Abstract: A wheeled carrier device such as a baby stroller, golf cart, child carrier, or general carrier or cargo cart, comprising a bottom frame with at least two rear wheels and at least one front wheel, and may include a movably mounted upper carrier frame with a selectively removable, adjustable and/or reversible carrying element which may include child seating, with a unique wheel folding mechanism that interconnects all the wheels, so that simple movement of a wheel folding grasp synchronously moves all the wheels between the operative, rolling position and their stowed fold flat positions parallel with the bottom frame, with the wheel folding mechanism operable independently of collapsing movement of an optional upper carrier frame which also folds flat and parallel with the bottom frame.

Abstract: A wheeled carrier device such as a baby stroller, golf cart, child carrier, or general carrier or cargo cart, comprising a bottom frame with at least two rear wheels and at least one front wheel, and may include a movably mounted upper carrier frame with a selectively removable, adjustable and/or reversible carrying element which may include child seating, with a unique wheel folding mechanism that interconnects all the wheels, so that simple movement of a wheel folding grasp synchronously moves all the wheels between the operative, rolling position and their stowed fold flat positions parallel with the bottom frame, with the wheel folding mechanism operable independently of collapsing movement of an optional upper carrier frame which also folds flat and parallel with the bottom frame.

Abstract: A cart includes a bottom frame having a first transverse frame member and a longitudinal frame member, first and second back wheels, a first front wheel, a carrier frame, a collapsing mechanism, and a folding mechanism. First and second back wheel holders pivotably connect the first and second back wheels to opposite ends of the first transverse frame member, respectively. A first slide block slides along the longitudinal frame member. First and second guide units connect the first slide block to the first and second back wheel holder. A connecting member connects the carrier frame to the first slide block. A first front wheel holder pivotably connects the first front wheel to the bottom frame. A third guide unit guides the first front wheel holder. A longitudinal connecting arm connects the first slide block to the third guide unit for the first front wheel holder.

Abstract: A cart, in particular a golf trolley, means including a bottom frame having a first transverse frame member and a longitudinal frame member, a first and a second back wheel, a first front wheel mounted to the bottom frame, a carrier frame mounted to the bottom frame, a collapsing mechanism for bringing the carrier frame from a carrying position into a collapsed position, and a folding mechanism for folding the first and second back wheel and the first front wheel from a drive position into a stow position.

Abstract: A carrier device and a stowing method are disclosed. The rear wheel frame is disposed on the front wheel frame. The front wheel is disposed on a first end of the front wheel frame. The rear wheels are disposed on two ends of the rear wheel frame. The upper frame is disposed on a second end of the front wheel frame. The upper stoppers are disposed on the handle frame linkage, the upper frame or the handle frame. The carrier device has a stowing state including a stowing position, in the stowing position, a plane formed by the front wheel and a plane formed by one of the rear wheels are substantially perpendicular to each other, and the upper stoppers are disposed on two sides of the plane formed by the front wheel respectively. This disclosure has the advantages of easy folding and stowing.

Abstract: A wheeled cart includes a number of unique methods to synchronously stow all of the rear wheels of a fold flat, compact wheeled cart device without removing any of the wheels themselves and the innovations are applicable to cargo carriers, golf bag carts, trolleys, baby strollers, and other devices for moving cargo. In alternative designs, the folding motion of either the forward wheel frame, or the swiveling motion of the rear wheel frame, or both, synchronously setup or stow the cart's at least two rear wheels to achieve an ultra-thin stowed profile, orienting all the cart's wheels in a co-planar stowed relationship, closely parallel with all other parts.

Abstract: A wheeled cart includes a number of unique methods to synchronously stow all of the rear wheels of a fold flat, compact wheeled cart device without removing any of the wheels themselves and the innovations are applicable to cargo carriers, golf bag carts, trolleys, baby strollers, and other devices for moving cargo. In alternative designs, the folding motion of either the forward wheel frame, or the swiveling motion of the rear wheel frame, or both, synchronously setup or stow the cart's at least two rear wheels to achieve an ultra-thin stowed profile, orienting all the cart's wheels in a co-planar stowed relationship, closely parallel with all other parts.

Abstract: A power assisting transmission system of a power assisting bike drives a gear of the transmission system to produce a lateral force in forward and backward pedaling and to detect an axial displacement of a sliding gear in the transmission system to output a voltage signal to control motive power for driving a motor, to achieve forward and backward transmissions or a back pedaling brake effect.

Abstract: The golf bag cart includes a central base, a bottom cart stand, an upper cart stand, a wheel support, a first linkage, a second linkage, and a lock mechanism. The bottom cart stand has a top end fastened to the central base, a bottom end coupled with a front wheel, and a slider. The upper cart stand has a bottom end pivotally connected with the central base. Two wheel supports, disposed respectively and inclinedly at two sides of the central base, are joined with a steel wire to form a structure similar to a triangle. The first linkage connects the upper cart stand and the slider. The second linkage connects the slider and the wheel support. The lock mechanism mounted on the top end of the slider enables the upper cart stand and the bottom cart stand to lock with each other.

