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| Number | Title | Issue Date |
| 8100047 | Slip seal diaphragm for spring brake actuator A brake actuator system of a vehicle comprising a diaphragm design with a hole and sealing element in the center. The design allows for the sealing element to seal and slide on the outer diameter of the center pushrod for the exposed length. This eliminates the need... | 01/24/2012 |
| 7963210 | Spring-loaded brake cylinder having locked stop body A spring-loaded brake cylinder for commercial vehicles includes at least one spring-loaded brake piston that can be actuated by a pre-loaded spring and is supported in a housing. A mechanical emergency release device is provided for the emergency release of the spri... | 06/21/2011 |
| 7506573 | Mid-power spring brake actuator having fuse-collar design for safety A mid-power spring brake actuator includes first, second, and third actuator housing portions, with the first actuator housing portion interposed between the second and third housing portions. A parking brake release actuator is received within the third housing por... | 03/24/2009 |
| 7451690 | Spring-actuated air-brake cylinder for vehicle brake systems A spring-actuated air-brake cylinder as the diaphragm cylinder for vehicle brake systems includes a diaphragm, an actuator-spring chamber in which there is received a spring-actuated piston, which is acted on by a compression spring as the actuator spring and is act... | 11/18/2008 |
| 7343847 | Actuator for a brake system and method of making a brake actuator In an actuator for a brake system or a method for making a brake actuator, an attachment mechanism for attaching a diaphragm to a piston includes a plurality of protrusions on one of the piston and diaphragm and a plurality of cavities on the other of the piston and... | 03/18/2008 |
| 7303053 | Non-pressure head with integrated piston stop and vent/drain A non-pressure head for a fluid cylinder, which includes a drain channel formed in the flange by a raised portion of the flange extending from a plane of the flange in the same direction as the head portion. The channel is cold formed in the flange. For the piston s... | 12/04/2007 |
| 7267206 | Device for the hydraulic actuation of a parking brake and method for operating such a device A parking and emergency brake device having an actuating device (10) that is supplied with pressurized fluid wherein a piston (14) slides in a cylinder (12, 22) to axially delimits a front hydraulic pressure chamber (16) and exert a deter... | 09/11/2007 |
| 7150344 | Actuator and slack adjuster A fluid operated brake actuator is provided composed of a common housing, a shaft rotatable within the housing, the shaft being rotatable to engage and disengage a brake, a vane connected to the shaft, the vane being responsive to fluid pressure to rotate the shaft,... | 12/19/2006 |
| 7121191 | Air-operated brake actuator with control valve An air-operated brake actuator system of a vehicle comprises a spring brake actuator and a service brake actuator, the spring brake actuator including a sealed housing with a spring chamber and a pressure chamber, and a hollow actuator rod disposed in the spring bra... | 10/17/2006 |
| 7114597 | Spring loaded cylinder A spring storage cylinder, for the generation of braking forces for the auxiliary and parking brake effect, comprises a piston, arranged in a housing, which may be displaced for the operation of a brake lever. The piston is pretensioned against the brake lever by a ... | 10/03/2006 |
| 7028814 | Method and apparatus for positioning an end of a push rod of a brake actuator The invention relates to a method and apparatus for positioning components of a brake system, which includes a push rod, a ball end coupled to the push rod, and a force transfer member placed between the push rod and the ball end. The force transfer member has both ... | 04/18/2006 |
| 6935219 | Accumulation conveyor There is provided an apparatus that is composed of a first plurality of zones. The zones are capable of being separately driven in order to accumulate or transport cartons. A sensor is disposed within each zone for sensing the presence of a carton within the zone, a... | 08/30/2005 |
| 6932356 | Protective covers A protective cover which is generally in the form of a flexible bellows construction secured at each end by collars in order to define an interior space includes vent means. Thus, when the cover is deformed, the volume within the interior is altered by aspiration or... | 08/23/2005 |
