Author: claimsbot

1. A power tool comprising:
a tool bit flat performs a predetermined operation on a workpiece,
a tool holder that holds the tool bit,
a cylindrical bit holding member provided with the tool holder,
a bit mounting bole provided with the bit holding member, wherein the tool bit can be inserted into or removed from the bit mounting hole in the axial direction of the tool bit,
a through hole formed in the bit holding member,
an outside opening defined by one end of the through hole open to an outside surface of the bit holding member,
a bit mounting hole side opening defined by the other end of the through hole open to the bit mounting hole,
an engaging member disposed within the through hole to move between an outside position in which the engaging member protrudes from the outside opening and an inside position in which the engaging member protrudes from the bit mounting hole side opening,
a cylindrical operating member coupled on the bit holding member to move in the axial direction of the tool bit holding member,
a movement preventing portion disposed within the operating member, the Casing member moving between a movement preventing position and a movement allowing position in relation to the movement of the operating member, wherein the movement preventing portion prevents movement of the engaging member from the inside position to the outside position by engaging with the engaging member when located in the movement preventing position and wherein the movement preventing portion allows movement of tie engaging member between the inside position and the outside position by disengaging from the engaging member when located in the movement allowing position,
a biasing member that applies a biasing force to the operating member so as to hold the movement preventing portion normally in the movement preventing position,
a first engaging region defined between the tool bit and the engaging member, wherein the first engaging region is formed in the direction of insertion of the tool bit into the bit mounting hole,
a second engaging region defined between the tool bit and the engaging member, wherein the second engaging region is formed in the direction of removal of the tool bit from the bit mounting hole,
a third engaging region defined between the engaging member and the operating member, wherein the third engaging region is formed contiguous to the movement preventing portion when the tool bit is inserted into the bit mounting hole,
wherein when the tool bit is inserted into the bit mounting hole, the engaging member moves from the inside position to the outside position via the first engaging region and in relation to the movement to the outside position, the engaging the moves the movement preventing portion of the operating member from the movement preventing position to the movement allowing position via the third engaging region against the biasing force of the biasing member so as to define a cam actuating member to allow the firer insertion of the tool bit and
wherein when the tool bit is inserted into a predetermined position within the bit mounting hole, the movement preventing portion of the operating member moves from the movement allowing position to the movement preventing position by the biasing force of the biasing spring to cause the engaging member to move from the outside position to the inside position via third engaging portion such that the engaging member engages with the tool bit via the second engaging region in the inside position so as to define a stopper to prevent removal of the tool bit by further engaging with the movement preventing portion located in the movement preventing position.
2. The power tool as defined in claim 1, wherein the en member is defined by a ball.
3. The power tool as defined in claim 1, wherein the tool bit comprises a first member that guides the engaging member to move from the inside position to the outside position by maintaining an engagement between the engaging member and the tool bit when the tool bit is inserted into the bit mounting hole.
4. The power tool as defined in claim 1, wherein the tool bit comprises a second cam member that presses the engaging member from the inside position to the outside position by maintaining an engagement between the engaging member and the tool bit within the second engaging region, thereby preventing removal of the tool bit by pressing the engaging member with the movement preventing portion located in the movement preventing position.
5. The power tool as defined in claim 1, wherein the operating member comprises a third cam member tat guides the movement preventing portion of the operating member within the third engaging region to move from the movement preventing position to the movement allowing position by maintaining an engagement between the engaging member and the movement preventing portion in relation to the movement of the engaging member from the inside position to the outside position when the tool bit is inserted into the bit mounting hole.
6. The power tool as defined in claim 1, wherein the though hole to receive the engaging member is formed as an elongate hole elongated in the axial direction of the tool bit so as to allow the engaging member to move in the axial direction, whereby, when the tool bit is inserted into the bit mounting hole and presses the engaging member via the fist engaging region, the through hole allows the engaging member to move from the movement preventing portion to the third engaging region, while when the tool bit inserted into a predetermined position within the bit mounting hole is moved in the diction of removal and presses the engaging member via the second engaging region, the trough hole allows the engaging member to move toward the movement preventing portion.
