Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Reexamination Certificate
2006-06-13
2006-06-13
Smith, Scott A. (Department: 3721)
Tool driving or impacting
Drive by means reacting to rotating eccentric mass
C173S053000, C173S090000, C173S114000, C173S121000, C173S211000, C227S147000
Reexamination Certificate
active
07059423
ABSTRACT:
A jackhammer system for reducing the vibration and noise experienced by an operator of the jackhammer. The jackhammer system includes a housing, a chisel movably positioned within a lower neck of the housing, a pair of flywheels rotatably attached to a pair of support brackets, a ram slidably positioned within a guide channel and engageable by the flywheels to engage the chisel, a plurality of elastic members attached to the ram, and an actuator mechanically connected to the support brackets for controlling a position of the flywheels. An upper sensor and a lower sensor determine the position of the ram within the guide channel. An engaging plate supported by a plurality of compression springs receives the downwardly impact of the ram when driving the chisel downwardly. A recoil absorber having a recoil spring is attached to an upper portion of the housing for absorbing the recoil of the ram.
REFERENCES:
patent: 3559753 (1971-02-01), Meri et al.
patent: 4042036 (1977-08-01), Smith et al.
patent: 4060138 (1977-11-01), Cox et al.
patent: 4077303 (1978-03-01), Poulsen
patent: 4237987 (1980-12-01), Sherman
patent: 4747455 (1988-05-01), Cunningham
patent: 4964558 (1990-10-01), Crutcher et al.
patent: 5174386 (1992-12-01), Crover
patent: 5797463 (1998-08-01), Winter et al.
patent: 6488264 (2002-12-01), Wiklund
patent: 2004/0159450 (2004-08-01), Campling
Buster ‘B’ brochure JDB Corporation.
Smith Scott A.
Weeks Gloria R.
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