IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0497548
(1995-06-30)
|
발명자
/ 주소 |
- Gulley William F. (Monroe LA)
|
출원인 / 주소 |
- Browder
- Kenneth W. (W. Monore LA 14a part interest )
|
인용정보 |
피인용 횟수 :
40 인용 특허 :
5 |
초록
▼
A sling for lifting a heavy work piece (e.g. a pipe section) including a strap of flexible, fabric-like material having first and second, looped strap ends, and first, outer & second, inner strap surfaces. The first, outer strap surface has a plurality of eye-loops also of flexible, fabric-like mate
A sling for lifting a heavy work piece (e.g. a pipe section) including a strap of flexible, fabric-like material having first and second, looped strap ends, and first, outer & second, inner strap surfaces. The first, outer strap surface has a plurality of eye-loops also of flexible, fabric-like material affixed thereto and spaced along the length thereof. The first, looped, strap end is selectively attachable to one of the plurality of eye-loops to form a closed lifting loop. The strap preferably is made of a fabric material of NylonTM. The eye-loops are preferably constructed of the same material as the strap, and are preferably attached to the strap by stitching. Each eye-loop is preferably separated from the first strap end by a distance sufficient to allow each eye-loop to be used in conjunction with the first strap end to form a snug fit about a different, standard-size pipe. An attachment device (e.g. a shackle) is included for selectively attaching the first strap end to an appropriately selected one of the plurality of eye-loops. The second, opposite, looped end, as well as the other spaced, eye-loops, are used, when needed, for attachment or rigging points for, for example, crane hooks, chain hooks, etc. Exemplary riggings techniques are illustrated in FIGS. 6, 8 & 9. Two exemplary embodiments for the sling strap of the system are illustrated in FIGS. 1 & 2 and 6, respectively.
대표청구항
▼
A sling capable of lifting a heavy load and moving the heavy load about in the air while supported by the sling, comprising: a substantially in-elastic, elongated, single strap of flexible, fabric-like material having a first strap end, a second strap end, a first, flat, outer, strap surface, and a
A sling capable of lifting a heavy load and moving the heavy load about in the air while supported by the sling, comprising: a substantially in-elastic, elongated, single strap of flexible, fabric-like material having a first strap end, a second strap end, a first, flat, outer, strap surface, and a second, flat, inner, strap surface co-extensive with said outer, strap surface; said first strap surface having in connection therewith a plurality of in-line eye-loops of flexible, fabric-like material spaced in line along the length of said single, elongated strap, said first strap end being separately selectively attachable to each one of said plurality of eye-loops forming a closed, in-elastic lifting loop capable of looping about, holding and lifting various sized loads, with the effective diameter of said loop being variable to produce a loop having a comparable inner diameter in comparison to the outer periphery of the particular heavy load being lifted.
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