Abstract: A power assisting transmission system of a power assisting bike is provided for driving a gear of the transmission system to produce a lateral force in forward and backward pedaling and detect an axial displacement of a sliding gear in the transmission system to output a voltage signal to control motive power for driving a motor, so as to achieve forward and backward transmissions or a back pedaling brake effect.

Abstract: A front wheel folding device of a golf bag cart includes: an upper frame; a lower frame; a support base; a pin coupled to the upper frame and fixed to the lower frame and a wheel axle of two rear wheels; a front wheel frame; and a link rod. The front wheel frame has an end axially coupled to the lower frame and another end having the front wheel. The link rod is pivotally coupled between the upper frame and the front wheel frame. The link rod is linked to fold the upper frame and the lower frame together, and to fold the front wheel and the rear wheels together, to achieve the effect of a simpler and quicker operation.

Abstract: A two-fold four-wheel golf bag cart folding device includes a lower cart frame having a connecting plate installed at an upper end of the lower cart frame and a lower supporting base disposed at a lower end of the lower cart frame. An upper cart frame includes a lower end coupled to the connecting plate and has an upper supporting base and a handle module at an upper end, such that the upper supporting base and the lower supporting base are fixed to the golf bag. A rear wheel stand is mounted on both sides of the connecting plate and has a rear wheel. A pull rod includes an end coupled to the handle module and the other end coupled to the rear wheel stand. A front wheel set has two front wheels installed on both sides of the lower supporting base respectively. A locking mechanism is installed between an upper end of the upper cart frame and a lower end of the handle module and has a function of fixing an angle between the upper cart frame and the handle module.

Abstract: A baby stroller is formed by a stroller frame and a chair, and the stroller frame includes a rotatable base. When the baby stroller is unfolded, the base is provided for abutting the stroller frame and positioned automatically, and when the baby stroller is folded, the chair and the stroller frame are folded and positioned directly together with the rotation of the base. The chair includes a folding joint, such that the chair can be folded directly onto the stroller frame to provide a simple, easy and quick operation and to achieve the effect of reducing the storage volume of the baby stroller.

Abstract: A three-fold three-wheel golf bag cart folding device includes a main shaft, a rear wheel set, a link mechanism, a lower cart frame, a front wheel set and an upper cart frame, and the upper cart frame can be pulled and rear wheels can be driven by the link mechanism to fold or unfold, such that the golf bag cart can be folded into a flat shape by a simple and easy operation to achieve the effects of reducing the storage space and facilitating users to carry and transport the cart.

Abstract: A two-fold four-wheel golf bag cart folding device comprises: a lower cart frame; an upper cart frame; a rear wheel stand; a pull rod; a front wheel set; a locking mechanism, installed between an upper end of the upper cart frame and a lower end of the handle module, and having a function of fixing an angle between the upper cart frame and the handle module; and a four-link-rod mechanism, installed among the handle module, the rear wheel stand and the pull rod. The front wheels can be closed in synchronously while rear wheels are being folded, and the four wheels touch the ground simultaneously.

Abstract: A folding joint of a golf bag cart includes a main body fixed onto a cart frame and having a chamber formed inside the main body and a long slot formed on both sides of the chamber separately. A driving block is installed in the chamber of the main body. A spring installed at an upper end of the driving block, and a latch rod is disposed on both sides of the driving block separately. Two rotating members, each has an upper end coupled to the cart frame, a lower end coupled to the main body, and a slide slot with a latch slot formed on the slide slot. Thus, the folding joint can be folded or unfolded to secure the cart frame automatically, to provide a simple and convenient operation.

Abstract: A front wheel folding device for a three-wheel cart including a golf bag cart, a baby cart or a goods transport cart includes: a fixed base with an upper end coupled to a cart frame and having an elastic press plate and a plurality of teeth; a moving base coupled to the fixed base by a rod and having a gear disk engaged with the teeth of the fixed base for performing a reciprocal rotating movement; and a front wheel set mounted to the moving base and having a front wheel. By pressing the press plate, the moving base is released to perform a rotating movement to drive the front wheel to be disposed at a horizontal state and folded. The aligning and folding processes can be completed all at the same time to achieve a convenient and quick operation.

Abstract: A golf bag cart comprises a lower frame including a connecting plate pivotally coupled to a rear wheel stand, a slide element installed at the top of the connecting plate, and an upper carrying base and a lower carrying base for placing and fixing a golf bag; an upper frame coupled to a lower frame and pivotally coupled to the upper carrying base; two front wheel stands coupled to the lower frame and pivotally coupled to the lower carrying base; a link rod module composed of link rod modules and coupled between the upper frame, a slide element and front and rear wheel stands for driving the front and the rear wheel stands or the front and rear wheels to fold or unfold; and a lift switch installed between the upper and lower frames and latched for fixing at a position when the golf bag cart is unfolded.

Abstract: A three-fold three-wheel golf bag cart folding device includes a main shaft, a rear wheel set, a link mechanism, a lower cart frame, a front wheel set and an upper cart frame, and the upper cart frame can be pulled and rear wheels can be driven by the link mechanism to fold or unfold, such that the golf bag cart can be folded into a flat shape by a simple and easy operation to achieve the effects of reducing the storage space and facilitating users to carry and transport the cart.