Patent ID: 7647862
Filing Date: 2010-01-19
Classification: B28B,F15B,Y10T

Abstract:
1. A dual-acting linear actuator comprising: a hollow body; a sleeve configured to selectively couple about an outside surface of the hollow body; and a stationary hollow rod having a first rod segment separated from a second rod segment by a separator plate, the stationary hollow rod extending through the hollow body such that the separator plate forms a first chamber and a second chamber within the hollow body, wherein the first rod segment is configured to transmit a power medium to the first chamber to cause the hollow body, together with the sleeve, to move along the stationary hollow rod toward the first rod segment and the second rod segment is configured to transmit the power medium to the second chamber to cause the hollow body, together with the sleeve, to move along the stationary hollow rod toward the second rod segment.