IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0893594
(2001-06-29)
|
우선권정보 |
JP-0199140 (2000-06-30) |
발명자
/ 주소 |
- Kaneko, Ryoichi
- Ikuno, Tokihiko
- Yoshie, Toshiro
|
출원인 / 주소 |
|
대리인 / 주소 |
Birch, Stewart Kolasch & Birch, LLP
|
인용정보 |
피인용 횟수 :
12 인용 특허 :
15 |
초록
▼
A baby carriage includes a pair of front legs 12, 12 each having a front wheel 11 at its lower end of the leg 12, a pair of rear legs 14, 14 each having a rear wheel 13 at its lower end of the leg 14, a pair of side connecting rods 23, 23 each having one end rotatably connected to a middle part of t
A baby carriage includes a pair of front legs 12, 12 each having a front wheel 11 at its lower end of the leg 12, a pair of rear legs 14, 14 each having a rear wheel 13 at its lower end of the leg 14, a pair of side connecting rods 23, 23 each having one end rotatably connected to a middle part of the front leg 12 and the other end rotatably connected to a middle part of the rear leg 14, a pair of handle pipes 18, 18 having their middle parts rotatably connected to upper parts of the rear legs 14, 14 respectively and a pair of locking mechanisms 25, 25 connecting respective lower ends of the handle pipes 18, 18 with upper ends of the front legs 12, 12 respectively. Each of the locking mechanisms 25, 25 is adapted so as to be in a fixing state where the handle pipe 18 is fixed with respect to the front leg 12 substantially along an extending direction of the front leg 12 and also in a folding state where the handle pipe 18 is folded close to the front leg 12, allowing a number of constituents and a height of the baby carriage to be reduced together.
대표청구항
▼
A baby carriage includes a pair of front legs 12, 12 each having a front wheel 11 at its lower end of the leg 12, a pair of rear legs 14, 14 each having a rear wheel 13 at its lower end of the leg 14, a pair of side connecting rods 23, 23 each having one end rotatably connected to a middle part of t
A baby carriage includes a pair of front legs 12, 12 each having a front wheel 11 at its lower end of the leg 12, a pair of rear legs 14, 14 each having a rear wheel 13 at its lower end of the leg 14, a pair of side connecting rods 23, 23 each having one end rotatably connected to a middle part of the front leg 12 and the other end rotatably connected to a middle part of the rear leg 14, a pair of handle pipes 18, 18 having their middle parts rotatably connected to upper parts of the rear legs 14, 14 respectively and a pair of locking mechanisms 25, 25 connecting respective lower ends of the handle pipes 18, 18 with upper ends of the front legs 12, 12 respectively. Each of the locking mechanisms 25, 25 is adapted so as to be in a fixing state where the handle pipe 18 is fixed with respect to the front leg 12 substantially along an extending direction of the front leg 12 and also in a folding state where the handle pipe 18 is folded close to the front leg 12, allowing a number of constituents and a height of the baby carriage to be reduced together. load between a towing tractor which includes a three-point linkage which includes three linkage arms, an associated hydraulic draft control system, and a tow-bar, and a towed above ground implement which includes a draw-bar which attaches to the tow-bar of the tractor, said apparatus comprises: a shock absorber which is: (i) connected at one end thereof to at least the two lower arms of the tractor's three-point linkage; (ii) at the other end thereof is connected to the draw-bar of the towed implement in a manner that allows the draft control system of the tractor to be activated so as to transfer load between the tractor and the implement, as is required to maintain the desired wheel slippage of the tractor's traction axle while towing the implement; and (iii) configured to absorb any vertical forces associated with a change in the effective load of the implement. 2. The apparatus as claimed in claim 1 wherein the shock absorber is a leaf spring. 3. The apparatus as claimed in claim 2 wherein the leaf spring is attached to at least the two lower arms of the three-point linkage via a mounting-frame which connects to the terminal ends of the linkage arms. 4. The apparatus as claimed in claim 3 wherein the leaf spring is fixedly attached to the mounting-frame so as to connect to the draw-bar of the towed implement in a manner which caters for any lateral movement of the towed implement. 5. The apparatus as claimed in claim 4 wherein the leaf spring is pivotally attached to the mounting-frame so as to allow for any lateral movement of the towed implement. 6. The apparatus as claimed in claim 5 wherein the leaf spring pivots along the same axis as that which the draw-bar of the implements pivots, with respect to the tow-bar of the tractor. 7. The apparatus as claimed in claim 5 wherein a chain directly attaches the leaf spring to the draw-bar of the towed implement. 8. The apparatus as claimed in claim 7 wherein the length of chain is roughly equivalent to half the distance, which the draft control system can raise or lower the three-point linkage arms. 9. The apparatus as claimed in claim 5 wherein the leaf spring is connected to the draw-bar via a chain having an angle of substantially between 30 and 75 degrees with respect to the draw-bar. 10. The apparatus as claimed in claim 9 wherein this angle is substantially 45 degrees with respect to the implement's draw-bar. 11. The apparatus as claimed in claim 2 wherein the leaf spring is attached to all three arms of the three point linkage via a mounting-frame which connects to the terminal ends of the linkage arms. 12. The apparatus as claimed in claim 11 wherein the leaf spring is fixedly attached to the mounting-frame so as to connect to the draw-bar of the towed implement in a manner which caters for any lateral movement of the towed implement. 13. The apparatus as claimed in claim 2 wherein the leaf spring is connected to the draw-bar so that a preset tension can always be maintained on the leaf spring through operation of the draft control system. 14. The apparatus as claimed in claim 13 wherein the leaf spring may be directly or indirectly connected to the draw-bar of the tractor via at least one chain. 15. The apparatus as claimed in claim 13 wherein the leaf spring is directly or indirectly connected to the draw-bar of the tractor via at least one length of wire rope. 16. The apparatus as claimed in claim 1 wherein the shock absorber is attached to a load scale indicator device. 17. The apparatus as claimed in claim 16 wherein the load scale indicator is any device capable of relaying the degree of tension that is being applied to the shock absorber. 18. The apparatus as claimed in claim 16 wherein the load scale indicator device is designed to relay to a farmer when the shock absorber or draft control system has reached, or is approaching, an overload condition. 19. An apparatus for transferring load between a towing tractor which includes a three-point linkage
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