摘要:
A pedal assembly (20) that provides a hysteresis in pedal force-response upon actuation is provided. The pedal assembly includes a housing (32) and a pedal arm (22) that has a first end (22B) and a second end (22A). The first end has a rotatable drum (29) that defines a braking surface (42). The pedal arm (22) is rotatably mounted to the housing (32). A first lever (21B) extends from the first end (22B). A brake pad (44) is retained by the housing (32) and has a contact surface (70) that is substantially complementary to the braking surface (42). The brake pad (44) is adapted to be engaged with the braking surface. A bias spring device (46) is situated between the first lever and the brake pad for urging the contact surface of the brake pad into frictional engagement with the braking surface of the drum. The housing comprises a kickdown device (400). A second lever (420) extends from the first end (22B) and is adapted to engage against the kickdown device (400).
摘要:
A system and method for removing retentate from filters is disclosed, which utilizes pressurized and/or vacuum fluid through localized application. The disclosure describes a cleaning system and sequence of steps for carrying out the cleaning process, whereby, a fluid is directed to flow through a localized region of the filter media, thereby dislodging and removing accumulated retentate from the filter. In addition, the localized applications of fluid flow allows for localized monitoring of the cleanliness of the filter with a high degree of spatial resolution. This filter retentate removal system and method is broadly applicable to a wide range of systems and processes ranging to engines and exhaust systems to production plants and equipment.
摘要:
A pedal assembly for a vehicle including a pedal housing and a pedal arm coupled to the housing. A friction generating assembly associated with the housing includes at least an actuator which is engaged by the pedal arm, a brake pad engaged by the actuator, and springs which engage against the brake pad. Arms on the brake pad are adapted to engage with either an interior central wall or interior peripheral wall of the friction generating assembly. In one embodiment, the friction generating assembly defines a separate module which is snap fitted into a cavity defined in the pedal housing. A magnet is coupled to the pedal arm. A sensor is coupled to the pedal housing and positioned in proximity to the magnet. The sensor is responsive to movement of the magnet to generate an electrical signal that is representative of the position of the pedal arm.
摘要:
An oscillator having improved frequency stability which includes an oscillator circuit and an SC-cut resonator connected with the oscillator circuit. The SC-cut resonator has a first turning point. A temperature compensation circuit is connected with the oscillator circuit. The temperature compensation circuit is adapted to adjust a reference frequency generated by the oscillator circuit according to a frequency response associated with a second turning point of an AT-cut resonator.
摘要:
A ball grid array ceramic filter including a substrate having a ground layer of conductive material disposed over one of the surfaces thereof and a plurality of strips of conductive material on the other of the substrate surfaces defining resonators adapted to receive and pass RF signals. A plurality of vias extend through the substrate and define opposed ends terminating in the respective substrate surfaces. In one embodiment, a plurality of conductive spheres defining respective ground and RF signal input/output pads are disposed on the substrate surface with the ground layer thereon. Certain of the vias couple the resonators to the ground layer while others of the vias couple the resonators to respective spheres adapted for coupling to the respective RF signal input/output contacts on the top surface of a printed circuit board to which the filter is adapted to be direct surface mounted.
摘要:
An accelerator pedal assembly that provides a hysteresis in pedal force-response upon actuation is provided. The accelerator pedal assembly includes a housing (32), an elongated pedal arm (22) terminating at one end in a rotatable drum (29) defining a curved braking surface (42), a brake pad (44) having a curved contact surface (70) substantially complementary to the braking surface (42) and a bias spring device (46) operably situated between the pedal arm (22) and the brake pad (44). The pedal arm (22) is rotatably mounted to the housing (32) such that the curved braking surface (42) rotates as the pedal moves. The brake pad (44) defines a primary pivot axis and is pivotably mounted for frictional engagement with the braking surface (42). The bias spring (46) serves to urge the contact surface (70) of the brake pad (44) into frictional engagement with the braking surface (42) of the drum (29).