IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0005270
(2011-01-12)
|
등록번호 |
US-8533908
(2013-09-17)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
4 |
초록
▼
A ball wheel assembly including a wheel ball is provided. The assembly further includes first and second legs. The legs include a mounting portion and a ring-shaped leg cover. The legs are secured together proximate to the mounting portions. The legs further include a leg ball bearing retaining ring
A ball wheel assembly including a wheel ball is provided. The assembly further includes first and second legs. The legs include a mounting portion and a ring-shaped leg cover. The legs are secured together proximate to the mounting portions. The legs further include a leg ball bearing retaining ring and leg ball bearings. The leg ball bearing retaining ring and leg ball bearings are positioned between the leg cover and the wheel ball. The assembly further includes a top housing. The top housing includes a top housing cover, a housing ball bearing retaining ring, and housing ball bearings. The top housing is secured to the legs, and the housing ball bearing retaining ring and housing ball bearings are positioned between the top housing cover and the wheel ball.
대표청구항
▼
1. A ball wheel assembly comprising: a wheel ball;first and second legs comprising: a leg housing having a mounting portion and a ring-shaped leg cover, wherein the legs are secured together proximate to the mounting portions,a leg ball bearing retaining ring and leg ball bearings, wherein the leg b
1. A ball wheel assembly comprising: a wheel ball;first and second legs comprising: a leg housing having a mounting portion and a ring-shaped leg cover, wherein the legs are secured together proximate to the mounting portions,a leg ball bearing retaining ring and leg ball bearings, wherein the leg ball bearing retaining ring and leg ball bearings are positioned between the leg cover and the wheel ball, wherein the leg cover has an inner circumference defining an inner diameter and an outer circumference defining an outer diameter, the inner diameter being between about one-half to about three-quarters the outer diameter, and wherein the leg cover has an inner surface, the inner surface being concave relative to the wheel ball; anda top housing comprising: a top housing cover secured to the legs. 2. The ball wheel assembly of claim 1, wherein the inner diameter is about two-thirds the outer diameter. 3. The ball wheel assembly of claim 1, wherein the dimensions of the first and second legs are substantially identical. 4. The ball wheel assembly of claim 1, wherein the first and second legs are secured together with fasteners. 5. The ball wheel assembly of claim 4, wherein the first and second legs each have at least one mounting hole, each mounting hole being formed to securably receive the fasteners. 6. The ball wheel assembly of claim 4, wherein at least one of the first and second legs has a threaded mounting hole to securably receive one of the fasteners. 7. The ball wheel assembly of claim 4, wherein the first and second legs each have a mounting hole formed to securably receive a fastener and a further mounting hole formed to allow a further fastener to pass through the further mounting hole. 8. The ball wheel assembly of claim 1, wherein the inner surface of the leg cover has a curvature approximately equal to a curvature of the wheel ball. 9. The ball wheel assembly of claim 1, wherein the leg cover is positioned to provide a space between the leg cover and the wheel ball to permit dirt to escape from between the leg cover and the wheel ball. 10. The ball wheel assembly of claim 9, wherein the spacing is defined by a diameter of the leg ball bearings. 11. The ball wheel assembly of claim 1, wherein a cross-section of the wheel ball coplanar with the outer circumference of the leg cover has a diameter between about one-half to about five-sixths the diameter of the wheel ball. 12. The ball wheel assembly of claim 1, wherein a cross-section of the wheel ball coplanar with the outer circumference of the leg cover has a diameter of about three-fourths the diameter of the wheel ball. 13. The ball wheel assembly of claim 1, wherein each leg ball bearing is spaced apart a distance of about 2 mm from a proximate leg ball bearing at a minimum. 14. The ball wheel assembly of claim 1, wherein the top housing cover comprises an outer cover portion and an inner mounting portion. 15. The ball wheel assembly of claim 14, wherein the outer cover portion is made of plastic. 16. The ball wheel assembly of claim 14, wherein the inner mounting portion is made of forged aluminum. 17. The ball wheel assembly of claim 14, wherein the inner mounting portion is a skid. 18. The ball wheel assembly of claim 1, the top housing comprising a housing ball bearing retaining ring, and housing ball bearings, wherein the housing ball bearing retaining ring and housing ball bearings are positioned between the top housing cover and the wheel ball. 19. The ball wheel assembly of claim 1, wherein the top house is secured to the legs with fasteners through the top housing cover and the mounting portions. 20. The ball wheel assembly of claim 1, wherein the largest clearance between the ground and a portion of the leg cover nearest the ground when the wheel ball is in contact with the ground is between about ⅜ inches and ¾ inches. 21. The ball wheel assembly of claim 1, wherein at least one leg cover flares out from the mounting portion. 22. The ball wheel assembly of claim 21, wherein the at least one leg cover flares out about 20 degrees from a line perpendicular to the top housing. 23. A piece of luggage comprising: a luggage body, andtwo ball wheel assemblies, each ball wheel assembly comprising: a wheel ball;first and second legs comprising: a leg housing having a mounting portion and a ring-shaped leg cover, wherein the legs are secured together proximate to the mounting portions,a leg ball bearing retaining ring and leg ball bearings, wherein the leg ball bearing retaining ring and leg ball bearings are positioned between the leg cover and the wheel ball, wherein the leg cover has an inner circumference defining an inner diameter and an outer circumference defining an outer diameter, and wherein the leg cover has an inner surface, the inner surface being concave relative to the wheel ball; anda top housing comprising: a top housing cover secured to the legs,wherein the two ball wheels are positioned on a surface of the luggage body along a first side. 24. The piece of luggage of claim 23, further comprising two feet positioned along a second side opposite the first side. 25. The piece of luggage of claim 23, further comprising two further ball wheel assemblies positioned along a second side opposite the first side.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.