7. The power tool as defined in claim 1, wherein the trough hole is formed as an inclined hole that extends linearly at a predetermined inclination angle with respect to the axis of the tool bit such that the bit mounting hole side opening of the trough hole is located forward of the outside opening when viewed from the tool bit inserting direction, and a forward inclined surface of the inclined hole applies resistance to movement of the engaging member which tends to move from the inside position to the outside position when an external force acts on the tool bit in the direction of removal with the engaging member held in engagement with the tool bit via the second engaging region.
8. The power tool as defined in claim 7 further comprising an elastically deformable stopping member disposed in a region of the outside opening of the in ed hole, the stopping member preventing free movement of the engaging member, wherein when the tool bit is inserted into the bit mounting hole and moves the engaging member from the inside position to the outside position via the first engaging region, the stopping member is pushed by the engaging member and elastically deformed to allow the engaging member to move from the inside position to the outside position.
9. The power tool as defined in claim 1, wherein the tool bit is provided to perform screw tightening work, wrench work or drill work.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A magnetically coded card for use with a lock having a slot into which the card is inserted to operate the lock, the card comprising at least one dimple projecting therefrom and engaging with the slot upon insertion therein and providing resistance against removal of the card from the slot.
2. The magnetically coded card of claim 1 comprising an aperture through which a card-impaling lock-in pin of the lock can pass when the card is fully inserted within the slot.
3. A magnetically coded card for use with a lock having a slot into which the card is inserted to operate the lock, comprising an aperture for impaling by a card lock-in pin of the lock when the card is fully inserted within the slot wherein the aperture has openings of different dimension at each side of the card.
4. A magnetically coded card for use with a lock having a slot into which the card is inserted to operate the lock, and an aperture through which a card-impaling lock-in pin or actuator pin of the lock can pass when the card is fully inserted within the slot, the card comprising a magnetic insert between a hard magnetic sheet and a soft non-magnetic sheet, the hard magnetic sheet having a large opening at the card aperture, and the non-magnetic sheet having a smaller opening flared into the card aperture.
5. The magnetically coded card of claim 4, wherein the hard magnetic sheet is made of metal.
6. In combination, a lock and a magnetically coded card, the lock comprising a slot into which the card is inserted to operate the lock, and a latching button extending into the slot, the card comprising an aperture for impaling by the latching button when the card is fully inserted within the slot, the aperture having openings of different dimension at each side of the card.
7. The combination of claim 6, wherein the latching button has a bevelled upper surface to allow the card to pass by the latching button when force is applied to the card.
8. The combination of claim 7, wherein the latching button is made of hardened steel.
9. The combination of claim 6, wherein the lock further comprises a spring base having a spring leaf extending therefrom and on which the latching button is located.
10. The combination of claim 6, wherein the lock further comprises a magnetic shield plate, a non-magnetic cover plate, and a spring plate having a hole therethrough and through which the latching button extends, the spring plate biasing the magnetic shield plate into contact with the non-magnetic cover plate to keep the slot closed when there is no card in the slot.
11. In combination, a lock and a magnetically coded card, the lock comprising a slot into which the card is inserted to operate the lock, and a latching button extending into the slot, the card comprising a magnetic insert between a hard magnetic sheet and a soft non-magnetic sheet, the card having an aperture therethrough, the hard magnetic sheet having a large opening at the aperture, and the non-magnetic sheet having a smaller opening flared into the aperture.
12. The combination of claim 11, wherein the latching button has a bevelled upper surface to allow the card to pass by the latching button when force is applied to the card.
13. The combination of claim 11, wherein the hard magnetic sheet is made of metal.
14. The combination of claim 11, wherein the latching button is made of hardened steel.
15. The combination of claim 11, wherein the lock further comprises a spring base having a spring leaf extending therefrom and on which the latching button is located.
16. The combination of claim 11, wherein the lock further comprises a magnetic shield plate, a non-magnetic cover plate, and a spring plate having a hole therethrough and through which the latching button extends, the spring plate biasing the magnetic shield plate into contact with the non-magnetic cover plate to keep the slot closed when there is no card in the slot.

