Abstract: A damped boring bar assembly for damping the vibrations encountered during the high-speed boring of titanium, zirconium, and their alloys and the like, as well as steel and other metals, especially when the overhang, or ratio of the diameter to depth of the bored hole, is very small. The boring bar assembly has a weighted damper body contained within a hollow elongated case, the tool-holding end of which is closed and incorporates a shaped inner face with a frictional sliding surface. The damper body also has a frictionally slidable element which, with the damper body, holds a resilient element in compression in an internal cavity. The frictionally slidable element has a shaped face having a frictional surface thereon which engages the frictional surface of the inner face of the elongated case during vibration. The damping mechanism can be adjusted to handle different machining conditions.

Abstract: A hand operated hydraulic bicycle brake includes a brake pad holding unit which is actuated by a rolling diaphragm. A flexible fluid line couples a master cylinder located on the handlebars of the bicycle to the rolling diaphragm which controls a slave cylinder located adjacent to the rim of the front wheel of the bicycle. Actuation of the slave cylinder forces the brake pad into contact with the rim, and further actuation of the master cylinder causes the unit to pivot to bring a second brake pad into contact with the wheel rim.

Abstract: A vehicle suspension strut in which an internal elastomer sleeve is used as an air/oil separator bladder. Air pressure introduced to the chamber formed by the sleeve will expand the sleeve creating a pressure in the hydraulic fluid which acts on the area differential of the piston to create an adjustable lifting force for vehicle height control. Also as the strut works going into jounce, shock absorber oil displaced by the rod is taken up by the air volume trapped inside of the air sleeve. A main suspension spring is mounted to and around the reservoir tube of the strut which may be steerable.

Abstract: One pair of emergency drag brake units are at each end of a vehicle. Each unit comprises a leg member with a serrate-toothed, ground-engageable foot telescopically movable in a support member carried by the frame. An elastic member is shown in one embodiment urging the leg downwardly to maintain pressure on the ground. Hydraulic jacks move the feet to braking positions engaging the ground while the axes of the leg members at each end of the vehicle are inclined toward the other end of the vehicle at an acute angle of 15.degree. or more relative to the vertical, thereby automatically enabling the so-inclined legs at the trailing end of a skidding vehicle to exert a greater frictional drag than the oppositely inclined legs at the leading end regardless of the vehicle's forwardly or rearwardly skidding orientation, and stopping it in a straight line. In one embodiment, the jacks swing the support members about pivots.

Abstract: An improved hydrostatically compressed elastomeric spring in which an inner metal core buried in the elastomer contained in a flattened and bent tube constitutes a heating resistor for the elastomer to control its expansion and the compression of the spring under the effects of a static load. The spring is useful in shock absorbing devices.

Abstract: A bicycle wheel rim brake having an actuating element which can be rotated against spring force is actuated via of a traction cable in such a way that a sliding member supporting a brake lining is displaced in a straight line at right angles to the rim. The axis of rotation of the actuating element coincides with the axis of displacement of the sliding member or lies parallel thereto. A control surface which is inclined relative to this axis of rotation is connected to the sliding member. The sliding member, the brake lining, and the actuating element are supported by a bearing housing which is retained by a bayonet catch in a recess in the wheel fork in such a way that the maintaining of the rim brake is extremely simple.

Abstract: A driven wheel hub suitable for industrial vehicles, agricultural machine civil engineering equipment and materials handling equipment is closed by a removable cover independent of a flange enabling a wheel to be attached to it. It comprises a hollow body within which is a gear assembly and at least one brake disk constrained to rotate with the wheel shaft, the clamping of which is controlled by a hydraulic control unit. The hydraulic control unit is entirely accommodated within a housing formed for this purpose within the corresponding stub axle, and this housing is open in the axial direction on the same side as the cover.

