| Patents for Chambersburg Engineering Co. |
Patents 16 -
20
of 20
      |
| Number | Date | Patentee | Title | Type |
| 3,142,206 | Jul. 28, 1964 | W.W. Hague, G.A. Householder | Control system for impact device | drop hammers |
| 3,464,315 | Sep. 02, 1969 | H.A. Weyer | Mechanical pneumatic servo control system for high-speed impact devices | drop hammers |
| 3,566,747 | Mar. 02, 1971 | C.W. Frame | Self-regulating expansion type control valve | drop hammers |
| 4,653,300 | Mar. 31, 1987 | C.J. Crout, C.W. Frame, R.N. Harris | Adaptive, self-regulating forging hammer control system | drop hammers |
| 5,715,724 | Feb. 10, 1998 | C.J. Crout, R.N. Harris | Adaptive, self-regulating forging hammer control system | drop hammers |
