1. An improved floral scissors assembly, comprising:
a first handle, having a first pivoting portion disposed at a top end of the first handle, and a clamping jaw integrally extended in a lateral direction from the first pivoting portion;
a blade, having a cutting-edge portion, and pivotally coupled to the first pivoting portion by a root portion of the cutting-edge portion, and the cutting-edge portion being disposed at the top of the first pivoting portion and facing the clamping jaw, and the blade having a long hole formed at an end extended from an internal side of the first pivoting portion, and a stop protrusion having a plurality of sections formed on a sidewall of the long hole;
a second handle, having a second pivoting portion disposed at a top end of the second handle and pivotally coupled to the bottom of the clamping jaw;
a link rod, having a passive end, and the passive end having a stop pin passed into the long hole, and an active end disposed at the other end of the passive end and extended into the second handle;
a switching mechanism, installed at the second handle, and proximate to the second pivoting portion, and the switching mechanism including a slice member exposed from an external side of the second handle, and at least one stop portion disposed on an internal side of the second handle, and the at least one stop portion including an upper fixed position and a lower fixed position on the internal side of the second handle, and the active end of the link rod being switchably limited at the upper fixed position and the lower fixed position by the at least one stop portion, and the stop pin being moved in an opposite direction of the active end and between the upper end and the lower end in the long hole.
2. The improved floral scissors assembly of claim 1, wherein the link rod at the position proximate to the active end is pivotally coupled to the second handle by a shaft, and both ends of the link rod are swung by using the shaft as a fulcrum, and the active end is maintained at a condition of being downwardly pulled by a tension spring; the slice member includes a first switching button and a second switching button embedded into both sides of the second handle respectively, a first stop portion being a transverse rod disposed at the upper fixed position between the two switching buttons and having an end fixed to the first switching button, and a hollow formed between the other end of the first stop portion and the second switching button, and the two switching buttons at the lower fixed position are coupled with each other by a second stop portion which is also a transverse rod, and an active end of the link rod at the upper fixed position is limited and positioned by the first stop portion when the first switching button is pressed into the second handle, and when the second switching button is pressed into the second handle, the first stop portion is moved transversally to leave the fixing position for limiting the active end, and the active end is pulled downwardly by the tension spring to move downward to the lower fixed position and limited and positioned by the second stop portion.
3. The improved floral scissors assembly of claim 2, further comprising a torque spring installed between the second pivoting portion of the second handle and the clamping jaw for spreading open the two handles to resume their original positions, and an end of the torque spring abuts the second handle against the internal side of the second pivoting portion, and the other end of the torque spring abuts against the internal side of the clamping jaw.
4. The improved floral scissors assembly of claim 1, wherein the second handle has a long slot formed between the upper fixed position and the lower fixed position and penetrated through both sides of the second handle, and each of the upper fixed position and the lower fixed position on a side of the long slot has a large-diameter hole, and a small-diameter hole with a reduced diameter is formed between the two large-diameter holes, and each of the upper fixed position and the lower fixed position on the other side of the long slot has a recess, and the active end of the link rod is extended towards the internal side of the second handle to the long slot, and a stop portion being a transverse rod with a diameter smaller than the small-diameter hole is passed through the long slot, and the stop portion is also passed through the active end, and the slice member has a press end formed at an end of the stop portion, and the other end of the stop portion has a stop end, and a positioning portion is disposed between the press end and the stop end, and the positioning portion has a diameter smaller than the large-diameter hole and greater than the small-diameter hole, and the press end and the stop end are disposed on the external side of the second handle, and the positioning portion is disposed on the internal side of the second handle, and a compression spring is installed between the positioning portion and the active end of the second handle, and when the positioning portion is acted by the compression spring to push in a direction towards the press end to the upper fixed position and lower fixed position, the positioning portion is extended into the large-diameter hole, and the stop end is embedded into each of the recesses.
5. The improved floral scissors assembly of claim 4, wherein the second handle includes a tension spring installed on the internal side of the second pivoting portion for spreading open the two handles to resume their original positions, and an end of the tension spring is coupled between the active end and passive end of the link rod, and the other end of the tension spring is coupled to a side proximate to the exterior of the clamping jaw.
