Patent application number | Description | Published |
20100032258 | Decoupler Assembly - A decoupler assembly that includes a hub, a drive member disposed about the hub, and a clutch coupling the hub and the drive member. The drive member is disposed about the hub for rotation about a rotational axis and includes an inner clutch surface. The clutch includes a carrier, a plurality of arcuate springs, and a wrap spring. The carrier is received between the hub and the drive member. The arcuate springs are mounted to the carrier and are configured to transmit rotary power between the carrier and the hub. The wrap spring includes a proximal end, which is drivingly coupled to the carrier, and a plurality of helical coils that are engaged to the inner clutch surface of the drive member. | 02-11-2010 |
20100140044 | Crankshaft Torque Modulator - A decoupler with driven and driving members, a clutch, a torsional vibration damper and a lubricant. The clutch is received in a bore in the driven member and includes a carrier, a wrap spring and at least one spring. The wrap spring is formed of spring wire and has a plurality of coils disposed between a first end, which is received in a groove in the carrier, and a second end. The portion of the wrap spring outside the carrier has an outer circumferential spring surface that is abutted against the inner circumferential surface of the bore. The at least one spring is disposed between the carrier and the driving member to transmit rotary power from the driving member to the carrier. The torsional vibration damper is coupled to the driving member for rotation therewith. The lubricant is disposed on the remaining portion of the wrap spring. | 06-10-2010 |
20130056328 | CRANKSHAFT TORQUE MODULATOR - A decoupler with driven and driving members, a clutch, a torsional vibration damper and a lubricant. The clutch is received in a bore in the driven member and includes a carrier, a wrap spring and at least one spring. The wrap spring is formed of spring wire and has a plurality of coils disposed between a first end, which is received in a groove in the carrier, and a second end. The portion of the wrap spring outside the carrier has an outer circumferential spring surface that is abutted against the inner circumferential surface of the bore. The at least one spring is disposed between the carrier and the driving member to transmit rotary power from the driving member to the carrier. The torsional vibration damper is coupled to the driving member for rotation therewith. The lubricant is disposed on the remaining portion of the wrap spring. | 03-07-2013 |
Patent application number | Description | Published |
20080220919 | Low Profile Tensioner with Arcuate Spring - A tensioner operable to substantially maintain a specified tension in a flexible drive, such as a belt or chain, includes a spring, mounted laterally to the pivot shaft of the tensioner, which biases the tensioner arm towards the flexible drive. The spring is arcuate in shape and is maintained in a correspondingly arc-shaped spring retainer on a mounting plate of the tensioner. The arcuate shape of the spring and spring guide on the tensioner arm follows as the tensioner arm pivots towards and away from the flexible drive. The tensioner also has a wear take up mechanism to maintain the friction bushing in continuous engagement with the tensioner arm. | 09-11-2008 |
20100101909 | Overrunning Decoupler With Locking Mechanism - An overrunning accessory decoupler with a locking mechanism provides the desired overrunning accessory decoupler functionality and also permits torque to be transferred from the accessory to which the decoupler is installed to the drive of the engine when desired. In one embodiment, the decoupler includes a locking mechanism that is controlled by centrifugal forces developed in the decoupler to lock the decoupler to permit the accessory to transfer torque to the drive to start or boost the engine. In another embodiment, the decoupler locking mechanism includes an electromagnet that can be energized to lock and/or unlock the decoupler. | 04-29-2010 |
20100137084 | Wear Compensated Tensioner - A tensioner for tensioning flexible drives employs an extruded shaft which can provide a relatively complex cross sectional shape to provide anti-rotation features to inhibit rotation of a pivot bushing located on the shaft. The pivot bushing has a frustoconical outer shape, as does the pivot surface of the hub of the tensioner arm which pivots on the pivot bushing. A dampening spring urges the pivot bushing towards the tensioner arm's pivot surface, providing for wear compensation and for dampening. The degree of dampening which is generated between the pivot bushing and the tensioner hub can be selected in a variety of manners: by varying the spring force; by changing the effective contact surface area between the pivot bushing and pivot surface; and/or by changing the coefficient of friction between the pivot bushing and the pivot surface. | 06-03-2010 |
Patent application number | Description | Published |
