This inventor holds 14 USPTO granted patents and 1 published patent application, plus 2 CIPO patents and 10 EPO patents. Top assignees: Mincon International Limited, Minroc Technical Promotions Limited. Active years: 2001-2026.
Location History:
- Co. Clare, IE (2001)
- County Clare, IE (2011)
- Clare, IE (2015)
- Ennis, IE (2010 - 2023)
Company Filing History:
10 out of 17 
4 out of 7 Years Active: 2001-2026
Title: Innovations by Joseph Purcell: A Pioneer in Drill Bit Technology
Introduction
Joseph Purcell is an accomplished inventor based in Ennis, Ireland, known for his significant contributions to the field of drill bit technology. With a total of 13 patents to his name, Purcell has developed innovative solutions that enhance the efficiency and functionality of fluid-operated percussion drill tools.
Latest Patents
Among his latest patents, Purcell has designed a drill bit assembly specifically for fluid-operated percussion drill tools. This assembly features a percussion bit with a head portion that includes an axially extending shank. The design incorporates a first plurality of axially extending splines on the shank, which slideably engage with complementary splines in a drive chuck. This mechanism allows for the effective transmission of rotational drive from the chuck to the shank. Additionally, the assembly includes engagement means on the chuck that connect it to the drive means of the drill tool. The innovative design allows the bit to be moved axially relative to the chuck, facilitating easy removal while maintaining full engagement with the drive means.
Another notable patent by Purcell is also a drill bit assembly for fluid-operated percussion drill tools. This invention comprises a percussion bit with a head portion and a bit retaining portion. The assembly features engagement means on the head portion that work with complementary engagement means on a drive ring, enabling the transmission of rotational drive to the percussion bit. The design includes separable part-annular