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US 5,176,690 AGranted
Power-operated tweezers device
AssigneeProduct Development (Z.G.S.) Ltd.
InventorsJoseph Gross, Shlomo Zucker
Life of this patent
Estimating the term…
Abstract
A power-operated tweezers device for plucking hairs includes a reciprocatable member coupled to a motor, tweezers, a lost-motion coupling between the reciprocatable member and the tweezers effective to move the tweezers to an extended position only during a first part of the forward stroke of the reciprocatable member, and to a retracted position only during a first part of the return stroke of the reciprocatable member; and means effective to move the tweezer jaws to their closed positions during a last part of the forward stroke of the reciprocatable member, and to their open positions during a last part of the return stroke of the reciprocatable member.
Claims17
A power-operated tweezers device for plucking hairs, comprising:
- a motor fixed with respect to a base;
- a reciprocatable member coupled to said motor so as to be driven through a forward stroke to an extended position, and through a return stroke to a retracted position;
- tweezer means including a pair of arms having jaws movable to an open position to straddle a hair to be plucked, or a closed position to clamp the hair therebetween;
- a lost-motion coupling between said reciprocatable member and said tweezer means effective to move the tweezer means to an extended position only during a first part of the forward stroke of the reciprocatable member, and to a retracted position only during a first part of the return stroke of the reciprocatable member;
- said lost-motion coupling including a pin fixed to the base and received within a long slot formed in said reciprocatable member and a short slot formed in said tweezer means;
- and tweezer closing-opening means effective to move the tweezer jaws to their closed positions during a last part of the forward stroke of the reciprocatable member, and to their open positions during a last part of the return stroke of the reciprocatable member.
3 more elements
A power-operated tweezers device for plucking hairs, comprising:
- a motor fixed with respect to a base;
- a reciprocatable member coupled to said motor so as to be driven through a forward stroke to an extended position, and through a return stroke to a retracted position;
- tweezer means including a pair of arms having jaws movable to an open position to straddle a hair to be plucked, or a closed position to clamp the hair therebetween;
- a lost-motion coupling between said reciprocatable member and said tweezer means effective to move the tweezer means to an extended position only during a first part of the forward stroke of the reciprocatable member, and to a retracted position only during a first part of the return stroke of the reciprocatable member;
- and tweezer closing-opening means effective to move the tweezer jaws to their closed positions during a last part of the forward stroke of the reciprocatable member, and to their open positions during a last part of he return stroke of the reciprocatable member;
- said motor being a rotary motor having a rotary shaft and being coupled to said reciprocatable member by an eccentric rotated by said rotary shaft;
- said rotary shaft rotating a worm gear meshing with a gear wheel eccentrically coupled to said reciprocatable member.
4 more elements
A power-operated tweezers device for plucking hairs, comprising:
- a motor fixed with respect to a base;
- a reciprocatable member coupled to said motor so as to be driven through a forward stroke to an extended position, and through a return stroke to a retracted position;
- tweezer means including a pair of arms having jaws movable to an open position to straddle a hair to be plucked, or a closed position to clamp the hair therebetween;
- a lost-motion coupling between said reciprocatable member and said tweezer means effective to move the tweezer means to an extended position only during a first part of the forward stroke of the reciprocatable member, and to a retracted position only during a first part of the return stroke of the reciprocatable member;
- and tweezer closing-opening means effective to move the tweezer jaws to their closed position during a last part of the forward stroke of the reciprocatable member, and to their open positions during a last part of the return stroke of the reciprocatable member;
- said reciprocatable member being a reciprocatable plate movable on said base and constrained to reciprocal movements by pins fixed to said base movable in slots formed in said plate.
3 more elements
A power-operated tweezers device for plucking hairs, comprising:
- a motor carried by a base and having a rotary shaft;
- a reciprocatable member coupled to said motor by an eccentric rotated by said rotary shaft so as to be cyclically driven through a forward stroke to an extended position, and through a return stroke to a retracted position;
- tweezer means including a pair of arms having jaws movable to an open position, or a closed position;
- a lost-motion coupling between the reciprocatable member and the tweezer means, including a pin fixed to the base and received within a long slot formed in the reciprocatable member and a short slot formed in the tweezer means, effective to move the tweezer means to an extended position only during a first part of the forward stroke of the reciprocatable member, and to a retracted position only during a first part of the return stroke of the reciprocatable member;
- and tweezer closing-opening means effective to move the tweezer jaws to their closed positions during a last part of the forward stroke of the reciprocatable member, and to their open positions during a last part of the return stroke of the reciprocatable member.
2 more elements
Dependencies are inferred from the claim text.