20080301660 | Maintaining Multiple Versions of a Software Application on a Device - Described are systems and methods for maintaining software applications on a computer. Multiple profiles having distinct attributes are defined on the computer. Separate updates for software applications are defined for individual profiles. A service module installed on the computer automatically selects appropriate updates for software applications for installation according to the individual profiles. | 12-04-2008 |
20080301667 | Dynamically Updating Software Applications on a Device - Described are systems and methods for updating software applications on a computer. Parameters associated with installed software applications are collected and transmitted to a server and installation instructions are determined based on the parameters. Installation instructions are then received from the server and appropriate updates are automatically installed according to the received instructions. | 12-04-2008 |
20080301669 | Dynamically Self-Updating by a Software Application on a Device - Described are systems and methods for self-updating software applications on a computer system. Installed software applications register with a service module installed on the computer. The service module requests updates for the installed software applications, including itself, and receives identification of available updates, including an update for itself. After receiving the identification, the service module automatically installs the identified updates, including updating itself. | 12-04-2008 |
20080301672 | Installation of a Software Product on a Device with Minimal User Interaction - Described are systems and methods for installing software products on a computer. A software product is identified and authorized for installation on a computer. Parameters useful for installing the software product are identified and transmitted to a server. Installations instructions are received from the server, and the identified software product is automatically installed according to the received instructions. | 12-04-2008 |
Patent application number | Description | Published |
20100122882 | DRIVEN ACCESSORY WITH LOW-POWER CLUTCH FOR ACTIVATING OR DE-ACTIVATING SAME - A driven accessory having a clutch that permits selective operation of an accessory portion. The clutch employs rotational inertia to control driving engagement of a wrap spring to an interior clutch surface on a drive member and/or driving disengagement of the wrap spring from the interior clutch surface. | 05-20-2010 |
20130008758 | DRIVEN ACCESSORY WITH LOW-POWER CLUTCH FOR ACTIVATING OR DE-ACTIVATING SAME - A driven accessory having a clutch that permits selective operation of an accessory portion. The clutch employs rotational inertia to control driving engagement of a wrap spring to an interior clutch surface on a drive member and/or driving disengagement of the wrap spring from the interior clutch surface. | 01-10-2013 |
20130313068 | DRIVEN COMPONENT WITH CLUTCH FOR SELECTIVE OPERATION OF COMPONENT - A component, such as an engine accessory for an automotive engine, that has clutch with a helical clutch coil and an axially movable armature. The helical clutch coil is normally engaged so as to transmit rotary power between a driving member and a driven member. The armature can be moved to apply a force to a tang of the helical clutch coil that causes the helical clutch coil to disengage to an extent where full rotary power is not passed through the clutch to drive the component. | 11-28-2013 |
20140329631 | DECOUPLER ASSEMBLY - A decoupler assembly that includes a hub, a pulley and a mechanism for transmitting rotary power between the hub and the pulley. The mechanism includes a torsion spring and a one-way clutch. The torsion spring is configured to dampen vibration in the rotary power that is transmitted from the pulley to the hub. The one-way clutch has a wrap spring that is smaller in diameter than the torsion spring. | 11-06-2014 |
20150060232 | ISOLATOR FOR ENGINE WITH PROGRESSIVE LOCK-UP FOR ISOLATION SPRING - In an aspect, an isolator is provided for isolating a device driven by an engine via an endless drive member. The isolator includes a shaft adapter that is connectable with a shaft of the device, a rotary drive member that is engageable with the endless drive member, a torsion spring that is positioned to transfer torque between the shaft adapter and the rotary drive member, and a torque limiting surface. The torsion spring has a first helical end, a second helical end and a plurality of coils between the first and second helical ends. The torque limiting surface has a selected non-zero spacing from the coils. The spacing between the torque limiting surface and each coil is selected such that, during operation, the torsion spring has a spring rate that is below a first spring rate during relative movement between the shaft adapter and the rotary drive member within a selected angular range from a neutral position, and has a spring rate that increases progressively above the first spring rate during relative movement between the shaft adapter and the rotary drive member beyond the selected angular range from the neutral position. | 03-05-2015 |