Abstract: A screened enclosure such as that commonly used to cover lanais, swimming pools, outdoor dining areas and the like has supports for overhead screening. Typically the supports are a series of roof arches joined by cross beams, and fixed screening is secured to the upper surfaces of these supports. The enclosure includes removable screen sections which are removably secured to under surfaces of these supports or the under surfaces of specially provided screen support members. These under surfaces to which the removable screen sections are removably secured define several perimeter sections which are usually but not always rectangular, with a separate removable screen section for each of those perimeter sections. When a removable screen section is removed, partially or completely, it is removed from underneath the screened enclosure so that no one has to climb above the screened enclosure to reach and remove debris.

Abstract: A fluid flow sensitive valve mechanism is positioned in a valve chamber between first and second inlet-outlet ports and controls the opening and closing of a third inlet-outlet port in response to the flow of fluid to and from the valve chamber through two or more of the ports. The valve mechanism includes a valve member and a valve positioning device. The inpingement of fluid flow acts on various surfaces of the valve mechanism so that (1) when fluid flows from the first port into the valve chamber the valve mechanism is move to close the third port and to keep the third port closed so long as there is thereafter no fluid flowing from the second or third port into the valve chambr, and (2) when fluid flows through the first port from the valve chamber, whether from the second port or the third port or both, the valve mechanism is moved to open the third port.

Abstract: A master cylinder having pistons sliding through high pressure lip seals during operation. When the pistons are at rest during release, the seals are in an open position relative to the pistons sufficient to permit the passage of fluid therepast for compensation. The open positions are attained by providing piston portions of smaller diameter than the high pressure seals. These piston portions may be at least parts of piston beveled edge surfaces, or such edge surfaces in conjunction with notches or grooves which are of smaller diameter than the high pressure lip seals. The notches or grooves may extend circumferentially completely around the pistons, or may be arcuately extending circumferentially spaced notches or grooves.

Abstract: A coil spring has a series of short length plastic rollers received on the spring coils so that the rollers engage either a cylinder wall in which the spring works or a rod received through the spring, or both. The rollers act as roller bearings to prevent binding, wear and noise.

Abstract: A hydraulic booster in which the booster piston return spring is formed as a tubular conduit to conduct hydraulic supply pressure to a closed center valve. Upon actuation, the valve opens to permit supply pressure to flow into the power chamber and by valving action controls the exhaust of pressure from the power chamber so as to establish the desired actuating pressure therein. The tubular conduit forming the power piston return spring and transporting the supply pressure to the closed center valve permits a shorter overall axial length of the hydraulic booster by accommodating the movement of the supply pressure chamber at the closed center valve. It also permits less charged supply pressure leakage by accommodating a better pressure seal arrangement.

Abstract: A storage container such as a bin or tank is received on a pallet having a shock isolation arrangement which will reduce damage to the container and the goods contained therein. The pallet is formed with a hollow square frame having rolled or otherwise formed edges arranged to retain rubber-like hose sections which engage the container sides adjacent each container corner and absorb horizontal plane shock as well as some vertical plane shock. Once the rubber hose sections are inserted in the pallet frame while the container is in position thereon, the sections will hold the frame and the container together so that they may be transported as a unitary assembly. The rubber-like hoses will continue to isolate the container from impacts transmitted to the pallet in typical handling operations. The assembly may be readily moved by a forklift or other similar equipment.

Abstract: A drum brake assembly having a parking brake actuating lever is so arranged that the parking brake cable end may be assembled in a blind fashion to the end of the actuating lever. The cable is provided with a button. The lever has a return spring which has one end attached to the lever and the other spring secured to the backing plate about a parking brake cable opening through the backing plate. The spring end attached to the lever has a retaining ramp and a hook end, the retaining ramp being above an open channel formed on the lever end and the hook end being secured to the lever one end above the channel. The cable button is inserted axially through the backing plate opening provided for the cable and through the spring, being guided by that spring, to a point above the channel open receiving end.

