GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 157 117 910 patent documents

This week's update (12/07/2024 12:00 CET):

139 301 new documents added

1 340 825 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 0462821 A2 19911227 - Swivel assembly for a pneumatic underground piercing tool.

Title (en)

Swivel assembly for a pneumatic underground piercing tool.

Title (de)

Drehverbindung für eine unterirdische pneumatische Bohrvorrichtung.

Title (fr)

Joint à pivot pour un outil de forage pneumatique souterrain.

Publication

EP 0462821 A2 19911227 (EN)

Application

EP 91305550 A 19910619

Priority

US 54105490 A 19900620

Abstract (en)

A swivel assembly for supporting a valve sleeve in a cavity of a striker in a pneumatic underground piercing tool. A valve supporting means supports the valve sleeve on a valve body by cooperating spherical seat and bearing members to allow angular movement between the valve sleeve and valve body. A retaining mechanism is provided for resiliently securing the valve supporting means to the valve body. <IMAGE>

IPC 1-7

E21B 4/14; E21B 7/26

IPC 8 full level

E21B 4/14 (2006.01)

CPC (source: EP)

E21B 4/145 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0462821 A2 19911227; EP 0462821 A3 19930127

DOCDB simple family (application)

EP 91305550 A 19910619