Weld cylinder
AssigneeSMC Corporation of America
InventorBradley Allen Weedon
Life of this patent
Estimating the term…
Abstract
According to the present disclosure, a fluid cylinder is provided that is configured to move an object between first and second positions. The fluid cylinder includes a cylinder housing and a shaft configured to move between extended and retracted positions relative to the cylinder housing. Preferably, the fluid cylinder includes a scraper positioned to contact an outer surface of the shaft to remove contaminants therefrom during movement of the shaft. Furthermore, the preferred fluid cylinder includes an anti-rotation mechanism positioned to prevent rotation of the shaft.
Claims55
A fluid cylinder configured to move an object between first and second positions, the fluid cylinder comprising
- a cylinder housing,
- a shaft configured to move between extended and retracted positions relative to the cylinder housing, the shaft including a central axis and an outer surface,
- a piston configured to move the shaft between the extended and retracted positions,
- a scraper positioned to contact the outer surface of the shaft to remove contaminants therefrom during movement of the shaft, and
- an anti-rotation mechanism positioned to prevent rotation of the shaft about the central axis.
A fluid cylinder configured to move an object between first and second positions, the fluid cylinder comprising
- a cylinder housing,
- a shaft configured to move between extended and retracted positions relative to the cylinder housing, the shaft including a central axis and an outer surface,
- an actuation piston configured to move the shaft between the extended and retracted positions, the piston including at least two actuation piston heads and a rod positioned to couple the actuation piston heads together, and
- a scraper positioned to contact the outer surface of the shaft to remove contaminants therefrom during movement of the shaft.
A fluid cylinder configured to move an object between first and second positions, the fluid cylinder comprising
- a cylinder housing including a cylinder body having a first end and a second end spaced apart from the first end and a closure coupled to the first end of the cylinder body,
- a shaft positioned to extend through the closure of the cylinder housing and move between extended and retracted positions relative to the cylinder housing, the shaft having a central axis,
- a piston configured to move the shaft between the extended and retracted positions, and
- an anti-rotation mechanism configured to prevent rotation of the shaft about the central axis, the anti-rotation mechanism being spaced apart from the closure and coaxial with the central axis of the shaft.
A fluid cylinder configured to move an object between first and second positions, the fluid cylinder comprising
- a cylinder housing,
- a shaft positioned to move between extended and retracted positions relative to the cylinder housing,
- an actuation piston positioned in the housing and configured to move the shaft between the extended and retracted positions, the actuation piston including a hollow rod and an actuation piston head coupled to the hollow rod, and
- a stationary piston coupled to the housing, the stationary piston including a stationary piston head positioned in the hollow rod, the actuation piston head and stationary piston head cooperating to define a space therebetween, the hollow rod including an aperture permitting communication of fluid through the hollow rod with the space defined between the actuation and stationary piston heads.
A fluid cylinder configured to move an object between first and second positions, the fluid cylinder comprising
- a cylinder housing,
- a shaft positioned to move between extended and retracted positions relative to the cylinder housing,
- an actuation piston positioned in the housing and configured to move the shaft between the extended and retracted positions, the actuation piston including a hollow rod, a first actuation piston head coupled to the hollow rod, and a second actuation piston head coupled to the hollow rod, the first actuation piston head being spaced apart from the second actuation piston head, and
- a stationary piston coupled to the housing and including a first stationary piston head positioned in the hollow rod between the first and second actuation piston heads, and a second stationary piston head positioned in the hollow rod and spaced apart from the first stationary piston head.
A fluid cylinder configured to move an object between first and second positions, the fluid cylinder comprising
- a cylinder housing including a first end and a second end spaced apart from the first end,
- a shaft positioned to move between extended and retracted positions relative to the cylinder housing,
- an actuation piston positioned in the housing and configured to move the shaft between the extended and retracted positions, the actuation piston including a hollow rod and an actuation piston head coupled to the hollow rod, the hollow rod having first and second ends positioned between the first and second ends of the cylinder housing when the shaft is in the extended position, and
- a stationary piston coupled to the housing and including a stationary piston head positioned in the hollow rod.
A fluid cylinder configured to move an object between first and second positions, the fluid cylinder comprising
- a cylinder housing,
- a shaft positioned to move between extended and retracted positions relative to the cylinder housing,
- an actuation piston positioned in the housing and configured to move the shaft between the extended and retracted positions, the actuation piston including a hollow rod and an actuation piston head coupled to the hollow rod,
- a stationary piston coupled to the housing and including a stationary piston head positioned in the hollow rod, and
- an anti-rotation mechanism positioned in the hollow rod.
A fluid cylinder for use with a fixture, the fluid cylinder comprising
- a cylinder housing including a cylinder body and a cylinder body mount having a closure portion configured to close an end of the cylinder body and a mount portion configured to mount to the fixture, the closure portion being coupled to the mount portion, the cylinder housing further including means for coupling the cylinder body mount to the cylinder body without heating the cylinder body,
- a shaft positioned to move between extended and retracted positions relative to the cylinder housing, and
- a piston configured to move the shaft between the extended and retracted positions.
Dependencies are inferred from the claim text.