Reciprocating workpiece device with a drive system seeking the resonance of the driven system portion thereof
First Claim
1. A workpiece system having a reciprocating action, comprising:
- a drive assembly coupled with a driven member assembly in such a manner to produce a drive signal for the driven assembly comprising periodic force pulses, resulting in a drive frequency which increases from zero in operation of the work piece system; and
a driven member assembly having a workpiece mounted thereon with a return action assembly, the driven member assembly having a resonant frequency, wherein, as the drive frequency increases from zero as the periodic force pulses increase, the drive frequency will approach the resonant frequency of the driven assembly, wherein at approximately said resonant frequency, at least a substantial portion of energy produced as a result of the force pulses is transferred into the movement of the workpiece, producing an effective workpiece action.
1 Assignment
0 Petitions
Accused Products
Abstract
A workpiece system with a reciprocating motion which includes a motor assembly for producing an output drive signal with a periodic force pulse. The drive signal is coupled to a driven member assembly through a magnetic arrangement, wherein the driven member assembly has a workpiece mounted thereon with a return spring assembly. The driven member assembly has a resonant mechanical frequency. As the RPM of the motor increases from zero following startup, the drive signal frequency increases to the point very near resonance, where the energy from the drive signal is transferred into the reciprocating motion of the driven assembly, producing an effective amplitude of workpiece motion.
79 Citations
29 Claims
-
1. A workpiece system having a reciprocating action, comprising:
-
a drive assembly coupled with a driven member assembly in such a manner to produce a drive signal for the driven assembly comprising periodic force pulses, resulting in a drive frequency which increases from zero in operation of the work piece system; and a driven member assembly having a workpiece mounted thereon with a return action assembly, the driven member assembly having a resonant frequency, wherein, as the drive frequency increases from zero as the periodic force pulses increase, the drive frequency will approach the resonant frequency of the driven assembly, wherein at approximately said resonant frequency, at least a substantial portion of energy produced as a result of the force pulses is transferred into the movement of the workpiece, producing an effective workpiece action. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A dental hygiene device for cleaning teeth, comprising:
-
a drive assembly coupled with a driven assembly in such a manner to produce a drive signal for the driven assembly comprising force pulses, resulting in a drive frequency which gradually increases from zero in operation of the dental hygiene device, wherein the drive assembly includes a battery powered DC motor; and the driven assembly having a brushhead mounted thereon with a return spring assembly, the driven assembly having a resonant frequency, and wherein as the drive frequency increases from zero, the drive frequency will approach the resonant frequency of the driven assembly, at which point the energy produced by the motor is transferred into movement of the brushhead, such that the tips of the bristles of the brushhead move at a velocity greater than approximately 1.5 meters per second, sufficient to produce a cleansing action on the teeth. - View Dependent Claims (28, 29)
-
Specification