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10. An electrophysiological catheter having at least a first feature subject to manipulation by a user, the catheter comprising:
an elongated catheter body, the first feature being distal of the catheter body;
a control handle; and
a plurality of puller wires extending from the control handle and through at least the elongated catheter body,
wherein the control handle comprises:
a housing;
a deflection assembly comprising:
a deflection actuator adapted for rotation by the user;
a pulley arm adapted for rotation about a rotational axis in response to rotation of the deflection actuator, at least a first of the puller wires coupled to the pulley arm, wherein rotation of the pulley arm actuates the at least first puller wire;

a disk actuator adapted for rotation about the rotational axis by the user; and
a second of the puller wires coupled to the disk actuator, wherein rotation of the disk actuator actuates the second puller wire to manipulate the first feature,
wherein the pulley arm has a radial bearing formation defining the rotational axis, and the disk actuator is positioned on the radial bearing formation and adapted to wrap the second puller wire on the radial bearing formation when the disk actuator is rotated by the user, the disk actuator and the pulley arm being rotationally independent of each other.
11. A catheter of claim 10, the housing has an opening and the disk actuator has a tab extending through the opening to outside of the housing.
12. A catheter of claim 10, the pulley arm has a main body and the disk actuator is positioned between the main body and the housing of the control handle.
13. An electrophysiological catheter having at least a first feature subject to manipulation by a user, the catheter comprising:
an elongated catheter body, the first feature being distal of the catheter body;
a control handle defining a longitudinal axis; and
a plurality of puller wires extending from the control handle and through at least the elongated catheter body,
wherein the control handle comprises:
a housing;
a deflection assembly comprising:
a deflection actuator adapted for rotation by the user;
a pulley arm adapted for rotation about a first rotational axis in response to rotation of the deflection actuator, at least a first of the puller wires coupled to the pulley arm, wherein rotation of the pulley arm actuates the at least first puller wire; and
a lever actuator adapted for rotation about a second rotational axis by the user , the second rotational axis being generally parallel with the longitudinal axis of the control handle, a second of the puller wires being coupled to the lever actuator and rotation of the lever actuator actuates the second puller wire to manipulate the first feature, and
wherein the lever actuator and the pulley arm are rotationally independent of each other.
14. An electrophysiological catheter of claim 13, wherein the housing has an opening and the level actuator has an end extending through the opening to outside the housing.
15. An electrophysiological catheter of claim 13, wherein the level actuator has a shroud portion adapted to cover the opening.
16. An electrophysiological catheter having at least a first feature subject to manipulation by a user, the catheter comprising:
an elongated catheter body, the first feature being distal of the catheter body;
a control handle defining a longitudinal axis; and
a plurality of puller wires extending from the control handle and through at least the elongated catheter body,
wherein the control handle comprises:
a housing;
a deflection assembly comprising:
a deflection actuator adapted for rotation by the user;
a pulley arm adapted for rotation about a first rotational axis in response to rotation of the deflection actuator, at least a first of the puller wires coupled to the pulley arm, wherein rotation of the pulley arm actuates the at least first puller wire; and

a ring actuator mounted on the control handle and adapted for rotation about the longitudinal axis of the control handle, a second of the puller wires being coupled to the ring actuator and rotation of the ring actuator actuates the second puller wire to manipulate the first feature,

wherein the ring actuator and the pulley arm are rotationally independent of each other.
17. An electrophysiological catheter of claim 16, wherein rotation of the ring actuator wraps the second puller wire around the control handle.
18. An electrophysiological catheter of claim 16, wherein the housing has an opening and a proximal portion of the second puller wire extends through the opening and is anchored to the ring actuator.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

I claim:

1. An artificial nail tip, comprising:
A body member having a front portion and a back portion, a first side and a second side, said back portion having a first cutout portion on the first side and a second cutout portion on the second side, said first cutout portion and said second cutout portion defining a wing attachment area, said wing attachment area being relatively thinner than said front portion.
2. The artificial nail tip of claim 1 wherein said back portion has a certain area and a certain length and wherein said first cutout portion and said second cutout portion are of similar dimensions.
3. The artificial nail tip of claim 2 wherein said wing attachment area comprises one-third of the area of the back portion.
4. The artificial nail tip of claim 3 wherein the front portion and back portion are delineated by an edge to abut the nail tip to the wearer’s natural nail.
5. The artificial nail tip of claim 4 wherein the body member has a longitudinal curvature from the back portion to the front portion and an axial curvature from the first side to the second side.