Vulcan was an innovator in pile driving equipment for more than a century. This history can be documented in part by the patents that were issued to Vulcan's people, in addition to those which it acquired externally. We also include patents that were related to Vulcan either because they were issued to a Warrington or they related to a Vulcan product but were never formally assigned to the company. If you see that a patent is missing or incorrect, contact us.

We also have experience in acting as an expert witness in patent disputes; contact us if you are interested.

Formal Patent Title	Application	Inventor(s)	Patent Number (click on nation for patent office that applies) Note: if the patent number is hyperlinked, the patent is on our site and available
			United States	Canada	United Kingdom	France	Germany	Australia	Japan
Steam Pile Driving Hammers	Original Vulcan Hammer Patent	James N. Warrington	378,745	Above: Vulcan #2 Hammer, S/N 463, with the "New Style Patent" number cited on the cylinder. The number is actually in error; it should read 378,745, which is of course the first patent on the list.
Caps for Piles	McDermid Base, for driving wood piles directly	Hugh McDermid	613,385
Pile-Drivers	Sheeting Base	William H. Warrington	777,459
Head-Block	Head Block for Leaders	H.C. Lindsly	S/N 808,665
Caps for Sheet-Piling	"Splined" cap for proper alignment of sheet piling cap	William H. Warrington	960,746
Pile Hammers	California Hammers	James N. Warrington	1,019,386
Pile Hammers	California Hammers	James N. Warrington	1,020,467
Pile Extractors and the Like	Vulcan Pile Extractor	James N. Warrington	1,736,104
Power Hammer	Super Vulcan Differential Acting Hammer	Campbell V. Adams	2,000,908
Power Hammer	Super Vulcan Differential Acting Hammer	Campbell V. Adams	2,004,180
Pile Driving Hammer	Internal Combustion Hammer (IC-65)	Campbell V. Adams	3,013,541		958,688	1,275,714	1,484,582		422,233
Power Hammer	Differential Acting Hammer	Campbell V. Adams	3,096,831
Pulling Adapter	Clamp for Extractor	Campbell V. Adams	3,149,851
Pile Driving Apparatus	Servo-pneumatic hook block, sand drain hammers	Henry G. Warrington	3,171,552
Mandrel for Driving Pile Shells	Expanding Mandrel	Henry G. Warrington	3,329,216
Power Hammer	Vari-Cycle I	Campbell V. Adams and Henry G. Warrington	3,357,315	820,641	1,136,470	1,533,275	1,634,655		639,221
Hydraulic Pile Hammer	Hydraulic Hammer	Campbell V. Adams	S/N 665,525	853,983	1,244,635		1,748,677
Boring Apparatus with Valveless Impactor	Rock Drilling	Henry G. Warrington and George Manning	3,444,937
Pile Driving Hammer	IPH-16 (Internal Pile Hammer)	Henry G. Warrington	3,454,112	908,449	1,271,544	2,010,537	1,928,621	444,891
Percussion Hammer	Slide Bar Gripper	Campbell V. Adams	3,455,208	868,711	1,237,246	1,572,802	1,784,044	439,225	655,568
Piling Extractor	Wood Pile Puller	Wayne de Witt	3,534,996
Percussion Hammer	OPH-80 (Ocean Pile Hammer)	Henry G. Warrington	3,547,207	921,715	1,282,615	2,022,755	1,955,300	444,896
Percussion Hammer	106 Hammer	George C. Wandell	3,566,977					438,549	882,047
Percussion Hammer	DGH Auto-Stop	George C. Wandell	3,645,342	937,834	1,342,798	2,095,760		450,595
Free Piston Power Source	Linear Vibrator	John J. Kupka	3,704,651	952,774	1,362,213	2,117,070		457,844	885,621
Percussion Hammer	DGH Auto-Stop	George C. Wandell	3,782,483
Cushion Pot with Mechanical and Molded Joint	Key Ball Cushion Ring	Henry G. Warrington	3,800,888		1,408,317				900,238
Pile Driving Hammer	Vulcan 3150 and 4150 Offshore Hammers	Henry G. Warrington	3,815,474
Percussion Hammer	Hydra-Nut	Henry G. Warrington	3,938,427
Cable Tensioning Assembly	Hy-Ten Cable Tensioner	Henry G. Warrington	4,015,821
Retaining Assembly	Ram Key Retainer	John A. Lerch	4,295,752
Vibratory Hammer/Extractor	Vulcan 400 and 1400 Vibratory Hammers	Don C. Warrington	4,819,740	1,299,366
Method and Apparatus for Breaking Reinforced Concrete Piles and for Exposing Reinforcing Bars	Concrete Pile Cutter	Pulat A. Abbasov, Valentin E. Abramov, Dmitri A. Trifonov-Yakovlev, Lev V. Erofeev, Gennady S. Kuritsyn, Alexandr P. Borodachev, Victor V. Matvienko, Yuri V. Dmitrevich, Ludmila P. Lukash, Alexandr S. Petrashen, and Valery B. Petrov	4,979,489	Patent Cooperation Treaty PCT/SU/88/00114
Sea Water Pile Hammer	Sea Water Hammer	Don C. Warrington, Vladimir A. Nifontov, Lev V. Erofeev and Dmitri A. Trifonov-Yakovlev	5,662,175	Patent Cooperation Treaty PCT/US/96/12831