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Class 173/55 - Contact moves grips out of shaft engagement


Subclass of Class 173 - Tool driving or impacting
Definition: Apparatus in which cyclic engagement of the grasp means
No. of patents: 15
Last issue date: 09/23/2008


NumberTitleIssue Date
7426966Apparatus for imparting relative movement between an oscillating member and a rail
The invention provides an apparatus (2) for imparting relative movement between an oscillating member and a rail (4). The apparatus (2) comprises a support (6) in the form of a housing providing a fulcrum (8) and biasing means (...
09/23/2008
7100697Method and apparatus for reforming tubular connections
The present invention generally relates to methods and apparatus for connecting tubulars and reforming the connection between the tubulars. In one aspect of the invention, the tubulars are aligned, connected, and then reformed at the connection. In one embodiment, t...
09/05/2006
7073598Apparatus and methods for tubular makeup interlock
The present invention provides for an apparatus and methods to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. Additionally, the apparatus and methods can be used to for running in casing, run...
07/11/2006
7021374Method and apparatus for connecting tubulars using a top drive
An apparatus for facilitating the connection of tubulars, said apparatus comprising a winch (15), at least one wire line (4, 5), and a device (2) for gripping the tubular (3), the arrangement being such that, in use, the winch (15)...
04/04/2006
6913096Top drive well drilling apparatus
A top drive well drilling apparatus includes a body with means for suspending the body from a drilling rig. A motor is secured to the body. The motor has a central passage defining a rotational axis. The central passage is adapted to receive a tubular drive shaft. A...
07/05/2005
6578643Pneumatic ratchet drive wrench
A pneumatic ratchet drive wrench of the present invention includes a pair of single springs that each bias a corresponding pawl into engagement with an output member and inhibit counter-rotation of the output member opposite the corresponding pawl. The pa...
06/17/2003
6481930Apparatus and method for inserting and removing a flexible first material into a second material
An apparatus for inserting and removing a flexible first material into a second material (20) includes a moveable carriage (22). An adjustable clamp (24) is connected to the moveable carriage (22), adjustable between an open position and a clamped positio...
11/19/2002
6227306Pipe gripping device
A pipe gripping device is taught which is useful for moving pipe into and/or out of a well. The pipe gripping device includes a first set of slips for holding a pipe in a pipe light condition and a second set of slips for holding a pipe in a pipe heavy co...
05/08/2001
6199641Pipe gripping device
A pipe gripping device is taught which is useful for moving pipe into and/or out of a well. The pipe gripping device includes a first set of slips for holding a pipe in a pipe light condition and a second set of slips for holding a pipe in a pipe heavy co...
03/13/2001
5167288Rod driving tool
A tool comprising a temporary attachment to a rod being driven into the ground. The tool has jaws to grip the rod and has a pressure or impact receiving surface so a kelly bar may be brought to bear on the attachment. The jaws hold the rod coaxially with ...
12/01/1992
4776407Clamping attachment to a device for driving rod elements of low rigidity into the ground
A clamping attachment to a device for driving elongated rod elements of low igidity into the ground comprises a housing (1) having a through tapered interior (2) and shoulders (7) on the outer surface. The interior (2) of the housing accommodates two sprin...
10/11/1988
4759412Rock breaking device
A rock breaking device adapted to be coupled to the lifting arms of a tractor or similar vehicle is disclosed, the device having an upstanding guide tube with a hammer, chisel, and anvil disposed therein. The hammer can be raised within the guide tube by ...
07/26/1988
4558747Impact devices
A pair of rotating flywheels which engage a ram for moving a tool which impacts a part, such as a nail to be driven, are rotated in opposite directions from a single motor or other rotating means, through a pair of substantially identical gears, one of wh...
12/17/1985
4487273Gripping tool adapted for use with device for driving rod-shaped elements into and out of the ground
A distinguishing feature of the present invention comprising a shell with side ports and an axial taper through cavity whose generatrix is inclined to the shell center line at an angle of less than the self-wedging angle, spring-biased gripping jaws accom...
12/11/1984
4205727Clamping means for a device for driving flexible rod-shaped elements in soil
The invention contemplates a clamping means for a device for driving flexible rod-shaped elements in soil, wherein an open-ended tapered inner space of the casing accommodates at least two wedging elements and a spring urging the wedging elements into the...
06/03/1980
 
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