A medical device support system including a central shaft, an extension arm, a brake clamp assembly, and a brake actuator. The extension arm has a support for a medical device and a hub at its proximal end mounted to the central shaft for pivotable movement about the central shaft. The brake clamp assembly is secured in the hub for rotation therewith and includes first and second clamp portions. The brake actuator includes a cap, a plunger coupled to the cap for reciprocable axial movement relative to the cap, and a spring disposed between the cap and the plunger and configured to exert a biasing force against movement of the cap axially toward the plunger. The cap is adjustably mounted to the hub and coupled to the plunger to selectively urge the first and second clamp portions either toward or away from the central shaft to respectively increase or decrease a frictional braking force to the central shaft.

A medical device support system including a central shaft, an extension arm, and a brake assembly. The extension arm has a support for a medical device and a hub at its proximal end mounted to the central shaft for pivotable movement about the central shaft. The brake assembly is secured in the hub for rotation therewith and includes first and second discrete arc shape clamp pieces configured to flex toward and away from each other to respectively increase and decrease a frictional braking force to the central shaft. The hub includes a hub access opening configured to allow passage therethrough of at least one of the arc shape clamp pieces.

The present invention provides a system and method for providing drive shaft braking for an irrigation machine. According to an exemplary preferred embodiment, the present invention includes a system for providing drive shaft braking during the operation of an irrigation machine where the irrigation machine includes a drive system having a drive motor and a drive shaft. According to a preferred embodiment, the system in accordance with the present invention preferably includes a cam attached to the drive shaft, an extension arm having a first securing point, a securing arm having a second securing point and a spring attached between the first securing point and the second securing point. According to a further preferred embodiment, the system of the present invention preferably further includes a follower mechanism secured to the extension arm, which applies continual frictional pressure to the drive shaft in response to the force applied by the spring to the follower through the extension arm. According to a further preferred embodiment, an exemplary system according to the present invention functions to hold the drive shaft in place when rotational force is not actively applied to the drive shaft by the drive motor.

Components for an automatic motor vehicle transmission including a band brake drum, a clutch housing or hub having a seal surface or a clutch housing or hub utilized in a friction clutch assembly having a spline set. All of these components are fabricated of aluminum and the outer surface of the band brake drum, the housing or hub sealing surface and the area of the spline set includes a thin coating of a thermally sprayed steel material. The thermally sprayed steel material may be a low carbon steel such as SAE 1008 or 1010, a similar alloy, iron or other metal. The resulting components thus exhibit the weight saving of aluminum while providing excellent service life due to the enhanced strength and wear resistance provided by the thermally sprayed steel coating.

Components for an automatic motor vehicle transmission including a band brake drum, a clutch housing or hub having a seal surface or a clutch housing or hub utilized in a friction clutch assembly having a spline set. All of these components are fabricated of aluminum and the outer surface of the band brake drum, the housing or hub sealing surface and the area of the spline set includes a thin coating of a thermally sprayed steel material. The thermally sprayed steel material may be a low carbon steel such as SAE 1008 or 1010, a similar alloy, iron or other metal. The resulting components thus exhibit the weight saving of aluminum while providing excellent service life due to the enhanced strength and wear resistance provided by the thermally sprayed steel coating.

Motion control systems, devices, and methods are operable for controlling rotary motion of an actuated device. In one aspect, a motion control device is coupled between an external motive input (200) and a rotary output device (300). The motion control device has a brake core (110) configured to produce an electromagnetic field when an electric current is applied. A brake band (130) made of a magnetically responsive material surrounds the brake core (110) and is coupled to the brake core (110) when the electric current is applied. A rotor (120) that is coupled to both the external motive input (200) and the rotary output surrounds at least the perimeter of the brake band (130) and is coupled to the brake band (130) for rotation together. When the electric current is applied, the rotor (120) and the brake core (110) are thus rotatably locked together to control rotary motion generated by actuating forces imparted by the external motive input (200).

A brake apparatus for restricting rotation of a rotatable member of a mowing machine, thereby controlling rotation of a wheel of the mowing machine, includes a brake member fixable on the rotatable member, and a gripping member for engaging and disengaging the brake member for restricting or permitting rotation of the rotatable member. A thrust link is coupled to the gripping member such that movement of the thrust link causes the gripping member to engage or disengage a radially outer surface of the brake member. For example, the gripping member may be biasedly engaged with at least a partial circumferential extent of the brake member such that actuation of the thrust link causes disengagement of the gripping member from the brake member.

A rotation generation device is provided that includes: at least one pair of Cylindrical Containers having Chambers therein at each end to receive and discharge a fluid, the Cylindrical Containers interconnected via a tubular member and mounted essentially perpendicular to a Shaft; Threaded Caps with dual nozzles that screw on to each Chamber at the end of the Cylindrical Containers; two or more Pistons, each Piston interconnected to another Piston via a hollow tube, each Piston resides in a sliding relationship in a respective Cylindrical Container and wherein the hollow tube resides in the tubular member, the hollow tube having a length for a first of the two or more pistons to cause one of the Cylindrical Containers to receive fluid as the first piston slides within the respective Cylindrical Container, while a second of the two or more pistons causes another of the Cylindrical Containers to discharge fluid therein; a weight, residing and capable of moving laterally within the hollow tube; Pipes interconnecting adjacent Cylindrical Containers via the Cap nozzles; bellows within each Chamber of the Cylindrical Containers, wherein each bellow attaches on one end to a Piston and at an opposite end to the Chamber of the Cylindrical Container.

A hand-held work implement having a tool has a braking device for the tool that includes a brake band which wraps around a brake drum. The brake band and the brake drum undergo friction as they move relative to one another during braking. At least one of the band or drum comprises an austenitic steel, a duplex steel, super duplex steel, a nickel-base alloy or a cobalt-base alloy and has a base body and a marginal layer. The hardness of the marginal layer is approximately 150% to approximately 600% of the hardness of the base body and the carbide proportion in the marginal layer is less than approximately 0.5% by weight. A process for production of the foregoing includes diffusing carbon and/or nitrogen into a marginal layer at a temperature of less than 500 C.

A high density actuator, comprising a housing assembly composed of a first housing element containing a motor stator and a second housing element containing a gear reduction mechanism, a rotational core positioned at the center of the housing assembly, the rotational core being composed of a motor rotor and a transmission input operatively connected to the motor rotor, a transmission output positioned between the transmission input and the housing assembly, the transmission output forming an actuator output, a torque transfer output operatively connected to the actuator output and a center shaft connected to the torque transfer output in its center and in rotational contact with the first housing element, the center shaft passing through the transmission output, rotational core and second housing element to ensure proper radial and axial alignment.