| 发明名称 |
Thermal ratchet system |
| 摘要 |
A thermal ratchet system includes a ratchet housing, a ratchet mandrel, a first ratchet, and a second ratchet. The first ratchet is disposed at a position generally fixed with respect to the ratchet housing and is urgeable with respect to the ratchet mandrel in an axial direction by a change in environmental temperature in a first direction. The second ratchet is disposed at a position generally fixed with respect to the ratchet housing and is urgeable with respect to the ratchet mandrel in the axial direction by a change in environmental temperature in a second direction opposite to the first direction. At least one of the first ratchet and the second ratchet is engaged with the ratchet mandrel. |
| 申请公布号 |
US8794104(B2) |
申请公布日期 |
2014.08.05 |
| 申请号 |
US201113280056 |
申请日期 |
2011.10.24 |
| 申请人 |
Schlumberger Technology Corporation |
发明人 |
Stretch Mitchel |
| 分类号 |
G05G1/00;F03G7/06 |
主分类号 |
G05G1/00 |
| 代理机构 |
|
代理人 |
Davis Daren C.;Kanak Wayne I. |
| 主权项 |
1. A thermal ratchet system, comprising:
a ratchet housing defining a first locking profile and a second locking profile; a ratchet mandrel; a first ratchet defining a locking profile operably associated with the first locking profile of the ratchet housing and disposed at a position generally fixed with respect to the ratchet housing and urgeable with respect to the ratchet mandrel in an axial direction by a change in environmental temperature in a first direction; and a second ratchet defining a locking profile operably associated with the second locking profile of the ratchet housing and disposed at a position generally fixed with respect to the ratchet housing and urgeable with respect to the ratchet mandrel in the axial direction by a change in environmental temperature in a second direction opposite to the first direction; wherein at least one of the first ratchet and the second ratchet is engaged with the ratchet mandrel. |
| 地址 |
Sugar Land TX US |
