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Class Information
Number: 173/29
Name: Tool driving or impacting > Convertible
Description: Apparatus in which means are provided to perform a tool drive function and a tool drive function in a different manner or a function other than tool driving after (1) removal of a significant portion of the apparatus (2) installation of additional parts or (3) substantial rearrangement of existing parts.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
4867249 Driving and setting tool Sep. 19, 1989
4817734 Submergible electrohydraulic drive unit for ramming and working devices to be used under water Apr. 4, 1989
4790045 Power wallpaper removal adapter for jigsaws Dec. 13, 1988
4727941 Power operated reciprocating hand tool Mar. 1, 1988
4646852 Pneumatic mallet Mar. 3, 1987
4585080 Portable rotary earth drilling apparatus Apr. 29, 1986
4544040 Apparatus for driving an elongated piece into and/or out of the ground Oct. 1, 1985
4497376 Interchangeable ram diesel pile Feb. 5, 1985
4494615 Jarring tool Jan. 22, 1985
4489792 Hammer drill adapter Dec. 25, 1984
4487271 Portable core drill Dec. 11, 1984
4485570 Apparatus for mounting a drilling machine on an excavator bucket Dec. 4, 1984
4450919 Drill attachment May. 29, 1984
4448246 Apparatus for setting casing in an oil well May. 15, 1984
4446930 Drill steel removal attachment for rock drilling machine May. 8, 1984
4418767 Interchangeable valve system for hydraulic reversal of positive feed drill Dec. 6, 1983
4417628 Earth boring apparatus Nov. 29, 1983
4405020 Automatic drive hammer system Sep. 20, 1983
4378054 Taphole opening apparatus for blast furnaces Mar. 29, 1983
4331883 Portable power supply unit May. 25, 1982
4327506 Gear case for a suction cutter dredger May. 4, 1982
4296821 Drilling rig and conversion apparatus Oct. 27, 1981
4278135 Variable volume pneumatic drill Jul. 14, 1981
4261400 Hydraulically powered attachment for a tractor Apr. 14, 1981
4199285 Machining unit having adjustable cutter spindle Apr. 22, 1980
4199033 Augering accessory for backhoe or the like Apr. 22, 1980
4182000 Scraper attachment for oscillating vibrator sanders Jan. 8, 1980
4173828 Interchangeable tool operating apparatus with plural motion Nov. 13, 1979
4171083 Drilling and driving device Oct. 16, 1979
4158520 Rock bolting apparatus Jun. 19, 1979
4155409 Rod puller for rock drill May. 22, 1979
4133582 Low profile mining machine Jan. 9, 1979
4114699 Pneumatic rotary hammer device Sep. 19, 1978
4111060 Drill attachment for converting rotary motion to reciprocatory motion Sep. 5, 1978
4082475 High speed reamer attachment for coaxial drive fastener gun Apr. 4, 1978
4072042 Automatic metal puller Feb. 7, 1978
4052078 Power transmission collar Oct. 4, 1977
3997068 Assembly for attachment to excavators Dec. 14, 1976
3995701 Derrick tilting system Dec. 7, 1976

1 2 3










 
 
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