13796 results about "Tread" patented technology

A tire or tire tread incorporating an elastomeric composition having improved vulcanization kinetics, based on at least a diene elastomer, a reinforcing inorganic filler and, as (inorganic filler/elastomer) coupling agent, a bis-alkoxysilane tetrasulfide of the formula:

in which:

• • the symbols R¹, which may be identical or different, each represent a monovalent hydrocarbon group selected from among the group consisting of alkyls, whether straight-chain or branched, having from 1 to 4 carbon atoms, and alkoxyalkyls, whether straight-chain or branched, having from 2 to 8 carbon atoms;
  • R² and R³, which may be identical or different, each represent a monovalent hydrocarbon group selected from among the group consisting of alkyls, whether straight-chain or branched, having from 1 to 6 carbon atoms, and the phenyl radical; and
  • x is between about 3 and about 5.

A structurally supported tire includes a ground contacting tread portion, a reinforced annular band disposed radially inward of the tread portion, and a plurality of web spokes extending transversely across and radially inward from the reinforced annular band and anchored in a wheel or hub. The reinforced annular band comprises an elastomeric shear layer, at least a first membrane adhered to the radially inward extent of the elastomeric shear layer and at least a second membrane adhered to the radially outward extent of the elastomeric shear layer. Each of the membranes has a longitudinal tensile modulus sufficiently greater than the shear modulus of the shear layer so that when under load the ground contacting portion of the tire deforms to a flat contact region through shear strain in the shear layer while maintaining constant the length of the membranes, the web spokes transmitting load forces between the annular band and the hub through tension in the web spokes not connected to the ground contacting portion of the tire.

A compliant wheel includes a compliant band and a plurality of web spokes extending transversely across and inward from the reinforced compliant band for attachment to a hub. The compliant band bends to comply with a contact surface and to envelope obstacles. The web spokes transmit load forces between the compliant band and the hub through tension in the web spokes not connected to the ground contacting portion of the wheel. The outer surface of the compliant band may be formed to include a tread, or a separate tread band may be attached.

An athletic shoe comprises an upper (3) for accommodating an instep of a foot, and outer sole (4) having a tread on bottom surface, and a midsole (1) interposed between the upper (3) and the outer sole (4). A shock absorbing groove (2) is formed in the midsole (1). The shock absorbing groove (2) is formed of a long transverse groove (20) and a short longitudinal groove (21) in a continuous manner. The transverse groove (20) is formed on the midsole (1) extending from a side face of a rear foot part (1B) of the midsole (1) on lateral side (10) of the foot to a back face of a heel part (1H) of the midsole (1) and has an end (22) on the heel part (1H). The longitudinal groove (21) is formed in such a manner as to cut out the heel part (1H) of the midsole (1) from a lower end face of the midsole (1) toward the end of the transverse groove (20).

A self-propelled battery-powered wheelchair replaces an ordinary wheelchair and provides improved access to homes. The wheelchair includes stair climbing, slope climbing, and reclining while requiring only minimal driver skill and strength. Operation on level ground is similar to the operation of a conventional wheelchair. Support for normal operation is provided by a rear caster and wheels on the front corners. Its compact width and length enable negotiating narrow doorways and turning in small spaces. To ensure stability on stairs, moveable skids are mounted to the four corners of the wheelchair. Parallelogram linkages move the front skids down and forward during climbing. Another parallelogram linkage moves the caster and rear skids up and at an angle during climbing. The wheelchair is steerable on stairs as needed to align with the stair path and accommodate slightly spiraling stairs. The wheelchair accommodates stair steps of different riser heights and tread lengths. A pair of spoked or spider wheels with small wheels at the ends of the spokes are rotably mounted to the sides of the wheelchair. The spider wheels engage the stairs to propel and stabilize the wheelchair during climbing of stairs. Methods are provided to monitor and control the pitch attitude of the wheelchair and nearness of wheelchair supporting components to the stairs. Motion and control are provided by electric motors, sensors, a computer, and driver inputs. Propulsion power for conventional level operation, slope climbing, and stair climbing operation is transmitted through the same motors and wheels.

