IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0729851
(2010-03-23)
|
등록번호 |
US-8240070
(2012-08-14)
|
발명자
/ 주소 |
- Phillips, Paul D.
- Fisher, Jon D.
- Sahm, III, Victor A.
|
출원인 / 주소 |
|
대리인 / 주소 |
Gardere Wynne Sewell, LLP
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
19 |
초록
▼
Molded polymer elevator buckets are reinforced by tapering the thickness of front and sidewalls and integral arcuate corner parts to improve bucket life without significant weight increase or reduced bucket capacity. Front lip wear indicators may be molded into the front wall section delimited by th
Molded polymer elevator buckets are reinforced by tapering the thickness of front and sidewalls and integral arcuate corner parts to improve bucket life without significant weight increase or reduced bucket capacity. Front lip wear indicators may be molded into the front wall section delimited by the lip and/or on the arcuate corner parts.
대표청구항
▼
1. An elevator bucket, comprising: a back wall, a bottom wall, opposed sidewalls and a front wall joined to the opposed sidewalls forming an open top, the front wall joined to the opposed sidewalls by arcuate corner parts, the front wall having a lip extending between the opposed sidewalls;wherein t
1. An elevator bucket, comprising: a back wall, a bottom wall, opposed sidewalls and a front wall joined to the opposed sidewalls forming an open top, the front wall joined to the opposed sidewalls by arcuate corner parts, the front wall having a lip extending between the opposed sidewalls;wherein the thickness of the front wall and the arcuate corner parts is increased and gradually tapers to a lesser thickness from the lip to the back wall to maintain a constant working volume of the elevator bucket; andwherein a single material defines the thickness of the front wall and the arcuate corner parts. 2. The elevator bucket of claim 1, further including wear indicia extending along at least a part of one of said arcuate corner parts and at least a part of said front wall. 3. The elevator bucket of claim 2, wherein said wear indicia comprises at least one ridge. 4. The elevator bucket of claim 2, wherein said wear indicia comprises a groove. 5. The elevator bucket of claim 1, further comprising fastener receiving openings formed on the back wall. 6. The elevator bucket of claim 1, wherein said opposed sidewalls comprise top edges merging with depending arcuate wail edges. 7. The elevator bucket of claim 1, wherein the elevator bucket is formed of, and the single material is, a polymer material. 8. An elevator bucket, comprising: a back wall, a pair of opposed sidewalls and a planar bottom wall forming an upper opening;wherein the planar bottom wall has an increased thickness portion and a tapered thickness portion blending into a reduced thickness from a front lip to the back wall to increase the life of the bucket;wherein the increased thickness portion, the tapered thickness portion, and the planar bottom wall each are formed of the same uniform material; andwherein the bottom wall is joined to the opposed sidewalls by arcuate corner parts, the arcuate corner parts having an increased thickness portion and a tapered thickness portion blending into the reduced thickness. 9. The elevator bucket of claim 8, further including wear indicia extending along at least a part of the bottom wall. 10. The elevator bucket of claim 8, wherein the wear indicia extend along at least portion of at least one of the opposed sidewalls. 11. The elevator bucket of claim 8, wherein the elevator bucket is formed of and the same uniform material is, a polymer material. 12. The elevator bucket of claim 9, wherein the wear indicia comprise a ridge extending at least partially on the bottom wall. 13. The elevator bucket of claim 9, wherein the wear indicia comprise a groove extending at least partially on the bottom wall. 14. A method of manufacturing an elevator bucket, comprising: forming a back wall;forming opposed sidewalls; andforming from a uniform material a planar front wall and an arcuate corner part at a juncture of the planar front wall with one of the opposed sidewalls, the planar front wall and the arcuate corner part each having an increased thickness portion and a tapered thickness portion, blending into a reduced thickness the increased thickness portion of the planar front wall defining a lip. 15. The method of claim 14, further comprising forming wear indicia along at least a portion of the front wall. 16. The method of claim 15, wherein forming the wear indicia comprises forming a groove along at least a portion of the front wall. 17. The elevator bucket of claim 14, wherein the elevator bucket is formed of, and the uniform material is, a polymer material. 18. The elevator bucket of claim 14, further comprising fastener receiving openings formed on the back wall. 19. An elevator bucket, comprising: a single uniform body formed of a single uniform material having portions comprising: a back wall, a pair of opposed sidewalks, and a bottom wall, the bottom wall having a lip portion opposite the back wall;a junction of each sidewall with the lip portion of the bottom wall defining respective arcuate edge portions;wherein the lip portion has an increased thickness tapering toward a lesser nominal wall thickness of the bottom wall; andwherein the arcuate edge portions have the increased thickness portion tapering toward the lesser nominal wall thickness of respective sidewalk.
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