Cutting by use of rotating axially moving tool – Means to drive tool – Including means to move tool along tool-axis
Reexamination Certificate
2007-11-06
2007-11-06
Howell, Daniel W. (Department: 3722)
Cutting by use of rotating axially moving tool
Means to drive tool
Including means to move tool along tool-axis
C408S134000, C408S139000, C408S141000, C173S170000, C173S216000, C074S321000, C074S323000, C470S096000, C470S182000
Reexamination Certificate
active
10940641
ABSTRACT:
A drilling/tapping/unscrewing apparatus including a transmission shaft of a power source on which a drilling ratio gear, a tapping ratio gear and an unscrewing ratio gear are mounted for transmitting the power of the power source to a bit. The apparatus further includes an adjustment unit for controlling the switching between the drilling, tapping and unscrewing operations of the apparatus. The adjustment mechanism includes a bit shaft on which a drilling gear, a tapping gear and an unscrewing gear are fitted. The tapping gear and the unscrewing gear are respectively engaged with the tapping ratio gear and the unscrewing ratio gear. The drilling gear and the tapping gear are controlled by an adjustment button to synchronously move up and down on the bit shaft, whereby the drilling gear can be engaged with or disengaged from the drilling ratio gear.
REFERENCES:
patent: 1017785 (1912-02-01), Miller
patent: 1260896 (1918-03-01), Halstead
patent: 1581927 (1926-04-01), Kollock
patent: 1752422 (1930-04-01), Galloway
patent: 1977061 (1934-10-01), Hey
patent: 2370885 (1945-03-01), Sohm
patent: 2793305 (1957-05-01), Gerentes
patent: 4710071 (1987-12-01), Koehler et al.
patent: 2412935 (1975-10-01), None
Howell Daniel W.
Lee Yeong Industrial Co., Ltd.
Troxell Law Office PLLC
LandOfFree
Drilling/tapping/unscrewing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drilling/tapping/unscrewing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drilling/tapping/unscrewing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3886882