Abstract: Systems and methods for coupling subsea tubular members together are provided. An apparatus may be used to properly orient and/or provide communication between a first subsea tubular member that is being landed on a second subsea tubular member. An apparatus for coupling subsea tubular members may include an alignment sub and a corresponding alignment member. The alignment sub includes: a generally cylindrical body having one or more fluid, electric, or fiber optic lines extending therethrough, one or more couplings coupled to at least one end of the alignment sub, and an orientation profile disposed on a surface of the alignment sub. The alignment member has a profile designed to interface with the orientation profile of the alignment sub. One of the alignment sub and the alignment member remains stationary while the other rotates relative to the stationary structure.

Abstract: Systems and methods for landing a tubing hanger in a wellhead and then orienting a tree (or spool, or flowline connection body) relative to the tubing hanger while landing the tree on the wellhead are provided. This alignment is accomplished without the use of either a tubing spool or a BOP stack with an orientation pin. The tubing hanger alignment devices may be used to orientate the tree as the tree is landed so that the couplings and stabs between the tree and the tubing hanger line up with each other just at the moment of landing.

Abstract: A precured tread assembly for mounting on a tire casing is provided. The precured tread assembly includes a tread portion having a mounting surface and an opposing ground-engaging surface with a plurality of grooves therein. A reinforcing fabric layer is attached to the mounting surface of the tread portion.

Abstract: A tire includes a pair of sidewalls and a circumferential tread having a zigzag circumferential groove. The zigzag circumferential groove is defined by a groove bottom, a pair of groove walls, and a pair of groove edges defining an intersection between each groove wall and a top surface of the circumferential tread, wherein each of the groove edges smoothly widens and narrows along the groove. The circumferential tread has a first circumferential pitch with first and second circumferential pitch lengths. The first circumferential pitch includes a first zigzag circumferential groove segment and a second zigzag circumferential groove segment that form a first intersection angle. The second circumferential pitch includes a third zigzag circumferential groove segment and a fourth zigzag circumferential groove segment that form a second intersection angle different from the first intersection angle.

Abstract: A pneumatic tire is disclosed having a tread portion including a tread groove having a groove bottom and groove sidewalls. The tread groove has a groove width defined as a shortest distance between the groove sidewalls. The groove has a groove length extending generally parallel to the groove sidewalls. A sequence of circumferentially spaced stone ejector ribs span between the opposed groove sidewalls.

Abstract: Method for determining concentric mounting of a tire on a wheel. In one embodiment, method for determining concentric mounting of a tire on a wheel comprises: providing a tire including at least one bead area, wherein at least one rim centering tolerance indicator is oriented in the at least one bead area, and wherein the at least one rim centering tolerance indicator extends circumferentially about the tire; mounting the tire on a wheel to form a tire-wheel assembly, the wheel includes a circular cross-section including a center point; rotatably mounting the tire-wheel assembly on a tire balancing machine; providing a light source adjacent to the tire-wheel assembly, the light source projects a projected reference point upon the at least one bead area; rotating the tire-wheel assembly; and observing the runout of the projected reference point relative to the at least one rim centering tolerance indicator.

Abstract: An agricultural tire has an equatorial plane separating first and second sides. First and second inner sixths of the treads extend between the equatorial plane and circumferential reference planes disposed axially one-sixth of a tread width on either side of the equatorial plane. First and second middle sixths of the tread extend between inner circumferential planes and middle circumferential reference planes one-sixth of the tread width from the inner circumferential reference planes. Outer sixths extend between the middle circumferential reference planes and outer circumferential reference planes disposed one-sixth of the tread width from the middle planes. Net tread volume ratio is approximately 40 percent, where between 36 and 39 percent of lug volume is in the inner sixths, between 32 to 35 percent in the middle sixths, and 27 to 30 percent in the outer sixths of the tread.

Abstract: A pneumatic agricultural tire includes first and second rows of angled lugs. Each lug is provided with a leading wall rising up from a tread floor to a leading edge of the lug surface. The leading wall has a wedge shaped leading nose rising up from the tread floor and sloped in the trailing direction so that ground stubble is engaged by and pushed aside by the wedge shaped leading nose thereby reducing stubble damage at a root of the leading wall.

Abstract: A tire includes a pair of sidewalls and a circumferential tread having a zigzag circumferential groove. The zigzag circumferential groove is defined by a groove bottom, a pair of groove walls, and a pair of groove edges defining an intersection between each groove wall and a top surface of the circumferential tread, wherein each of the groove edges smoothly widens and narrows along the groove. The circumferential tread has a first circumferential pitch with first and second circumferential pitch lengths. The first circumferential pitch includes a first zigzag circumferential groove segment and a second zigzag circumferential groove segment that form a first intersection angle. The second circumferential pitch includes a third zigzag circumferential groove segment and a fourth zigzag circumferential groove segment that form a second intersection angle different from the first intersection angle.

