U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5421089

Fork With Timer

A fork with timer for providing a cue to a user after an elapsed period of time for indicating that another bite of food using the fork may be taken.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 175/3.5 - Explosive charge carried by projectile


Subclass of Class 175 - Boring or penetrating the earth
Definition: Subject matter in which a projectile containing an explosive
No. of patents: 5
Last issue date: 03/01/2011


NumberTitleIssue Date
7896104Device and method for explosive drilling
The invention relates to a device and a method for explosive drilling. Explosive capsules are fired by a firing device at a material to be stripped. A high degree of safety is attained in that use is made of an explosive with liquid oxygen that is only produced imme...
03/01/2011
6978848Method and apparatus for penetrating subsurface formations
A method and apparatus for driving at least one explosive driven projectile into an open hole or well bore of a subterranean formation for the purpose of stimulating productive formation. The apparatus is capable of pivoting within the open hole or well bore for des...
12/27/2005
5540293Firing Head
An explosive or combustion actuated subsurface well tool includes a firing head for initiating operation of the tool in response to a projectile, such as a ball or go-devil, being pumped down a tubing string extending from the surface. The firing head inc...
07/30/1996
4889183Method and apparatus for retaining shaped charges
The invention provides a perforating assembly and a method and apparatus for retaining shaped charges in a charge carrier. A shaped charge body has two clips associated with it: a band clip having a plurality of radially extending tabs oppositely oriented...
12/26/1989
4088368Method for explosive breaking of hard compact material
A hard compact material, such as rock, is broken by delivering an explosive into at least one hole which has been pre-drilled in the material to be broken and by forcing a relatively incompressible fluid, such as water, into the hole to impact the explosi...
05/09/1978
 
Sign InRegister
Username  
Password   
forgot password?