Abstract:
An absolute position magnetic encoder includes a first magnetic track configured for a binary output, a second magnetic track configured for a decimal output, a first magnetic sensor positioned proximate the first magnetic track to detect the magnetic field of the first magnetic track, and a second magnetic sensor positioned proximate the second magnetic track to detect the magnetic field of the second magnetic track. The encoder is selectively operable to provide one of the binary output and the decimal output.
Abstract:
An improved linkage (10) such as for use in an implement attachment assembly of a utility vehicle, wherein forces are transmitted between two or more couplings (11, 13). The improved linkage assembly (10) is configured to have compliance along a selected X-axis, and to incorporate at least one displacement sensor (100) for measuring the effect of forces in the improved linkage (10) along the selected X-axis. Placement of the displacement sensor (100), and the configuration of the improved linkage body (10A), including the inclusion of a plurality of side and central openings (12, 14) are selected to decouple the displacement sensor (100) from the effects of forces which are exerted perpendicular to the selected X-axis. An optional protective cover (16) may be provided to enclose the displacement sensor (100) and improved linkage body (10A).
Abstract:
A load sensor device (52) for measuring wheel contact loads applied to a suspension system (10) of the vehicle. The load sensor (52) comprises a resilient member (74) operatively connected to the suspension system (10) and to a housing (72). A circuit board (78) attaches to the suspension system (10) and the housing (72), wherein the circuit board (78) has sensors (92) attached thereon. The sensors (92) measure movements of the circuit board (78) that are created in response to the wheel loads applied through the resilient member (74).
Abstract:
A method and apparatus for testing, evaluating, and/or calibrating strain sensors. A test beam (12) having a uniform shear-strain region is secured at opposite ends of a longitudinal axis by uniform force clamp assemblies (14) and (16). A first clamp assembly (14) at one end of the rectilinear test beam is configured to hold the rectilinear test beam (12) in a fixed position, while the second clamp assembly (16) at the opposite end is configured to enable application of torque to the test beam (12) about the longitudinal axis. Displacement sensors (60) in operative proximity to the second clamp assembly (16) provide data which is representative of the deflection of the test beam (12) about the longitudinal axis in response to the applied torque, while a torque sensor (62) provides data which is representative of the actual applied torque. Output signals from one or more strain sensors (64) disposed on the surface of the rectilinear test beam (12), within the region of substantially uniform shear-strain, may be tested and/or calibrated in relation to the deflection of the rectilinear test beam (12), the applied torque, and optionally to an environmental condition such as temperature.
Abstract:
A packaged bearing assembly (4) for a full floating axle (a) fits on the end of an axle tube (2) where it serves to couple a road wheel (B) to the axle (A). The bearing assembly (4) includes a housing (12) having external formations (28, 30) for mounting brake components. It also has a hub (14) provided with a drive flange (36) located beyond the outboard end of the housing (12) and a spindle (38) that projects into the housing (12). Finally, the bearing assembly (4) also has an antifriction bearing (16) located within the housing (12) and around the spindle (38) of the hub (14) to enable the hub to rotate relative to the housing and axle tube. The drive flange (38) of the hub (14) provides a mounting for a road wheel (B). An axle shaft (8) extends through the axle tube (2) and through the hub (14) and is removably connected to the hub (14), so that it can be withdrawn without elevating the road wheel (B) off of its supporting surface.
Abstract:
A low frequency heating device (10) for heating a machine component (34) comprises a low frequency power supply (12) connected to a coil (18), a housing (20) having an interior (22) for placement of a machine component (37), the coil being wound around the housing. A machine component (34) is formed by heating with a low frequency heating device with the device comprising a low frequency power supply connected to a coil, a housing having an interior for placement of the machine component therein, and the coil being wound around the housing.
Abstract:
A wheel end (A, B, C) for coupling a road wheel (R) to a suspension system component (S) of an automotive vehicle includes a member (4) to which the road wheel is secured and another member (2, 102) having a pair of ears (12, 106) along which that member and the wheel end itself are attached to the suspension system component. In addition, the wheel end includes an antifriction bearing (6) located between the two members. It has rolling elements (62) organized in two rows to transfer radially loads as well as axial loads in both axial directions between the two members. The ears are spaced apart 180° and are oriented vertically, and studs (70, 120) may be interposed between them and the suspension system component. The studs carry strain sensors (94, 140) that produce signals that reflect forces and moments exerted on the wheel end, and from those signals one can ascertain vehicle driving and road surface conditions.
Abstract:
A damping sleeve and method for damping vibrations applied to a bearing. In a suspension system 10 having a housing A and a bearing assembly 14 located in the housing A for supporting a shaft 16, the sleeve 52 dampens vibration effects that are generated by the rotating shaft 16. The bearing assembly 14 comprises a bearing 18 located in at least one bearing seat 12 and located around the shaft 16. The bearing 18 also includes an inner race 22 having an inner raceway 28, an outer race 24 having an outer raceway 30, and rolling elements 26 located between and contacting the inner race 22 and the outer race 24. The sleeve 52 fits to at least one of the inner race 22 and the outer race 24. The sleeve 52 comprises a formable, composite material 56, the formable, composite material 56 having opposing layers of metal 58 and a viscoelastic material 60 interposed between the opposing layers of metal 58 wherein the viscoelastic material 60 dampens vibrations caused by the shaft 16 and transmitted to at least one of the inner race 22 and the outer race 24.
Abstract:
A wheel end (A) has a housing (2, 70, 80, 90) and a hub (4) provided with a spindle (32) that projects into the housing, and the hub rotates relative to the housing on an antifriction bearing (6) located between the housing and hub spindle. The housing has a tubular core (12, 72, 82, 92) that encloses the bearing and ring mounts (14, 74, 84, 94) spaced outwardly from the core and also webs (16,76,86,96) that connect the ring mounts to the core. A road wheel (B) is attached to the hub and rotates with the hub relative to the housing. The housing is secured to a suspension upright (C) at its ring mounts. The core deflects relative to the ring mounts, owning to forces and moments transferred through the bearing from the suspension upright to the road wheel and vice versa, and the magnitude of those forces and moments are reflected in signals derived from strain sensor modules (SM) attached to the webs of the housing.
Abstract:
A temperature sensing system (100) for use with a variable reluctance sensor such as found in vehicle wheel bearing applications, which utilizes existing sensors (12) such as the antilock braking system or traction control system sensors as a direct current resistive temperature gauge. The temperature sensing system (100) includes electrical components (R4, C1) configured to separate the DC voltage (VDC(t)) representative of sensor temperature from the original magnetically induced AC voltage output signal (VSN1(t)) representative of the rotation such as vehicle wheel speed, thereby permitting the temperature sensing system (100) to be retrofitted and installed in vehicles or other components without significant alteration to an existing wiring harness or electrical components.