Abstract: A drum brake assembly having a parking brake actuating lever is provided so that the parking brake cable end may be assembled in a blind fashion to the actuating lever. The cable is provided with a button. A spring is attached to the lever and to the backing plate about a parking brake cable opening. The spring end attached to the lever has a ramp section and a hook end, the ramp section being in a tapered open channel formed on the lever end and the hook end being secured to the lever. The cable button is inserted axially through the backing plate opening through the spring, being guided by the spring, into the channel. Further insertive movement of the cable button causes the button to be deflected upwardly by the coil spring ramp portion and the channel sides, side loading the cable. When the button passes the end of the ramp portion and the channel smaller end, the stored force in the cable because of the side loading moves the cable and the button downwardly in the channel.

Abstract: A tandem diaphragm vacuum booster in which both diaphragm and the bead seals are made of a single rubber-like molding.

Abstract: A tandem diaphragm vacuum booster in which both diaphragm and the bead seals are made of a single rubber-like molding.

Abstract: A vehicle wheel brake system having a service braking section and a wheel lock control (ABS) section is provided. Under certain conditions the wheel lock control section may not be able to generate sufficient pressure to operate the vehicle wheel brakes when the master cylinder output pressure has been isolated from the wheel brakes. When such conditions occur, the displacement piston of the ABS control section moves to open a bypass valve which connects master cylinder output pressure to the vehicle wheel brake even though the ABS system has isolated it from that wheel brake. The bypass valve is a two-stage orifice valve arrangement which provides orifice control of master cylinder pressure during initial brake actuation and provides two stage valve opening action when the master cylinder output pressure is to be delivered to the wheel brake to actuate that brake irrespective of the attempted control of the wheel brake by the ABS section of the brake system.

Abstract: A valve assembly having normally opened and normally closed valves controlled by solenoids to provide various connected and disconnected arrangements in a fluid system. It is particularly useful in a wheel lock control or anti-skid brake system (ABS).

Abstract: A booster mounted on a supporting panel by a cam and lock arrangement has an inverse arc securing tab and arm mechanism which prevents further rotation in either direction from the installed position.

Abstract: A power brake booster has booster load carrying members which are separate from the booster housings walls so that they take the load reaction from the master cylinder outside of the booster housing. This separates the differential pressure chamber wall functions and the booster load carrying member function.

Abstract: Vapor guard systems which prevent vapors from reaching a servomotor from a power source for the servomotor. One embodiment uses a control valve which directs such vapors to a vapor trap filter under conditions where vapor flow may be toward the servomotor, and operates to permit purging of the vapor trap filter when there is flow only away from the servomotor. Another embodiment uses an in-line vapor trap filter and a vapor trap canister, normally used to trap fuel vapors from a vehicle fuel tank, to trap fuel vapors from the power source. Both the in-line vapor trap filter and the canister are purged of adsorber vapors where the power source is operating.

Abstract: A booster is mounted on a supporting panel by a cam and lock arrangement. The mount can be accomplished from one panel side, and the booster input push rod is readily connected to a pedal arm.

Abstract: A bayonet mounted brake booster assembly has a separate mounting arm which is snapped and retained in position shortly before installation of the booster assembly in the vehicle.

Abstract: A vehicle braking system having a wheel lock control arrangement with isolation valves for each wheel brake and either three or four solenoid and brake control valves for the system. In one arrangement, each wheel brake and isolation valve has its own solenoid and control valve. In other arrangements two front wheel brakes have separate solenoid controlled operating valves and the two rear wheel brakes have a single solenoid controlling operating valve controlling both isolation valves. Traction control is incorporated into the system so that a wheel brake required braking for traction control purposes may be applied by pump pressure without the vehicle brakes themselves having to be applied through service braking.

Abstract: Various embodiments of mechanism for attaching a high pressure tube to an opening in a housing using a tapered opening into which a high pressure tube end is inserted. A securing device is positioned about the tube end and the securing device is pressed fitted into place in the opening so that it is press fitted not only to the housing on an outer diameter portion but also inwardly against the tube end, sealing the opening And the tube so as to hold about 5,000 p.s.i. pressure and also securing the tube against forces tending to move the tube axially or rotationally so as to loosen the tube.

Abstract: Resilient side loading of vacuum brake booster check valves by an O-ring type resilient spring to inhibit valve pulsations and resulting valve noises generated by pulsations from the vacuum source.