| 6907818 | System and method for providing dry filtered air to a brake actuator A spring brake actuator that utilizes a valve for providing compressed air to a spring cavity, the air having previously been dried and filtered so as to prevent contaminates and moisture from corroding and/or damaging the spring in the spring cavity, the valve bein... | 06/21/2005 |
| 6902043 | Driveline vehicle parking brake actuator A driveline vehicle parking brake actuator including a reciprocable piston, a spring guide having a tubular distal portion telescopically received on the piston and a radial proximal portion which is telescopically supported within the housing by an annular wear gui... | 06/07/2005 |
| 6799502 | Spring brake cylinder with an emergency release device The invention relates to a spring brake cylinder with an emergency release device, comprising the following: a housing in which a spring-loaded piston can be moved axially with a piston rod, at least one spring-loaded spring, wherein the emergency release device com... | 10/05/2004 |
| 6729224 | Service brake actuator having a unitary pushrod assembly with a bushing therefor A service brake actuator (10) having a unitary pushrod assembly (42) in combination with a bushing (62) having a separable portion that permits the assembly of the service brake actuator without the need for the clevis (48) to be removabl... | 05/04/2004 |
| 6694866 | High output spring brake actuator Disclosed is a diaphragm-based spring brake actuator assembly which allows for the delivery of more force to the push rod without increasing the size of the actuator unit. The invention allows for the use of a stronger heavy main compression spring in the... | 02/24/2004 |
| 6626083 | Spring brake actuator with hot set spring A spring brake actuator has a sealed spring chamber with a hot set large force compression spring. An alternative embodiment has the hot set spring guided by the actuator rod.... | 09/30/2003 |
| 6588314 | Sealed brake actuator A sealed air-operated brake actuator comprising a brake actuator divided into a spring chamber and a pressure chamber. An extra-large force compression spring is contained in the spring chamber. The spring chamber is fluidly exhausted through a one-way va... | 07/08/2003 |
| 6536329 | Brake actuator having tamper resistant riveted spring chamber A spring brake actuator having a flange case and a head is provided. The flange case and the head each have a radially outwardly extending annular flange having a plurality of radially spaced apart axial holes passing therethrough which correspond to and ... | 03/25/2003 |
| 6378414 | Removable filter cap for spring brake actuator Disclosed is an easily removable and replaceable filter cap for attachment the caging tool opening in the top of the upper housing of an emergency brake actuator. The cap includes a plurality of ventilation holes and a membrane preferably made of oilophob... | 04/30/2002 |
| 6267043 | Brake actuator assembly The brake actuator assembly of this invention significantly reduces accumulation of road debris, reduces the weight of the push rod and yoke assembly and friction between the mating parts. The brake actuator includes a housing defining a chamber having an... | 07/31/2001 |
| 6223647 | Brake actuator and method of forming same An improved brake actuator and method of assembling a cup-shaped housing on a housing member of a brake actuator, wherein the housing member has an open end, an annular radially projecting rib adjacent to and surrounding the open end and a plurality of sp... | 05/01/2001 |
| 6164187 | Diaphragm retainer for spring brake actuator A spring brake actuator (10), with a first spring brake chamber (76) filled with compressed air and a second spring brake chamber (78) housing a large-force compression spring (82), includes an elastomeric diaphragm (74) having a centrally-disposed apertu... | 12/26/2000 |
| 6148711 | Normally-closed diaphragm check valve A spring brake actuator being divided into a first spring brake chamber and a second spring brake chamber by a diaphragm extending across the actuator. A pressure plate is provided in the first spring brake chamber and rests on the diaphragm. A power spri... | 11/21/2000 |
| 6085501 | Automatic adjusting for lightening a machine working unit: method, device and machine A method and device for automatically adjusting the lightening of a working unit (U) of a machine by use of a hydraulic ram (57) associated with a hydropneumatic accumulator (67). Use is made of a second hydraulic ram (58) of which the piston (53), which ... | 07/11/2000 |
