A speed barrier includes a heavy lower barrier and a lighter upper gate. The barrier and gate may normally be positioned to allow or to restrict passing of vehicles. The barrier is configured to receive and survive the main impact of a vehicle attempting to ram through the speed barrier. The gate and barrier are coupled to allow an extension or a retraction of the gate and barrier in unison. The barrier and gate are supported by left and right columns, and an upper end of the gate is supported b…

A speed plate device that is bonded to a Bernoulli plate for juxtaposition to a rotating flexible magnetic disk so that the flexible disk is rendered substantially rigid by a vacuum formed by the air between the speed plate/Bernoulli plate surface and the disk being urged outwardly under the influence of centrifugal force is disclosed. The speed plate device provides a method and means for spinning flexible magnetic media at high spins without any associated signal loss or modulation normally ex…

The invention relates to a speed filter for an internal combustion engine. Said filter contains a calculation rule (BV(i)), which is used to completely or partially eliminate a speed oscillation of the i-th order, thus improving the dynamics and the robustness of the speed control loop.

A speed sensor includes a magnetic pickup generating a cyclical output based upon passing teeth of a rotating gear. A counter counts the number of clock pulses that are generated during a measurement period of the cyclical output. The measurement period, in terms of cycles of the cyclical output, is varied based upon the number of pulses that were counted in a previous measurement period. Thus, at lower speeds, the number of clock pulses generated during fewer cycles is counted, while at higher …

A speed reducer having a fixed first member, a second member opposed to the first member, a pressing member and for inclining the second member and making it bear against the first member. The pressing member also presses the second member so that the bearing portion thereof may describe a circular locus. Also provided are an output shaft and a connecting member connecting the second member and the output shaft together.

A method and apparatus are provided for translating the speed of a drive shaft which is driven at a second speed to the speed of a driven shaft at a second speed, by providing a drive cam, a driven cam, and at least one reciprocating transfer element driven at a constant angular velocity and held in a slotted, fixed retainer, for interacting the two cams, such that the driven cam can be driven at the second speed by the drive cam driven at the first speed.

The present invention provides a combination tool for use by an individual workman, without resorting to assistance by another workman, for laying out horizontal and plumb lines in a confined space, such as that found in a shower stall, bathtub enclosure, or fireplace. The invention has a body in the shape of an isosceles triangle. Centrally positioned referencing levels align with the centerlines of each leg of the triangle. The referencing levels are duplicated in order to provide better accur…

A speed wrench includes an open end having a through portion connected to a shank of the wrench and a first jaw and a second jaw respectively extend from the throat portion. The first jaw has a first flat surface defined in an inside thereof and the second jaw has a second flat surface defined in an inside thereof. A throat recess is defined in the throat portion ad a first recess is defined in the inside of the first jaw, and a second recess is defined in the inside of the second jaw. An end of…

A speed control arrangement for a rotatable member driven by an energy source, such as a spring, whose driving torque can vary consists of an eddy current brake comprising an eddy current rotor driven with the rotatable member and a magnetic circuit coupled to the rotor to exert a braking effect. The magnetic circuit is carried by an arm movable relative to the rotor by unwinding of the spring (or other change in torque) to alter the coupling, and the braking effect, as the torque exerted by the…

A speed reducer is disclosed for providing large reductions in shaft speed in an efficient manner. The speed reducer is adapted to be mounted on the end of a source of input power, such as a motor or other prime mover, and comprises a gearing arrangement in a housing. A rotatable input shaft extends into the housing at one end from the motor, and a coaxial rotatable output shaft extends from the speed reducer from the other end of the housing. The gearing arrangement includes a driven internal g…