Hydraulic cylinder cushion
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0626735
(2009-11-27)
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등록번호 |
US-8353241
(2013-01-15)
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발명자
/ 주소 |
- Manney, III, Charles J.
- Anderson, William J.
- Stanczyk, Eric A.
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
7 |
초록
▼
A hydraulic cylinder cushion including a cylinder having a longitudinal axis and an inner chamber, a piston rod having a base, a cushion spear having a spear base, a shaft extending from the spear base, and a spearhead arranged opposite the spear base, the spearhead comprising a hemispherical portio
A hydraulic cylinder cushion including a cylinder having a longitudinal axis and an inner chamber, a piston rod having a base, a cushion spear having a spear base, a shaft extending from the spear base, and a spearhead arranged opposite the spear base, the spearhead comprising a hemispherical portion connected to the shaft, wherein the hemispherical portion is diametrically larger than the shaft, and an end cap having a bore, wherein the end cap is secured to a first end of the cylinder such that the bore faces the inner chamber and is substantially aligned with the longitudinal axis, the piston rod is slidingly arranged within the inner chamber along the longitudinal axis such that the base faces the end cap, the cushion spear is pivotably secured to the base of the piston rod and extends toward the bore, and the bore is adapted to receive the cushion spear therein.
대표청구항
▼
1. A hydraulic cylinder cushion comprising: a cylinder having a longitudinal axis and an inner chamber;a piston rod having a base;a cushion spear having a spear base, a shaft extending from the spear base, and a spearhead arranged opposite the spear base, the spearhead comprising a substantially hem
1. A hydraulic cylinder cushion comprising: a cylinder having a longitudinal axis and an inner chamber;a piston rod having a base;a cushion spear having a spear base, a shaft extending from the spear base, and a spearhead arranged opposite the spear base, the spearhead comprising a substantially hemispherical portion connected to the shaft, wherein the hemispherical portion is diametrically larger than the shaft; and,an end cap having a bore and a fluid port, the bore and the fluid port being in fluid communication, wherein the end cap is secured to a first end of the cylinder such that the bore faces the inner chamber and is substantially aligned with the longitudinal axis, the piston rod is slidingly arranged within the inner chamber along the longitudinal axis such that the base faces the end cap, the cushion spear is pivotably secured to the piston rod and extends toward the bore, and the bore is adapted to receive the cushion spear therein. 2. The hydraulic cylinder cushion recited in claim 1 wherein the cushion spear is adapted to pivot toward the longitudinal axis when the piston rod is radially shifted relative to the longitudinal axis. 3. The hydraulic cylinder cushion recited in claim 1 wherein the spearhead and bore define an annular gap when the spearhead enters the bore. 4. The hydraulic cylinder cushion recited in claim 1 wherein the spearhead includes a frustoconical tip. 5. The hydraulic cylinder cushion recited in claim 1 wherein the piston rod includes a counter-bore arranged in the base and adapted to receive the spear base, and a collar arranged to secure the spear base within the counter-bore. 6. The hydraulic cylinder cushion recited in claim 5 wherein the counter-bore and the collar are threadingly engageable. 7. The hydraulic cylinder cushion recited in claim 1 wherein the bore is tapered. 8. The hydraulic cylinder cushion recited in claim 7 wherein the spearhead and bore define an annular gap when the spearhead enters the bore, and the annular gap becomes progressively smaller when the cushion spear is pushed into the bore. 9. The hydraulic cylinder cushion recited in claim 1 wherein the piston rod includes a piston attached to the base, and the cushion spear is pivotably connected to the piston. 10. A cushion spear having a spear base, a shaft extending from the spear base, and a spearhead arranged opposite the spear base, the spearhead comprising a substantially hemispherical portion connected to the shaft, wherein the hemispherical portion is diametrically larger than the shaft. 11. The cushion spear recited in claim 10 wherein the spearhead comprises a frustoconical tip. 12. The cushion spear recited in claim 10 wherein the spear base is diametrically larger than the shaft. 13. The cushion spear recited in claim 10 wherein the spear base includes a convex back surface.
이 특허에 인용된 특허 (7)
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Rich Beldon Lee (Northbrook IL) Lansky Zdenek J. (Solon OH), Cushioning means for hydraulic cylinder.
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Propsting John R. (Greenwich AUX) Higgins George D. (Beverly Hills AUX), Device for operation of a sliding door member.
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Kolchinsky Abel E. (Glenview IL) Bowbin John F. (Elmhurst IL) Davis Wayne M. (Lake Zurich IL 4), Expandable cushion plunger for piston and cylinder devices.
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Mitsuhiro Yoshimoto JP; Tomohiko Yasuoka JP; Akinori Ro JP, Hydraulic cylinder.
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Horiuchi George H. (Kingsburg CA) Wynn Edward J. (Leola PA), Hydraulic cylinder cushion device.
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Czukkermann John S. (Dunedin FL), Piston with cushioning spear having exhaust ports therein.
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Endo Hisashi (Kawasaki JPX), Stroke cushioning apparatus for hydraulic cylinders.
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