A treadmill assembly comprising a substantially horizontal tread assembly including oppositely extending front and rear ends, a tread and a controller for controlling movement of the tread, a support structure extending proximate the rear end of the tread assembly to a distal top end substantially above the rear end of the tread assembly, a table top member mounted to the distal top end of the support structure, the top member including a substantially flat work surface and a front edge, the work surface having dimensions suitable to support a computer keyboard and a control assembly including at least one input button for providing command signals for controlling the controller, the control assembly supported by the table top member adjacent the front edge of the table top member.

A tread depth measurement system for measuring a depth of a tread provided to a tire on a vehicle. The system includes an energy source for emitting a wireless signal to be transmitted to the tire; a sensor for detecting a return wireless signal emitted from the tire to be transmitted in response to the wireless signal from the energy source; and a housing over which the tire is to roll while attached to the vehicle, said housing separating the sensor from the tire while the tread depth is being measured. A control unit is operatively coupled to the sensor for determining the depth of the tread as a function of at least the return wireless signal detected by the sensor.

The present invention relates to a method for on-line detecting railway car wheel set diameter and its detection equipment. It is characterized by that it utilizes the projection information of light source of structure light on the wheel set tread and base point information detected by displacement sensor to detect wheel average diameter parameter and left-right wheels wheel-diameter difference parameter. Said method includes the following steps: speed detection, starting light source, starting inside surface detection and image collection, image treatment, fitting rolling circle and diameter parameter calculation.

An improved treadmill control system which adjusts the speed of a moving tread belt to follow user motions. Equipment includes a tread base supporting a moving tread belt upon which a user can run or walk, a motor assembly and motor driver to move the tread belt, a plurality of foot sensors, a tread belt motion sensor, a measurement system to estimate user motion based on foot and tread belt sensor signals, and a motor controller to adjust motor assembly speed based on estimates of user motion. The system is capable of making improved user motion estimates and of using them to provide improved belt speed control. In one embodiment, user position, speed, and acceleration are estimated at each user footfall while estimates are continually revised between footfalls. In one embodiment, foot sensors are capacitive proximity sensors which are effective, fully concealable, and economical.

A method and apparatus for carrying out a set of vehicle inspections including, but not limited to, wheel alignment measurement, brake testing, tire tread depth measurement, tire pressure monitoring, vehicle battery testing, and a review of vehicle diagnostic trouble codes in an efficient manner using a multi-function vehicle service system and a single vehicle service bay or inspection lane. Results of the vehicle inspections are incorporated into customized reports generated for a customer or for a technician, and which may be utilized to obtain approval from the customer to conduct necessary repairs and/or provide beneficial vehicle services.

A tire assembly with integrated power generation features includes one or more piezoelectric devices configured to generate electric charge therein upon being subjected to mechanical strains associated with flexure of tire or wheel components. The piezoelectric device may be incorporated in a variety of tire structures and in many different locations. In pneumatic tire structures, the piezoelectric device and related electronics may be embedded in crown or sidewall locations among such selected components as the exterior tread portion, first and second steel belts of a belt package, carcass, cap ply portion, inner liner, zone base, etc. The piezoelectric device with optional rubber casing may also be attached to such locations as the inner liner and tire exterior. Piezoelectric devices may also be integrated with a tire and safety support combination that is configured to operate in an extended mobility mode when the tire structure loses air pressure. Piezoelectric devices may alternatively be integrated with a non-pneumatic structurally supported tire such as one including a reinforced annular band, a plurality of web spokes extending transversely across and radially inward from the annular band, a mounting band at the inner end of the web spokes and a tread portion disposed on the annular band.

A rubber composition usable for the manufacture of tires, based on at least one diene elastomer, a reinforcing inorganic filler and a coupling agent providing the bond between the inorganic filler and the elastomer, wherein said inorganic filler comprises a silicon carbide having the following characteristics: (a) a BET specific surface area of between 20 and 200 m<2>/g; (b) an average particle size (by mass), dw, of between 10 and 350 nm. Tires or semi-finished products for tires such as treads comprising said rubber composition.