Quotables
"Without question, the greatest invention in the history of mankind is beer. Oh, I grant you that the wheel was also a fine invention, but the wheel does not go nearly as well with pizza."
Dave Barry
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6892834 | Piloted drill barrel and method of using same A hard rock drill barrel has a barrel portion with a downhole hammer drill disposed therein at the barrel's periphery. A pilot portion, in substantial axial alignment with the barrel but having a smaller diameter, extends distally from the barrel for inserting into ... | 05/17/2005 |
| 5174390 | Modular cluster drill apparatus A cluster drill includes a first plate portion and a second plate portion. The first plate portion extends parallel to the second plate portion and is rigidly affixed to the second plate portion. At least one first and second plate aperture is formed in t... | 12/29/1992 |
| 5032039 | Underground excavator An underground excavator includes a chamber defined in the forward section of an excavator body for receiving excavated material such as soil, sand, gravel, clay and their mixtures. A rotary cutter is mounted to the forward end of a rotary shaft for penet... | 07/16/1991 |
| 4478296 | Drill bit having multiple drill rod impact members A drill bit for drilling a subterranean bore hole which includes a housing having a cap plate adapted for connection to a drill pipe and a base block axially aligned with and spaced from the cap plate by guide members. A plurality of elongated drill rod i... | 10/23/1984 |
| 4410053 | Apparatus for drilling hard material A method for drilling hard material such as rock by fragmenting the rock by impact in selected spaced-apart areas and simultaneously fragmenting the rock by shear between the selected areas. The invention also covers a drill head with particularly arrange... | 10/18/1983 |
| 4278136 | Sinkerdrill A down-the-hole rock drill including a drill bit provided at the lower end of a drill rod, which is rotatably driven by an above-the-ground motor. To increase the drilling efficiency and facilitate drilling of large-diameter holes a machine casing is posi... | 07/14/1981 |
| 4247149 | Mechanically actuated impact mechanism An impact mechanism for rock breaking, pile driving and pile extracting, and the like, includes a head assembly (18) with a pair of shank members (24,26) movably mounted thereto and flywheel (76,78) and eccentric crankshaft parts (74) rotated by a motor (... | 01/27/1981 |
| 4165130 | Impact tunneling machine with cutters spaced for equal work A tunneling machine provided with the plurality of impact type cutting tools adapted to be mounted on a rotatable or oscillatable workhead assembly in such order and number that the work done by each of said tools upon angular movement of the workhead is ... | 08/21/1979 |
| 4052107 | Hydraulic hammers hydraulically driven impactor The disclosure concerns a hydraulically driven impactor in which the operng cycle of a reciprocating piston is determined by the retraction velocity and displacement of the piston itself. Energy is conserved and heat dissipation minimised by the utilizat... | 10/04/1977 |
| 4013319 | Tunneling machine with massive guide for impact tools A tunneling machine is described which uses an array of impact tools for cutting a deep kerf that defines the wall of the tunnel. The impact tool provides impact blows through drill steels to which drill bits are attached. A substantial portion of the dri... | 03/22/1977 |
| 3981540 | Rock breaking apparatus An apparatus for breaking and cutting rock and similar materials is provided with one or more roller cutter constructions, each comprising an annular cutter rotatably mounted in a housing. Impact forces are applied directly to the cutter intermittently wi... | 09/21/1976 |