Abstract: A spring engaged and magnetically disengaged disc brake for engaging two opposing flat surfaces of a rotating disc such as to decelerate the rotating disc. The brake device includes a frame mounted in a fixed position relative to the rotating disc and a pair of identical brake subassemblies interposed portions of the frame and each of the opposing flat surfaces of the rotating disc. Each of the brake subassemblies includes an electromagnet fixedly interconnected with the frame, an armature interposed the electromagnet and one of the flat surfaces of the rotating disc, a spring interposed the frame and the armature to bias the armature towards the rotating disc when the electromagnet is de-energized, and a brake lining interposed the armature and the rotating disc. The frame may be formed of two magnet bodies fixedly interconnected with each other or of a single U-shaped stamping.

Abstract: In a double-tube vibration damper the cylinder engages by a terminal edge thereof an engagement face of a piston rod guiding and sealing unit. When the piston rod moves in the outward direction with respect to the cylinder, a high pressure occurs in the working chamber adjacent the piston rod guiding and sealing unit. Due to this high pressure damping liquid jets may escape between the terminal edge of the cylinder and the engagement face of the piston rod guiding and sealing unit. These liquid jets may cause foaming within the annular space defined between the cylinder and a container surrounding the cylinder. In view of avoiding such foaming, an annular cover member is provided between the cylinder and the container, which annular cover member prevents the direct entrance of liquid jets into the annular space between the cylinder and the container.

Abstract: A disc brake unit comprises a disc assembly of interleaved rotor discs and stator discs that are normally spring in one direction biased to a brake engaged condition. A hydraulically operated first piston engages a stator disc at one end of the unit to move it axially in opposition to the spring bias to release the pressure between the discs and thus release the brake. A non-rotatable stop adapted to contact only one intermediate stator disc is provided to prevent movement of the intermediate disc in a direction opposite to the one direction. A second piston engages a stator disc at the opposite end of the unit for moving the rotor and stator discs on one side of a stop into engagement with each other and applies a modulated force to said rotor and stator discs while the first power piston is in position to oppose the spring bias, to thereby apply slip braking torque to the output shaft.

Abstract: A pad spring for use in a disc brake including a stationary member adapted to be secured to a non-rotatable part of a vehicle at one side of a rotatable disc and having two circumferentially spaced leg portions which straddle the outer circumference of the disc and mount slidably thereon a pair of friction pads, and a caliper slidably mounted on the stationary member. The pad spring has a base portion contacting with and extending along a side surface of the leg portion of the stationary member, a retaining portion extending from the base portion and retainingly engaging with the leg portion, a pressing portion extending from the base portion and resiliently engaging the radially outer surface of the friction pads, and a restricting portion extending from the base portion and to a position radially outwards of the pressing portion and being normally spaced therefrom by a predetermined distance.

Abstract: The invention relates to a multi-disc brake comprising a stationary rotary disc (1) and a moveable rotary disc (2) which is mounted on a splined sleeve (5) sliding on a splined part (3a) of a hub (3) of axis (4) and with which the disc (1) is solid. An assembly of friction pads (6 to 9) can interact with the discs (1,2) under the action of a hydraulic jack (13). The splines (23,25) of the hub and of the sleeve are protected from dirt by deformable diaphragms (20,26) which are turned in on themselves and which are arranged so as to be shielded from the thermal radiation emitted by the braking members (1,2,6 to 9).

Abstract: This invention relates to a drum brake with two internal expanding brake shoes pivoted at substantially diametrically opposite axes. It incorporates the negative feedback of the brake shoe sliding friction forces to oppose the applied hydraulic brake actuating forces for the purpose of reducing variation in brake torque due to random or uncontrolled variations in the coefficient of friction between brake shoes and brake drum. The required brake shoe friction force feedback is accomplished by eliminating the normally leading brake shoe with its undesirable lock-up prone positive feedback and replacing it with a brake shoe pivoted about an axis diametrically opposite the pivot axis of the normally trailing brake shoe. The location of the shoe pivots is chosen to establish the required feedback magnitude by use of lever ratios whose adequacy is verified by the force equilibrium equations of the brake system.

