Cushion head | Article about cushion head by The Free Dictionary
cushion head, Brit. pile helmet
A cap which covers and protects the head of a pile while it is being driven into the ground by a pile driver.
References in periodicals archive
Tenders are invited for Pneumatic Cylinder Bore 3 1/4 Inch Stroke 5 Inch Rod Dia Equal 1 Inch Cushion Head
Both Ends, Head Trunion Mounting Style.
The FT Air Cushion Head
generates a cushion of air between the film and the head.