Drill head assembly

Details Drill head assembly Drill head assembly

1981-05-26

1983-11-22

Reynolds, Wm. Carter

Tool driving or impacting

Hammer or tool shaft reciprocated by gripping means which...

With fixed means cyclically contacted by grip structure

773DIG3, E21C 702

Patent

active

044163371

ABSTRACT:
A drill housing includes an internal cavity for receiving a unitary tubular support member rotatably supported by bearing assemblies in the drill housing. The tubular support member is connected through meshing gears to a drive shaft of a rotary motor mounted externally on the drill housing. An upper end portion of the tubular support member is rotatably supported by a first bearing assembly and is nonrotatably connected to a drill retaining member that extends into a central bore of the tubular support member. The drill retaining member has a socket for receiving the shank of a drill steel. A lower end portion of the tubular support member is rotatably supported by a second bearing assembly. An enlarged intermediate body portion of the support member separates the upper and lower end portions and supports the first and second bearing asemblies. The lateral thrust of the drill steel is applied to the enlarged intermediate body portion and thereby removed from the bearing assemblies to reduce wear of the bearing assemblies. A carrier member is positioned in an annular space between the tubular support member lower end portion and the drill housing. The carrier member supports a plurality of overlying O-ring seal members in surrounding relation with the tubular support member to prevent loss of lubricant from the second bearing assembly and the entrance of rock cuttings and dust into the drill housing.

REFERENCES:
patent: 2365810 (1944-12-01), Faso
patent: 3190369 (1965-06-01), Pyles
patent: 3461974 (1969-08-01), Bartos
patent: 3544121 (1970-12-01), Mizoguchi
patent: 3547206 (1970-12-01), Phillips
patent: 3654961 (1972-04-01), Phillips
patent: 3685593 (1972-08-01), Amtsberg et al.
patent: 3766991 (1973-10-01), Brown
patent: 3800887 (1974-04-01), West
patent: 3901330 (1975-08-01), Slator et al.
patent: 4024923 (1977-05-01), Broadbent
patent: 4190116 (1980-02-01), O'Neal et al.
patent: 4294317 (1981-10-01), Amoroso
Drawing No. 4-010468, 1/73, Entitled "Dooley Impact Drill Box Gear Case", Lee-Norse Company, Taylorville, Ill.
Drawing, No. 51822, 11/72, Entitled "Universal Drillhead", J. H. Fletcher & Co., Huntington, W. Va.
Drawing No. 51874, 12/77 Entitled "Drillhead Assembly," J. H. Fletcher & Co., Huntington, W. Va.
Drawing No. 308D9, 7/77, Entitled "Deep Socket Drill Pot", FMC Mining Equipment, Fairmount, West Virginia.
Drawing No. 5308D9, 6/77, Entitled "Deep Socket Drill Pot Layout", FMC Mining Equipment, Fairmount, West Virginia.

Affiliated with

Also associated with

Rating

Drill head assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drill head assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill head assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1810863