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US 7,921,940 B2Granted
Casing hammer power swing-out apparatus for drilling rig
OwnerVaughn Anderson, Ken Andersoninventors
Life of this patent
Estimating the term…
Abstract
A swing-out apparatus for a drill rig, typically for drilling water wells. It includes a sled which is formed to be driven vertically on a drill mast of a vehicle carrying the sled, a casing hammer, and a hinge securing the casing hammer on the sled. To provide for displacement of the casing hammer relative to the sled, a drive is provided for swinging the casing hammer on the hinge from a deployed position to an inactive position. The drive comprises a motor connected for driving one relative to another.
Claims8
In a swing-out apparatus for a drill rig, the swing-out apparatus including
- a. a sled formed to be driven vertically on a drill mast,
- b. a casing hammer carried by said sled, and
- c. a hinge securing said casing hammer on said sled,
- the improvement comprising
- d. a drive for swinging said casing hammer on said hinge from a deployed position to an inactive position, and
- e. said hinge comprising a first pivot member secured to said sled and a second pivot member connected to said casing hammer, said pivot members being connected at a joint axis, and said drive comprises a motor mounted on said second pivot member and drivingly connected to a sprocket at said joint axis.
3 more elements
A swing-out apparatus for a drill rig, comprising
- a. a sled formed to be driven vertically on a drill mast,
- b. a casing hammer pivotally secured to said sled, and
- c. a drive for swinging said casing hammer from a deployed position to an inactive position, and
- d a hinge securing said casing hammer on said sled, said hinge comprising a first pivot member secured to said sled and a second pivot member connected to said casing hammer, said pivot members being connected at a joint axis, and said drive comprises a motor mounted on said second pivot member and drivingly connected to a sprocket at said joint axis.
1 more element
Dependencies are inferred from the claim text.