1957- Powerhold patents the first thru-hole pneumatic chuck and collet actuator for lathes.
1958- Louis Gamet of Paris, France patents in the US, the first thru-hole hydraulic chuck actuator.
1959- Powerhold introduces the first thru-hole chucking system for both bar and chuck work.
1963- Gamet patents the distribution of hydraulic oil through the machine headstock bearings to a self-contained chuck.
1966- Gamet patents first 2+2 power chuck which is two 2-jaw chucks in one chuck body allowing each pair of 2-jaws to operate independently of each other.
1969- Powerhold produces the first power chuck system for clamping oil well pipe at both the front and back ends of the machine tool spindle.
1974- Gamet introduces high-speed, thru-hole counterweighted chucks for first and second operations.
1975- Powerhold introduces an inexpensive jaw force analysis gauge for dynamic testing of jaw forces.
1979- Gamet introduces a complete range of ultra high-speed hydraulic chuck actuators with standard accessories such as stroke control, coolant collectors and safety check valves.
1980- Powerhold introduces large hole, ultra high-speed chucks up to 10" diameter featuring .0005" accuracies and maximum jaw force loss of 30%.
1984- Powerhold becomes the licensed manufacturer of RINGSPANN Workholding in North America, a provider of precision mandrels and chucks.
1985- Powerhold designs and builds a 5.5" diameter 3-jaw power chuck to operate at 10,000 RPM.
1986- Powerhold designs and installs the first automatic offset chuck featuring a 6" diameter, 3-jaw chuck with automatic offset of up to .300" and automatic balance compensations.
1988- Powerhold designs and installs precision gear chucks with positive pullback and counterweights for high speed.
1990- Powerhold receives patent on new universal spindle liner which eliminates the need for several spindle liners for bar feed applications.
1991- Powerhold receives patent on air-operated actuator with force multiplier, which can duplicate hydraulics at low air pressure.
1992- Gamet introduces first high/low chucking system, utilizing the "Delta" chuck.
1993- Powerhold produces first prototype of dead length 5C collet chuck which uses the pulling force of a draw tube to push.
1996- Powerhold President Richard Spooner named Chairman of TC-11 Committee of Chucks and Chuck Jaws U.S. Standards.
1997- Powerhold develops a tool free adjustment for draw tubes on 5C collet actuator.
1998- Powerhold designs and builds a bar feed within the machine tool draw tube with multiple stop positions.
2000- Powerhold President and C.E.O., Richard Spooner, named Chairman of the Association of Manufacturing Technology's Workholding Product Group .