Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7174256 | Magnetoinductive flowmeter and measuring method for a magnetoinductive flowmeter The magnetoinductive flowmeter measures the flow volume of a medium traveling through a measuring tube, with a magnet that serves to generate a magnetic field permeating the measuring tube that has a magnetic-field component that extends perpendicular to the directi... | 02/06/2007 |
| 6883391 | Rotary sensor In a rotary sensor according to the present invention, when a casing expands or contracts by changes in the external environment, relative sliding operation is performed between a rotator and a first elastic member in an axial direction of a drive shaft, so that a g... | 04/26/2005 |
| 6532833 | Torque measuring piezoelectric device and method A method and apparatus are described for noncontact measurement of torque applied to a torque-bearing member such as a shaft. The method involves the use of a piezoelectric transducer mechanically coupled to the shaft for rotation therewith, and having el... | 03/18/2003 |
| 6182516 | Low-cost, easy-to-use, dynamometer A disk 10 attached to the shaft 12 of an engine 6 is loaded by a disk brake 14 having hydraulic fluid under pressure applied thereto by a manual pump 35. The disk brake is mounted on a pendulum 23 which is suspended freely on a shaft 25 which is coaxial w... | 02/06/2001 |
| 5429004 | Inertia flywheel assembly for a dynamometer An inertia flywheel assembly for a dynamometer is portable and provides for accurate testing of the performance of automotive vehicles. In a motorcycle application a flywheel (15) is mounted between swing arms (14) and supported on axle (18) by eccentric ... | 07/04/1995 |
| 5404759 | Acoustically quiet, passive load for testing low-speed motors The load absorbing device is housed in a fluid filled housing for cooling d vibration damping purposes. The device includes a rotating disc coupled to the motor output shaft, and brake calipers for engaging the disc periphery to incrementally increase the... | 04/11/1995 |
| 5086647 | Power testing apparatus A power testing apparatus includes a brake mechanism which is operated to brake an inertial load adjusting flywheel at a desired timing. A clutch is provided for controlling transmission of an inertial load from the adjusting flywheel to a tested object. ... | 02/11/1992 |
| 5003829 | Energy absorbing device and torque measuring apparatus therefor In a dynamometer, an internally cooled disc is utilized in a braking system which can apply a large amount of torque for an extended period of time. A hollowed braking disc comprising individual cooling cells is employed. Cooling liquid is injected into t... | 04/02/1991 |
| 4873868 | Force measurement sensor integrated on silicon, and a method of manufacture A mechanical magnitude sensor integrated on silicon, and a method of manufacture. The sensor comprises a bendably deformable conductive blade (4) whose free end (43) constitutes the first plate of a variable capacitor whose fixed second plate (24) is cons... | 10/17/1989 |
| 4790606 | Apparatus for the measurement and/or regulation of a braking force and/or of a braking torque An apparatus which measures and regulates the braking torque of a brake unit in long-term operational use. The brake unit includes both a brakable element and the braking device. An output signal from at least one temperature-dependent measuring element, ... | 12/13/1988 |
| 4728102 | Resistance indicator for frictionally resistant exercise device A resistance or load indicator for use with an exercising unit, in particular one which has motions or movements in opposite directions for exercise, such as reciprocal arm or leg exercisers, and in particular one which can be used with coordinated moveme... | 03/01/1988 |
| 4718286 | Dynamometer system for rotary blade-type lawm mowers A dynamometer system for applying a controlled variable operating load against the blade of a rotary-type lawn mower while the mower is in stationary operation atop the system. The system includes a frame for supporting and securing the lawn mower thereup... | 01/12/1988 |
| 4649757 | Device for calibrating a machine tool Device for calibrating a machine tool including a tool (32) rotating about its axis XX', comprising a tubular-shaped support with an annular fixing component (3) connecting it to the housing (1) of the machine tool so that its central opening forms an ext... | 03/17/1987 |
| 4630818 | Torque metering device for a bicycle-type ergometer The invention relates to a torque metering device for a bicycle-type ergometer, in which ergometer the braking force is steplessly adjustable and in which the rotating movement is compensated by means of a flywheel. The rotating movement of the flywheel c... | 12/23/1986 |
| 4483204 | Prony brake dynamometer An improved power absorption device of the general Prony brake design is capable of either applying to a rotating shaft either a fixed force or a force proportional to its rotational speed or for measuring mechanical power transferred to a rotating shaft ... | 11/20/1984 |
| 4475408 | Torque measuring device A torque measuring device is described which provides for measurement of the rotative force applied against a shaft by engaging the shaft and an electric friction brake attached to a load cell for registering the force, and a reduced friction device for a... | 10/09/1984 |
| 4419890 | Bicycle ergometer A bicycle ergometer, where with the aid of a spring balance the braking effect of a band brake on the rim of a flywheel is measured and the braking effect may be regulated. The band, spring and indicator are normally fastened to a ball-bearing fork in the... | 12/13/1983 |
| 4412455 | Method and apparatus for measuring the torque or power of a boat motor in place A process and a portable apparatus for performance testing of boat motors, especially with outboard drives. A brake disc is rotatably journalled in a hub of a supporting element which carries brake callipers and a lever arm, at the outer end of which a fo... | 11/01/1983 |
| 4291872 | Ergometric exerciser with fluid-actuated indicator Bicycle-type ergometric exerciser having pedal-actuated wheel, adjustable caliper brakes engaging the wheel and mounted on a pivoted frame for movement by the wheel according to work input by operator in pedaling wheel, a gauge indicating work rate input,... | 09/29/1981 |
| 4217775 | Load testing apparatus The invention relates to a load testing apparatus comprising disks, a rotary shaft connectable with a machine to be tested, disk brakes for braking the disks, and a detector adapted to indicate the amount of load applied to the machine to be tested by det... | 08/19/1980 |
| 4196617 | Method and apparatus for transmitting power from a motorcycle A motorcycle power take-off drive system is disclosed for driving a dynamometer from either a chain drive or a shaft drive motorcycle having either right or lefthand chain or shaft drive connections. A support housing is straddled by the rear frame elemen... | 04/08/1980 |
| 4150559 | Variable rate test joint A device for simulating the tightening rate of a threaded fastener and for varying the joint rate. The torque applied to the joint is determined. The device is suitable for determining the torque scatter of the torque applied to the simulated joint by mea... | 04/24/1979 |
| 4109519 | Dynamometer employing multiple disc brake assemblies A disc brake dynamometer including a base, a shaft adapted to be coupled to a rotary motive source to be tested, a pair of axially spaced, fluid-cooled, disc brakes concentric about the shaft and each having two relatively rotatable members, one of the me... | 08/29/1978 |
| 4092855 | Dynamometer and coupling for a test stand A dynamometer including a housing comprised of first and second parts relatively rotatable about an axis and defining a chamber, at least one brake element within the chamber carried by each part, the brake elements being in adjacency and relatively movab... | 06/06/1978 |
| 4062233 | Dynamometer A dynamometer is provided having a housing mounted to allow at least partial rotational displacement about its longitudinal axis, with a frictional engaging means connected thereto for engaging the external surface of a rotatable drum. This drum, which is... | 12/13/1977 |
