in... | 01/20/2004 |
| 6666241 | Wood planing device for a wood planing machine A wood planing device includes a support carriage movably mounted on a wood planing machine, and a rotatable shaft rotatably mounted on the carriage and having a coupling segment. A coupling sleeve surrounds the shaft and is movable between engaging and d... | 12/23/2003 |
| 6626054 | Swashplate design A rolling element or ball swashplate has a part-spherical surface covered in latitudinal grooves and ridges, in cross-section resembling parts of a spur gear wheel. The ball is mounted on a well-known rolling element bearing on its polar axis. The bearing... | 09/30/2003 |
| 6594619 | Apparatus and method for predicting failures of spinning disks in turbo-machinery An apparatus is described for detecting the early signs of cycle-induced fatigue and thereby predicting failure of the rotating disk in turbo-machinery. It identifies asymmetrical growth of hub-blade diameter as a predictor of incipient crack growth. Tip ... | 07/15/2003 |
| 6584866 | Working tool, in particular rammer for soil compaction A working tool, in particular a soil rammer or a hammer, has two masses that may be linearly moved back and forth with respect to one another, namely a top mass which comprises a driving motor and a ramming or striking working mass which can be moved by t... | 07/01/2003 |
| 6505528 | Device for fast taking out and putting in The invention is a device for fast taking out and putting in, especially the device can fast take out a chip from a wafer to put in another chip receptacle, wherein, the invention includes a gear set, which consists of a first big gear, a second big gear ... | 01/14/2003 |
| 6478681 | Magnetic couplings for imparting simultaneous rotary and longitudinal oscillations Magnetic couplings impart simultaneous reciprocal rotary and longitudinal motions or oscillations to a work element. In preferred embodiments, the magnetic couplings include a drive shaft, an output shaft coaxially aligned with the drive shaft relative to... | 11/12/2002 |
| 6460424 | Combined vertical and rotational motion indexing mechanism A mechanical indexing device. The device comprises a mechanism for converting linear motion into many different combinations of linear and rotary motion, whereby an object can be moved along a desired linear path and indexed through a desired arc of rotat... | 10/08/2002 |
| 6327923 | Working tool, in particular soil rammer or hammer A working tool, in particular a soil rammer or hammer, has two masses that may be linearly moved back and forth with respect to one another, namely, a top mass which has a driving motor and a ramming or striking working mass which can be moved by the moto... | 12/11/2001 |
| 5992485 | Sawing machine and sawing processing method for a plate member A workpiece processing apparatus for processing a predetermined plate member and a sawing process method therefor. A workpiece processing apparatus which includes a workpiece mounting assembly for receiving a workpiece; a tool assembly having a tool mount... | 11/30/1999 |
| 5916014 | Oscillating belt/spindle sander An oscillating belt sander or spindle sander is disclosed. The sander includes a motor shaft that extends upwardly through a worktable that supports a workpiece. The motor shaft supports a belt sander or spindle sander sanding surface. A combined motor an... | 06/29/1999 |
| 5820312 | Device for transmitting impulse-like blows to a continuously rotatable tool bit A device for transmitting impulse-like blows to a continuously rotatable tool bit (6) is formed as an axially extending adapter (1) having a first chuck for the tool bit (6) and being insertable at a trailing end into a second tool bit chuck in a manually... | 10/13/1998 |
| 5705733 | Apparatus for monitoring liquid levels and methods for calibrating same Apparatus for monitoring the height of the liquid in a liquid-containing tank equipped with a height gage including an adjusting disc coupled to the gage shaft, an increment wheel coupled to the adjusting disc and being rotatable in response to rotation o... | 01/06/1998 |
| 5685148 | Drive apparatus A drive apparatus for reversible movements of an actuator is provided with a drive element made from a shape memory alloy with one-way effect. The drive element acts upon a lever rotatable about an axle in opposition to the force of a resetting element, w... | 11/11/1997 |
| 5676497 | Power drill-saw with simultaneous rotation and reciprocation action The invention disclosed herein is a simple but versatile sawing device for effectively and efficiently cutting or sawing hard solid materials. A driving mechanism consisting of three slidably-associated elements converts a rotational force into a dual rot... | 10/14/1997 |
| 5549507 | Combined motor and mechanical drive for use in oscillating spindle sander A combined motor and mechanical drive that is used with an oscillating spindle sander is disclosed. The oscillating spindle sander has a worktable for supporting a workpiece. A spindle extends upwardly through the worktable and has a sanding surface. An e... | 08/27/1996 |
| 5504960 | Electric toothbrush A handle component (1) of an electric toothbrush protrudes from the end of a hollow shaft (3), which holds a drive shaft (9) coaxially therein. A brush attachment (4) with rotatable bristle tufts (6) is disposed on the hollow shaft (3) in such a way that ... | 04/09/1996 |
| 5492457 | Unidirectional flow pump with rotary drive A hydraulic pump provides unidirectional fluid flow regardless of the direction of rotation of the rotary shaft of the pump. The rotary shaft is affixed to a rotating arm, which arm includes a spherical bearing in the outer end thereof which secures to th... | 02/20/1996 |
| 5412889 | Ornamental display assembly having reciprocating and rotating decorative elements An ornamental display assembly incorporates a pair of coaxial support members and has a decorative element mounted on each support member. A cam drive system provides one support member with reciprocating motion while providing the other support member wi... | 05/09/1995 |
| 5402604 | Oscillating spindle sander An oscillating spindle sander having a spindle rotatably mounted in a cabinet. An external end of the spindle is adapted to receive a sanding drum. An upper cam pulley is fixedly attached to the spindle and a lower cam pulley is rotatably attached to the ... | 04/04/1995 |
