1
Allan T Fisk: Guided mole. Foster Miller, Fish & Richardson, June 21, 1994: US05322391 (19 worldwide citation)

Boring apparatus for forming a generally horizontal underground passage in soil for a utility conduit or the like that includes a tool head with a base portion and a nose portion mounted on the base portion. The nose portion is rotatable relative to the base portion between a first position in which ...


2
Allan T Fisk: Guided mole. Foster Miller, Fish & Richardson P C, January 28, 1997: US05597046 (12 worldwide citation)

Moling apparatus for forming a generally horizontal underground passage in soil for a utility conduit or the like includes tool head structure with a base portion and a nose portion mounted on the base portion such that an interface region is formed between nose portion and base portion surfaces. Th ...


3
Allan T Fisk, David I Freed, Thomas H Mann: Guided mole. Foster Miller, Fish & Richardson, September 27, 1994: US05350254 (8 worldwide citation)

Boring apparatus for forming a generally horizontal underground passage in soil for a utility conduit or the like that includes a tool head with a base portion and a nose portion mounted on the base portion. The base portion is rotatable relative to the nose portion between a first position in which ...


4
Fisk Allan T: Guided mole. Foster Miller, ERTMAN Willis M, March 17, 1994: WO/1994/005941 (1 worldwide citation)

Boring apparatus for forming a generally horizontal underground passage (10) in soil for a utility conduit or the like that includes a tool head (24) with a base portion (26) and a nose portion (28) mounted on the base portion. The nose portion (28) is rotatable relative to the base portion between ...


5
Fisk Allan T: Guided mole.. Foster Miller, June 14, 1995: EP0657006-A1

Boring apparatus for forming a generally horizontal underground passage (10) in soil for a utility conduit or the like that includes a tool head (24) with a base portion (26) and a nose portion (28) mounted on the base portion. The nose portion (28) is rotatable relative to the base portion between ...


6
Fisk Allan T, Freed David I, Mann Thomas H: Improved guided mole. Foster Miller, September 4, 1996: EP0729555-A1

Boring apparatus for forming a generally horizontal underground passage in soil for a utility conduit or the like that includes a tool head with a base portion and a nose portion mounted on the base portion. The base portion is rotatable relative to the nose portion between a first position in which ...


7
Fisk Allan T, Freed David I, Mann Thomas H: Improved guided mole. Foster Miller, sBOOTH William E, June 1, 1995: WO/1995/014878

Boring apparatus for forming a generally horizontal underground passage (10) in soil for a utility conduit or the like that includes a tool head (24) with a base portion (26) and a nose portion (28) mounted on the base portion. The base portion is rotatable relative to the nose portion between a fir ...