A travel cover having a rigid top cap, a rigid bottom cap, and an elongated flexible enclosure extending between the rigid top cap and the rigid bottom cap. The elongated enclosure is openable and closable to receive and retrieve contents. The travel cover has a longitudinally expanded mode for carrying contents and a collapsed mode for folding the enclosure into the rigid top cap and the rigid bottom cap to form a compact carrying case.

A travel cover having a rigid top cap, a rigid bottom cap, and an elongated flexible enclosure extending between the rigid top cap and the rigid bottom cap. The elongated enclosure is openable and closable to receive and retrieve contents. The travel cover has a longitudinally expanded mode for carrying contents and a collapsed mode for folding the enclosure into the rigid top cap and the rigid bottom cap to form a compact carrying case.

A golf bag retention yoke comprising at least one beverage container holder well and/or at least one golf tee holder aperture integrally formed therein. The at least one beverage container holder is structured and operable to removably retain a beverage container and the least one golf tee holder aperture structured and operable to removably retain a golf tee.

A autonomous robotic golf caddy which is capable of following a portable receiver at a pre-determined distance, and which is capable of sensing a potential impending collision with an object in its path and stop prior to said potential impending collision.

A front wheel folding structure of a three-wheeled cart, including: a pipe sleeve of a front wheel rack, a rotational joint, a first joint base, a second joint base, and a locking mechanism. The first joint base and the second joint base are symmetrically disposed at two sides of the rotational joint. The locking mechanism is configured to lock the rotational joint. The rotational joint is coupled to the first joint base and the second joint base. The rotational joint includes a front part and a rear part, and the front part is adapted to rotate in relative to the rear part. The front part of the rotational joint is connected to the pipe sleeve of the front wheel rack and is sleeved with a first gear, and a second gear is disposed in the inner side of the first joint base and is engaged with the first gear.

A autonomous robotic golf caddy which is capable of following a portable receiver at a pre-determined distance, and which is capable of sensing a potential impending collision with an object in its path and stop prior to said potential impending collision.

A device and system for measuring and calculating distance on a golf course involving a laser rangefinder device, magnetic detachable global positioning device, magnetic detachable radio frequency device, magnetic detachable golf statistical performance tracking device. The combination of devices deliver a golf distance and golf statistical performance tracking system capable of identifying the exact position of a golf shot and recording club used to hit the ball, latitude and longitude physical location and golf statistical performance data and information for golf. At least one object sensor and/or radio frequency club identification tag inserted and/or embedded in the grip or a golf club and/or the golf club component. One or more of the detachable devices comprise of at least one object or combination of object reading radio frequency sensor and/or swing detection sensor and/or shock sensor and/or vibration sensor and/or accelerometer and/or golf club impact sensor and/or magnetometer sensor and/or sound sensor; and the system is configured to at least partially detect a golf swing and/or golf club strike on the ball and/or vibrations as a result of contact with a ball and/or sound generated by contact with a golf ball object. Further use of the detachable device identifying a golf shot delivers a system to collect statistical and performance data and performance information through monitoring an action, such as a golf swing and/or golf shot and/or recognition of a shot by a golfer and/or collection of the shot event by a golfer.

Disclosed, among other things, are a golf accessory platform and example golf accessories, offering functionality of holding headcovers, gloves, hats, or other items while on and off of a course, offering protection when clubs are being transported or in play, being used as a training device such as an alignment rod, training for increasing swing speeds, storing alignment rods, sticks, or other golf accessories. It may also allow swing tracking practice, provide a way to protect oneself, and provides a prominent space for advertising or branding opportunities.

Disclosed, among other things, are a golf accessory platform and example golf accessories, offering functionality of holding headcovers, gloves, hats, or other items while on and off of a course, offering protection when clubs are being transported or in play, being used as a training device such as an alignment rod, training for increasing swing speeds, storing alignment rods, sticks, or other golf accessories. It may also allow swing tracking practice, provide a way to protect oneself, and provides a prominent space for advertising or branding opportunities.

A golf bag trolley with an extendable frame, comprising a front wheel set, a left rear wheel set, a right rear wheel set, a handlebar set, a frame, a connecting base, an upper bag support and a lower bag support. The front wheel set is installed at the lower bag support, the left rear wheel set is installed on the connecting base, the right rear wheel set is installed on the connecting base, the frame comprises an upper tube and a lower tube, the upper tube has a smaller outer diameter than the lower tube, the upper tube is inserted into the lower tube, the lower bag support is installed at the lower tube, the handlebar set is installed at the upper tube, the upper bag support is installed on the upper tube, and a locking mechanism is arranged between the lower tube and the upper tube.