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 liquid crystal shutter device for a camera, comprising:
a power supply;
an image recording plate;
a switch having first and second positions, wherein when the switch is in one of its positions, light is allowed to enter the camera through the shutter device to be recorded on the image recording plate, and when the switch is in its other position, light is prevented from entering the camera through the shutter device and being recorded on the image recording plate;
a liquid crystal box connected to the power supply and the switch, the liquid crystal box including:
a first electric plate, including a first transparent base and a first transparent electroplated layer, the first base being coated with the first electroplated layer;
a first polarizing filter formed on a surface of the first electric plate;
a second electric plate parallel to the first electric plate, the second electric plate including a second transparent base and a second transparent electroplated layer, the second base being coated with the second electroplated layer;
a second polarizing filter, the axial direction of the second polarizing filter being perpendicular to that of the first polarizing filter, the second polarizing filter being formed on a surface of the second electric plate; and
a predetermined amount of liquid crystal contained between the first electric plate and the second electric plate;
wherein the power supply, the switch, and the liquid crystal box are electrically connected in series and form a control circuit.
2. The liquid crystal shutter device as claimed in claim 1, wherein the first and second bases are made of glass.
3. The liquid crystal shutter device as claimed in claim 1, wherein the first and second electroplated layers are made of an oxide of indium and tin.
4. The liquid crystal shutter device as claimed in claim 1, wherein the liquid crystal shutter device further comprises a rheostat capable of adjusting the voltage difference between the first electric plate and the second electric plate.
5. The liquid crystal shutter device as claimed in claim 1, wherein the liquid crystal is made of nematic phase material.
6. The liquid crystal shutter device as claimed in claim 5, wherein the liquid crystal is selected from the group consisting of lithium niobate, lithium molybdate, and potassium dihydrogen phosphate.
7. A camera comprising:
a lens module; and
a liquid crystal shutter located in front of the lens module, the liquid crystal shutter including:
a power supply;
a switch;
a liquid crystal box connected to the power supply and the switch, the liquid crystal box including:
a first electric plate having a plurality of first parallel grooves defined therein;
a first polarizing filter formed on a surface of the first electric plate, an extending direction of the first parallel grooves of the first electric plate being the same as an axial direction of the first polarizing filter;
a second electric plate parallel to the first electric plate, the second electric plate having a plurality of second parallel grooves defined therein, an extending direction of the second parallel grooves being perpendicular to that of the first parallel grooves;
a second polarizing filter, the axial direction of the second polarizing filter being perpendicular to that of the first polarizing filter, the second polarizing filter being formed on a surface of the second electric plate; and
a predetermined amount of liquid crystal contained between the first electric plate and the second electric plate;
wherein the power supply, the switch, and the liquid crystal box are electrically connected in series and form a control circuit, and wherein the control circuit further includes a rheostat capable of adjusting the voltage between the first electric plate and the second electric plate.
8. The camera as claimed in claim 7, wherein at least one of the first and second electric plates comprises a base and an electroplated layer, the base being coated with the electroplated layer.
9. The camera as claimed in claim 8, wherein the electroplated layer is made of an oxide of indium and tin.
10. A liquid crystal shutter device for a camera, comprising;
a first transparent electric plate with a plurality of first parallel grooves formed in one surface thereof;
a first transparent polarizing filter formed an opposite surface of the first electric plate, the first polarizing filter having a first optical axis parallel to the first grooves;
a second transparent electric plate spaced from and parallel to the first electric plate, the second electric plate having a plurality of second parallel grooves formed in one surface thereof, the second grooves being substantially perpendicular to the first grooves, the surfaces of the first and second electric plates that form the first and second grooves facing each other;
a second transparent polarizing filter formed on an opposite surface of the second electric plate, the second polarizing filter having a second optical axis parallel to the second grooves;
a predetermined amount of liquid crystal molecules contained between the first electric plate and the second electric plate; and
a switch circuit connected to the first and second electric plates so as to selectively establish an electric field between the first and second electric plates for changing a direction of the liquid crystal molecules, thereby selectively allowing the rays of light to pass through and stopping the rays of light from passing trough the first and second polarizing filters.
11. The liquid crystal shutter device as claimed in claim 10, wherein the liquid crystal shutter device further comprises a rheostat capable of adjusting the voltage difference between the first electric plate and the second electric plate.
12. The liquid crystal shutter device as claimed in claim 10, wherein the liquid crystal is made of nematic phase material.