| 6079312 | Combined valving system for spring brake actuator An improved spring brake actuator includes an improved valve housing which incorporates pressure test points into the air supply, and further incorporates an anti-compounding valve. By incorporating the anti-compounding valve and test points directly into... | 06/27/2000 |
| 6062124 | Brake booster A pneumatic booster for use in association with heavy duty truck brakes including an emergency mechanism whereby the brakes are automatically applied in the event of a pneumatic system failure. An intermediate housing portion of the booster, typically pro... | 05/16/2000 |
| 6041690 | Pneumatic control unit for at least partial opening of a movable body part of a motor vehicle A pneumatic drive unit is provided for partially opening a vehicle body part such as a trunk lid. The pneumatic drive unit includes a working chamber which in use applies pressure to move a control member which engages a contact surface of the vehicle bod... | 03/28/2000 |
| 6029447 | Spring brake actuator with filtered vent openings A spring brake actuator (10), with a large-force compression spring (72) in a spring chamber (101) of the housing, has vent openings (102) in the housing communicating with the spring chamber (101). A gas permeable filter element (104) covers the vent ope... | 02/29/2000 |
| 6012378 | Air brake actuator having increased output A spring brake actuator (14) includes a housing having first (51) and second (52) housing sections defining a housing interior (53). A support plate (70) is movable between retracted and extended positions relative to the housing and a spring (72) is disp... | 01/11/2000 |
| 6006651 | Spring brake actuator with filtered service vent opening A fluid-operated brake actuator having a housing with one or more vent openings in communication with an interior chamber is provided with a filter assembly mounted to the housing over the vent openings. The filter assembly includes a gas permeable filter... | 12/28/1999 |
| 5957032 | Air-operated brake actuator mounting Brake actuator housings (120) are provided with mounting studs (105, 125) which are spaced from each other a standard predetermined distance so that smaller brake actuators can be mounted to a bracket (5) on a vehicle by way of the same apertures (108) as... | 09/28/1999 |
| 5937733 | Spring brake actuator with internal breathing conduit A spring brake actuator (10), with a large-force compression spring (82) in a second spring chamber (78) of the housing, has vent openings (100) in the housing communicating with the second spring chamber (78). A filter assembly (134) covers the vent open... | 08/17/1999 |
| 5916347 | Hydraulic servo device for automatic transmissions A hydraulic servo device for an automatic transmission is presented with a reduced axial length as a result of the manner in which oil pressure is fed into the cylinder. The hydraulic servo device includes a cylinder, a piston position to slide within the... | 06/29/1999 |
| 5881858 | Hydraulic servo-mechanism for an automatic transmission A hydraulic servo-mechanism for an automatic transmission, including a hydraulic servo for applying a band brake to engage a band to a drum. The hydraulic servo includes a rod which is selectively positionable to an apply position for applying the band br... | 03/16/1999 |
| 5873297 | Fluid-operated brake actuator with check valve A fluid-operated brake actuator having a check valve in the spring chamber to equalize the pressure on opposite sides of an operating movable diaphragm. The check valve being double redundant and tamper resistant and comprising a tubular body having a fir... | 02/23/1999 |
| 5836233 | Spring brake with sealable breather holes A pneumatic spring brake for an automotive vehicle has a housing formed of a spring chamber head and an adapter head, and has a spring brake diaphragm, a power spring, and a spring plate. The spring chamber head is a generally bowl-shaped structure having... | 11/17/1998 |
| 5829339 | Crimped sealed adapter bushing assembly for a double diaphragm spring brake actuator A sealed bushing assembly adapted to permit a push rod to pass through an adapter isolating a pressurized chamber, formed by attaching a sleeve to said adapter, inserting a bushing, and crimping the end of said sleeve opposite said adapter to restrain sai... | 11/03/1998 |