Abstract: A pneumatic tire is disclosed having a tread portion including a tread groove having a groove bottom and groove sidewalls. The tread groove has a groove width defmed as a shortest distance between the groove sidewalls. The groove has a groove length extending generally parallel to the groove sidewalls. A sequence of circumferentially spaced stone ejector ribs span between the opposed groove sidewalls.

Abstract: A precured tread assembly for mounting on a tire casing is provided. The precured tread assembly includes a tread portion having a mounting surface and an opposing ground-engaging surface with a plurality of grooves therein. A reinforcing fabric layer is attached to the mounting surface of the tread portion.

Abstract: A pneumatic agricultural tire includes first and second rows of angled lugs. Each lug is provided with a leading wall rising up from a tread floor to a leading edge of the lug surface. The leading wall has a wedge shaped leading nose rising up from the tread floor and sloped in the trailing direction so that ground stubble is engaged by and pushed aside by the wedge shaped leading nose thereby reducing stubble damage at a root of the leading wall.

Abstract: A pneumatic tire includes a tread portion having a tread groove having a groove bottom and groove sidewalls. A row of rounded stone ejectors are spaced apart along a length of the groove. Each rounded stone ejector has a base attached to the groove bottom and independent from the groove sidewalls. Each rounded stone ejector has a rounded peak and is continuously tapered from the base to the rounded peak.

Abstract: A pneumatic tire for agricultural equipment or forestry equipment includes a circumferential tread, a pair of sidewalls, and a pair of bead portions. A steel reinforced radial carcass ply extends circumferentially about the tire. The carcass ply includes an axially inner portion and axially outer turn-up portions. First and second steel reinforced belts are disposed between the carcass ply and the circumferential tread. Axial ends of the belts are separated by belt wedges. The tire includes a pair of sidewall inserts. Each sidewall insert extends continuously from an upper end extending between the first belt and the carcass ply, through a sidewall region of the tire, to a lower end extending between the inner portion of the carcass ply and one of the turn-up portions of the carcass ply. A tie gum layer binds an inner liner to the carcass ply.

Abstract: An agricultural tire has an equatorial plane separating first and second sides. First and second inner sixths of the treads extend between the equatorial plane and circumferential reference planes disposed axially one-sixth of a tread width on either side of the equatorial plane. First and second middle sixths of the tread extend between inner circumferential planes and middle circumferential reference planes one-sixth of the tread width from the inner circumferential reference planes. Outer sixths extend between the middle circumferential reference planes and outer circumferential reference planes disposed one-sixth of the tread width from the middle planes. Net tread volume ratio is approximately 40 percent, where between 36 and 39 percent of lug volume is in the inner sixths, between 32 to 35 percent in the middle sixths, and 27 to 30 percent in the outer sixths of the tread.

Abstract: An agricultural tire has an equatorial plane separating first and second sides. First and second inner sixths of the treads extend between the equatorial plane and circumferential reference planes disposed axially one-sixth of a tread width on either side of the equatorial plane. First and second middle sixths of the tread extend between inner circumferential planes and middle circumferential reference planes one-sixth of the tread width from the inner circumferential reference planes. Outer sixths extend between the middle circumferential reference planes and outer circumferential reference planes disposed one-sixth of the tread width from the middle planes. Net tread volume ratio is approximately 40 percent, where between 36 and 39 percent of lug volume is in the inner sixths, between 32 to 35 percent in the middle sixths, and 27 to 30 percent in the outer sixths of the tread.

Abstract: A tire is disclosed having a tread extending from a first tread edge to a second tread edge and having a plurality of blocks defining a plurality of lateral grooves. The lateral grooves have a groove bottom defining a radial groove depth. A first biting side extends outwardly from the groove bottom to a first biting edge, and a first non-biting side extending outwardly from the groove bottom to a first non-biting edge. At least one peak is disposed in at least one of the lateral grooves. The peak extends outwardly from the groove bottom and terminates radially at an outer end and axially at a distance from the equatorial plane less than or equal to one half of the tread width. The peak has a height between 25 percent and 75 percent of the depth of its lateral groove. Multiple peaks may be disposed within a groove.

Abstract: A pneumatic agricultural tire includes first and second rows of angled lugs. Each lug is provided with a leading wall rising up from a tread floor to a leading edge of the lug surface. The leading wall has a wedge shaped leading nose rising up from the tread floor and sloped in the trailing direction so that ground stubble is engaged by and pushed aside by the wedge shaped leading nose thereby reducing stubble damage at a root of the leading wall.

Abstract: An agricultural tire has an equatorial plane separating first and second sides. First and second inner sixths of the treads extend between the equatorial plane and circumferential reference planes disposed axially one-sixth of a tread width on either side of the equatorial plane. First and second middle sixths of the tread extend between inner circumferential planes and middle circumferential reference planes one-sixth of the tread width from the inner circumferential reference planes. Outer sixths extend between the middle circumferential reference planes and outer circumferential reference planes disposed one-sixth of the tread width from the middle planes. Net tread volume ratio is approximately 40 percent, where between 36 and 39 percent of lug volume is in the inner sixths, between 32 to 35 percent in the middle sixths, and 27 to 30 percent in the outer sixths of the tread.