- 1976 Massachusetts, USA. Pierre Foret the founder of the 'Foret Systems Inc' invents and manufactures the patented Vacu-U-Torq vacuum indexing clutch brake.
- 1980 Foret grants license to Danfoss A/S, a Danish industrial manufacturer to produce Vacu-U-Torq for European and Japanese markets.
- 1981 Danfoss A/S markets these products under the SRA and SRB names.
- 1989 Foret Systems acquired by Danfoss A/s.
- 1990 RotaStep launched to capture larger share of clutch brake market.
- 1991 LSE acts as UK agent for Danfoss.
- 1992 LSE purchases product line from Danfoss.
- 2007 ATBLS Ltd created.