US Patent No: 7,093,670
Number of patents in Portfolio can not be more than 2000
Impact drill
Stats
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Aug 22, 2006
Issued date -
Aug 6, 2004
filing date -
10/912,098
serial no -
In Force
status
Importance
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Abstract
An impact drill minimizing transmission of vibration to a handle gripped by a user's hand. A spindle extends through a main frame and is movable in its axial direction and rotatable about its axis. A first ratchet is rotatable and axially movable together with the spindle. A second ratchet is axially movable but unrotatable. In an impact drilling mode, the first ratchet is brought into abutment with the second ratchet so that the spindle is reciprocally moved in the axial direction.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,820,312 Device for transmitting impulse-like blows to a continuously rotatable tool bit | 10 | 1996 | |
| 6,089,330 Device for transmitting pulsed axial percussions to a bore-forming tool | 10 | 1998 | |
| 5,996,708 Percussion tool | 13 | 1998 | |
| 6,196,330 Manually operable drilling tool with dual impacting function | 12 | 1999 | |
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| 4,442,906 Percussive drills | 37 | 1981 | |
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| 2005/0028,996 Impact drill | 13 | 2004 | |
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| 5,711,379 Hammer drill | 20 | 1996 | |
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| 4,567,950 Vibrating means in a power drill | 23 | 1983 | |
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| 6,138,772 Drill with a hammer mechanism | 21 | 1999 | |
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| 4,446,931 Power driven hammer drill | 26 | 1981 | |
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| 4,282,938 Vibration insulation device for handle of vibratory machine | 47 | 1978 | |
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| 6,230,819 Gyration/reciprocating action switching mechanism for a power hand tool | 21 | 1999 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 22, 2014 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 22, 2018 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |