Twin-brushes rotary toothbrush
First Claim
1. An improved twin-brushes rotary toothbrush comprising:
- (A) a horizontally and directionally longitudinally extending hollow barrel having a fore-end and a rear-end, and also having directionally longitudinally extending topside and bottomside;
(B) a contra-directional coordinator located within said barrel, a central portion of said coordinator being pivotably attached to said barrel along a horizontal and directionally transversely extending barrel-pivot;
(C) a pair of substantially parallel, directionally longitudinally extending, and vertically offset horizontal strokearms including an upper-strokearm and a lower-strokearm, respective strokearms having a forward-portion located forwardly remote from the barrel fore-end, respective strokearms having a rearward-portion actuatably connected to said coordinator on vertically opposite sides of the barrel-pivot whereby as said coordinator is pivoted in alternating angular directions about said barrel-pivot, the strokearms simultaneously longitudinally reciprocate and respectively move in opposite longitudinal directions; and
(D) a pair of directionally transversely separated rotary brushes flanking the strokearms forward-portions and there respectively surrounding a transverse-axis, each of said brushes comprising an upright leadward-side provided with an elliptical upper-slot located above said transverse-axis and also with an elliptical lower-slot located below said transverse-axis, and each of said brushes also comprising directionally transversely extending bristles arrayed to substantially surround said transverse-axis, the upper-strokearm being provided with transversely extending crankshafts extending into and being journalled by said elliptical upper-slots, and the lower-strokearm being provided with transversely extending crankshafts extending into and being journalled by said elliptical lower-slots whereby as said contradirectional coordinator is pivoted in alternating angular directions and the respective strokearms reciprocate in opposite longitudinal directions, the said crankshafts bear directionally longitudinally against said brushes slotted portions and the brushes are caused to move in alternating angular directional synchronization with the coordinator, and there being means for maintaining a fixed transverse spacing between said brushes.
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Accused Products
Abstract
Rotary toothbrush utilizes a longitudinally extending hollow barrel having a fore-end and a rear-end. Longitudinally extending and reciprocatable strokearm mechanism is predominately located within the hollow barrel but includes a forward-portion always located forwardly of the barrel. A pair of transversely separated, upright rotary brushes are positioned wholly forwardly of the barrel and there eccentrically journal crankshafts carried by the strokearm mechanism forward-portion so that strokearm reciprocations cause the two brushes to move together in alternating angular directions. The strokearm mechanism forward-portion might be provided with auxiliary bristles for simultaneously brushing the dental occlusial surfaces as the rotary brushes treat the bucal and lingual surfaces.
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Citations
16 Claims
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1. An improved twin-brushes rotary toothbrush comprising:
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(A) a horizontally and directionally longitudinally extending hollow barrel having a fore-end and a rear-end, and also having directionally longitudinally extending topside and bottomside; (B) a contra-directional coordinator located within said barrel, a central portion of said coordinator being pivotably attached to said barrel along a horizontal and directionally transversely extending barrel-pivot; (C) a pair of substantially parallel, directionally longitudinally extending, and vertically offset horizontal strokearms including an upper-strokearm and a lower-strokearm, respective strokearms having a forward-portion located forwardly remote from the barrel fore-end, respective strokearms having a rearward-portion actuatably connected to said coordinator on vertically opposite sides of the barrel-pivot whereby as said coordinator is pivoted in alternating angular directions about said barrel-pivot, the strokearms simultaneously longitudinally reciprocate and respectively move in opposite longitudinal directions; and (D) a pair of directionally transversely separated rotary brushes flanking the strokearms forward-portions and there respectively surrounding a transverse-axis, each of said brushes comprising an upright leadward-side provided with an elliptical upper-slot located above said transverse-axis and also with an elliptical lower-slot located below said transverse-axis, and each of said brushes also comprising directionally transversely extending bristles arrayed to substantially surround said transverse-axis, the upper-strokearm being provided with transversely extending crankshafts extending into and being journalled by said elliptical upper-slots, and the lower-strokearm being provided with transversely extending crankshafts extending into and being journalled by said elliptical lower-slots whereby as said contradirectional coordinator is pivoted in alternating angular directions and the respective strokearms reciprocate in opposite longitudinal directions, the said crankshafts bear directionally longitudinally against said brushes slotted portions and the brushes are caused to move in alternating angular directional synchronization with the coordinator, and there being means for maintaining a fixed transverse spacing between said brushes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An improved twin-brushes rotary toothbrush comprising:
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(A) a horizontal and directionally longitudinally extending hollow barrel having a fore-end and a rearend, and also having longitudinally extending topside and bottomside; (B) directionally longitudinally extending and longitudinally reciprocatable strokearm means located within and connected to said barrel, said strokearm means comprising a pair of strokearms and respectively including a forward-portion always located forwardly of the barrel; and (C) a pair of rotary brushes respectively circularly surrounding a transverse-axis, said brushes being located wholly forwardly of the barrel and flanking the strokearm means forward-portion, each strokearm of the strokearm means at the forward-portion thereof carrying directionally transversely extending crankshafts being journalled by elliptically slotted portions of said brushes, said elliptically slotted portions being radially offset from said transverse-axis, and there being means for maintaining a fixed transverse spacing between the two brushes. - View Dependent Claims (15, 16)
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Specification