Abstract: A cushion isolator comprising a base body, a drum vertically disposed on the base body, a supporting plate disposed on the upper flange of the drum, a valve disposed in the inlet of the passage, a first fixing plate securing the drum on the base body and a second fixing plate securing the drum on the base body, whereby the cushion isolator can absorb the shock of a running machine.

Abstract: A descender for use when sliding down a rope during an abseil, the descender including a self acting brake mechanism, which will slow the rate of decent unless the brake is held in the release position. The descender has a fixed braking surface and a pair of sheaves mounted on a support member which is pivotable about an axis passing through a lower one of the sheaves such that a rope passing around the lower sheave, between the two sheaves, around the upper sheave and finally between the upper sheave and the braking surface, will cause the pivotable member to be pivoted to press the rope between the upper sheave and the braking surface when a tension is applied to the upper end of the rope. The descender is also provided with a handle to reduce the braking force by pivoting the upper sheave away from the braking surface and a retaining plate pivotable between a position in which a rope is retained in the descender and a position in which the rope is able to be inserted into and removed from the descender.

Abstract: A hydraulic damper includes a cylinder containing hydraulic fluid therein, a piston working in the cylinder and partitioning the interior thereof into two liquid chambers, a piston rod connected to the piston and extending through one of the liquid chambers to project to the outside of the cylinder, and disc valves provided on opposite sides of the piston for generating damping force both in the extension and contraction strokes of the damper. A liquid passage is formed in the piston rod to communicate the two liquid chambers separately from the disc valves. An adjusting member is provided in the liquid passage and is displaceable between three or more adjusting positions for changing the effective area thereof. A digital encoder connected to the adjusting member for detecting the adjusting positions. The digital encoder includes a common electric line which ON-OFF controls at least two other electric lines when the other two lines generate the same digital signals.

Abstract: The device incorporates a tubular bearing component (20) having an end portion inserted into the bottom (11) of the piston (1) and a portion projecting into the cavity (9) of the piston, the uni-directional clutch-spring (14) for the tapped sleeve (12) engaged on the threaded rod (8) for the handbrake being mounted on this projecting portion of the bearing component and incorporating an end arm (15) joined to the sleeve (12).

Abstract: The invention is directed to a braking arrangement for a chain saw having a housing and a guide bar mounted on the housing for accommodating a saw chain thereon. The brake arrangement includes a brake drum operatively connected to the saw chain with a brake band disposed in surrounding relationship thereto. A brake member is connected to the brake band and moves between a ready position whereat the brake band is disposed in spaced relationship to the brake drum and a released position whereat the brake band is drawn tightly around the brake drum. A brake spring resiliently biases the brake member to cause the brake member to pull the brake band tightly about the brake drum when in the released position. A latch arrangement holds the brake member in the ready position against the force of the brake spring. A cam connected to the drive motor rotates through a predetermined path.

Abstract: A structural element which is particularly suited for use in accommodating torsional displacement while carrying various axial, transverse, and flexural loads. The structural element is of a multi-component construction which includes at least one elongated tube-like thin wall member having a pair of longitudinally-extending edges. The wall member is laterally engaged and constrained by one or more stabilizers which permit yielding relative motion between the edges when torque is applied.

Abstract: A shock absorber comprising an elongated tubular element, closed at one end, into which element at the other end a piston can move as counter element, is disclosed. The space delimited by the counter element inside the tubular element is divided intoa high pressure chamber closed at one end closed by a first movable separating element which can come to rest against a stop element,a fluid chamber divided into at least two sections at the other end, which sections are separated from each other by a restricting element, which fluid chamber is closed by a second movable separating element embodied as a piston, anda low pressure gas chamber positioned between the first and second movable separating elements.