Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Retraction system for a latching mechanism of a tool










Image Number 10 for United States Patent #6059053.

A retraction system allows disengagement of retrieval latch dogs of a down hole running tool from a bit locking sleeve. The locking sleeve is slidably retained within a drive sub and includes a pair of slots which are engaged by the retrieval latch dogs when the tool is used to retrieve bit segments from the drive sub. The retraction system includes a sleeve which is slidably mounted on a main body of the tool and spring which is biased to push the sleeve over the retrieval latch dogs. The sleeve has a pair of diametrically opposed slots through which the retrieval latch dogs can extend for contacting the inner surface of the drive sub. The retraction system also includes a length of the inner surface of the drive sub which is made of progressively reducing diameter in the direction of retraction of the tool from the drive sub. The upper end of each slot is provided with a bevel for directing the retrieval latch dogs in the inward direction. To withdraw the tool from the drive sub, the retrieval latch dogs are disengaged from the bit locking sleeve by the combined action of the shape of surface portion which acts to push the retrieval latch dogs inwardly, together with the force of spring and the beveled surfaces which act to push the sleeve over the retrieval latch dogs thereby disengaging it from the bit locking sleeve.








 
 
  Recently Added Patents
Integrated circuit packaging system with an encapsulation and method of manufacture thereof
Automobile body
Supplier capability methods, systems, and apparatuses for extended commerce
Crystalline form of (R)-7-chloro-N-(quinuclidin-3-yl)benzo[b]thiophene-2-carboxamide hydrochloride monohydrate
Using location based services for determining a calling window
System and method for the analysis of biodiesel
Vehicle, toy, and/or replicas thereof
  Randomly Featured Patents
Apparatus and method for sealing foil material
Surgical methods and surgical kits
Protection apparatus for brushless motor
Electrical connector
Taillight
Apparatus and method for renewal-based resource allocation in a broadband wireless access communication system
Machine and process for grinding granular particles
Silver halide color photographic light-sensitive material containing epoxy compound
Systems and methods for normalizing data of heterogeneous data sources
Method of controlling evaporator for salt manufacturing plant