Abstract: The invention provides for a heavy truck tire tread (2) having a longitudinal direction, a lateral direction and a thickness direction, said tread having a ground-engaging contact surface (CS) and having a main longitudinal center groove (5), two main longitudinal shoulder grooves (3, 7) and two main longitudinal intermediate grooves (4, 6), said five main longitudinal grooves defining six main longitudinal ribs (8, 9, 10, 11, 12, 13), said five main longitudinal grooves comprising one hidden groove, two open grooves and two partially hidden grooves; wherein each of said two partially hidden grooves comprises openings (41, 61) to the ground-engaging contact surface and undersurface channels (42, 62) connecting adjacent openings, longitudinal sipes (43, 63) extending substantially along the longitudinal direction and connecting successive openings to the respective channel; and wherein said hidden groove (5) comprises an undersurface duct (52), a longitudinal sipe (53) extending substantially along the longitu

Abstract: A heavy truck tire tread is provided that has at least four longitudinal grooves, at least four longitudinal grooves comprising two open grooves and at least two partially hidden grooves. The longitudinal grooves defining two shoulder ribs, two intermediate ribs and at least one center rib, wherein the shape, size and position of the grooves are for any section of tread of any given section length L between 12 to 40 mm, the percentage difference in rubber mass of a rib section compared to a respective neighboring rib section of the same section length L in the same rib is less than a maximum percentage difference, wherein the maximum percentage difference for a shoulder rib is Ds(%)=50/L(mm), the maximum percentage difference for an intermediate rib is Di(%)=70/L(mm), and the maximum percentage difference for a full tread section is Da(%)=40/L(mm).

Abstract: The invention provides for a heavy truck tire tread (2) having a longitudinal direction, a lateral direction and a thickness direction, said tread having a ground-engaging surface and comprising at least four longitudinal grooves, the at least four longitudinal grooves (3, 4, 5, 6, 7) comprising two open grooves (4, 6) and at least two partially hidden grooves (3, 5, 7), the partially hidden grooves comprising open portions and duct portions alternated along the longitudinal direction of the tread, said at least four longitudinal grooves defining two shoulder ribs, two intermediate ribs and at least one center rib, wherein the shape, size and position of the grooves are such that for any section of tread of any given section length L between 12 mm and 40 mm, the percentage difference in rubber mass of a rib section compared to a respective neighboring rib section of the same section length L in the same rib is less than a maximum percentage difference, wherein •the maximum percentage difference for a shoulder

Abstract: The jewelry safety chain device is a flexible cable which has a first end spaced apart from a second end, a loop disposed on the flexible cable first end, a clasp disposed on the flexible cable second end, a plurality of eye screws, each eye screw having an eyelet, a shaft extended from the eyelet, a point disposed distally on the shaft, a thread disposed on the shaft medially from the point, each eye screw configured to selectively attach to a link of an existing multi-link band of an existing jewelry item, the flexible cable and cable loop configured to attach to one of the eyelets, the flexible cable configured to pass through a remainder of the eyelets and the clasp configured to attach to one of the eyelets, thereby removably securing a chosen pair of links together in preventing inadvertent jewelry item loss.

Abstract: The present invention relates to a portable security device which attaches to small personal items such as a handbag, wallet, electronic device, laptop computer or musical instrument. The present invention provides a device and method that enables a user to provide a measure of security to a valuable possession. This portable security device, in one exemplary embodiment, consists of a single device that may be attached to the personal item it is monitoring, however the security device may be used in conjunction with a remote. The security device alerts a user if the user should lose possession of the personal item either accidently or due to theft. The security device may also detect any tampering that may have taken place if the user should leave an item unattended.