Compact wheeled carrier device with movable, stowable rear wheels and frame
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B62B-003/00
B62B-003/02
B62B-003/12
B62B-007/06
B62B-007/04
출원번호
US-0577530
(2014-12-19)
등록번호
US-9764752
(2017-09-19)
발명자
/ 주소
Liao, Gordon
출원인 / 주소
UNIQUE PRODUCT & DESIGN CO., LTD.
대리인 / 주소
Weyer, Esq., Stephen J.
인용정보
피인용 횟수 :
0인용 특허 :
21
초록▼
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
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.
대표청구항▼
1. A foldable wheeled cart, said cart comprising: a forward frame forming a plane in the latitudinal direction and forming a side elevational profile, wherein the forward frame includes a front portion and a rear portion; at least one front wheel movably mounted to the front portion of the forward f
1. A foldable wheeled cart, said cart comprising: a forward frame forming a plane in the latitudinal direction and forming a side elevational profile, wherein the forward frame includes a front portion and a rear portion; at least one front wheel movably mounted to the front portion of the forward frame; an upper frame movably mounted at its lower portion to the rear portion of the forward frame, forming a push-pull handle grasp at the upper portion of the upper frame; a rear wheel mounting frame including a swiveling interconnector at its center point which interconnects the rear wheel mounting frame to the rear portion of the front frame, further including at least two rear wheels, each rear wheel movably mounted at each of two opposite sides of the rear wheel mounting frame forming a rear frame plane in the latitudinal direction between the rear wheels in the same latitudinal plane of said forward frame; a plurality of linkages secured between an underside of the forward frame and at least two sliders, which sliders are movably mounted along the rear wheel mounting frame swiveling interconnector, and each slider is further interconnected to a movable rear wheel axle connected to each rear wheel, wherein, in a first operational position, each rear wheel provides rolling support to the wheeled cart, and in a second stowed position the rear mounting frame is swiveled ninety degrees along the swiveling interconnector, and the swiveling motion of the rear mounting frame in relation to the forward frame supplies rotational motion between the rear mounting frame and the forward frame which synchronously moves each of the at least two rear wheels from the first operational position to the second stowed position, where each rear wheel is parallel with the latitudinal forward frame plane and parallel with the at least one forward wheel and the at least two rear wheels are linearly aligned with the forward frame. 2. The foldable wheeled cart of claim 1, wherein the axis of rotation of the at least one front wheel, and the axis of rotation of each of the rear wheels are substantially linearly aligned closely adjacent to the latitudinal plane formed by the forward frame, when the front and rear wheels are in their second, stowed position, and said wheels are parallel with the forward frame's latitudinal plane. 3. The foldable wheeled cart in accord with claim 1, wherein cargo retaining means are included on the upper frame and the forward frame. 4. The foldable wheeled cart in accord with claim 3, wherein the cargo retaining means releaseably retain at least one golf equipment bag. 5. The foldable wheeled cart in accord with claim 1, wherein the upper frame is manually adjustable to a plurality of push-pull handle positions to accommodate the specific height of a user. 6. The foldable wheeled cart in accord with claim 1, wherein the at least one forward wheel is mourned to at least one movable support arm that is retractable and extensible along a guide channel formed along the forward frame, and a series of male-female protrusions and recesses provide manually selectable securement positions between the movable wheel arm and at least one portion of the guide channel, and when the at least one forward wheel is released from the operational position, the series of male-female protrusions guide the said front wheel towards the wheel's second stowed position, positioning the wheel parallel with the latitudinal plane of the forward frame in the stowed position, closer to the rear frame. 7. The foldable wheeled cart in accord with claim 1, wherein, at least one rear wheel is supplied with a manually adjustable parking brake which is selectively adjustable to prevent rolling movement of the rear wheel along a rolling surface in an engaged position of the brake, and in a disengaged position of the brake, rolling movement of the wheel is permitted. 8. The foldable wheeled cart in accord with claim 1, wherein a portion of the lower part of the upper frame is retained to a portion of the rear wheel mounting frame when positioned in said first operational position, and manual manipulation of the upper frame releases the upper frame permitting it to be folded to said second stowed position. 9. The foldable wheeled cart in accord with claim 6, wherein a securing portion of the front wheel movable support arm is retained to a portion of the forward wheel frame mounting bracket in a first, operative position, and manual movement of a latch releases the securing portion of the forward frame, and permits movement of the forward wheel between said first, operational position, and said second stowed position. 10. The foldable wheeled cart in accord with claim 1, wherein rotational motion of the forward frame in relation to the rear wheel frame supplies the synchronous motion which causes folding and unfolding of the rear wheels. 11. A foldable wheeled cart, said cart comprising: a forward frame forming a latitudinal plane and a side elevational profile; at least one front wheel mounted to the forward frame; an upper frame portion, including a push-pull handle; a rear wheel mounting frame occupying the same latitudinal plane with the forward frame, which rear wheel mounting frame includes at least two rear wheels; and a swiveling interconnector mounted to the center of the rear wheel mounting frame which interconnects the rear wheel mounting frame to the rear of the forward frame wherein a plurality of linkages are secured between the forward frame and at least one sliding portion, movably mounted along the rear wheel mounting frame, and the at least one sliding portion is further interconnected to at least one movable rear wheel axle connected to each rear wheel; and wherein the foldable wheeled cart has a first operational position in which said front and rear wheels are oriented for rolling movement of the cart, and the rear wheel mounting frame is oriented perpendicularly to the forward frame and a second, compact, stowed position, wherein the rear wheel mounting frame is swiveled along the swiveling interconnector ninety degrees along said latitudinal plane, which swiveling movement positions the axis of rotation of each of the rear wheels so that each rear wheel is substantially linearly aligned closely adjacent to the forward frame, and said rear wheels are in the stowed position parallel with the latitudinal plane of the forward frame; and the forward, rear and upper frames, in the second, compact stowed position are all substantially co-planar, along with each of said rear wheels, forming the side elevational profile. 12. The foldable wheeled cart in accord with claim 11, wherein cargo retaining means releasably retain at least one golf equipment bag. 13. The foldable wheeled cart in accord with claim 11, wherein in the first operational position, each rear wheel provides rolling support to the wheeled cart, and in the second stowed position the rear mounting frame is swept through an angle of ninety degrees, which motion of the rear mounting frame in relation to the forward frame supplies synchronous motion between the rear mounting frame and the forward frame which moves each of the at least two rear wheels from the first operational position to the stowed position, where each rear wheel is parallel with the latitudinal forward frame plane and the at least one forward wheel and the at least two rear wheels are linearly aligned closely adjacent to the forward frame. 14. The foldable wheeled, cart in accord with claim 11, wherein rotational motion of the forward frame, in relation to the rear wheel frame, supplies the synchronous motion which causes folding and unfolding of the rear wheels. 15. The foldable wheeled cart in accord with claim 11, wherein cargo retaining means are included on at least the upper frame and the forward frame. 16. The foldable wheeled cart in accord with claim 11, wherein cargo retaining means releasably retain at least one golf equipment bag. 17. The foldable wheeled cart of claim 1, wherein the axis of rotation of each rear wheel is substantially in the same plane when in the stowed position. 18. The foldable wheeled cart of claim 17, Wherein the axis of rotation of the at least one front wheel is in the same plane as the plane of the axis of rotation of each of the rear wheels when in the stowed positon. 19. The foldable wheeled cart of claim 1, wherein when in the stowed position, the at least one front wheel and the rear wheels are substantially linearly aligned with each other.
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이 특허에 인용된 특허 (21)
Kimberley, Kevin, Collapsible four wheel golf cart.
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