1. A dispenser for liquid products comprising:
an essentially rigid chamber for holding liquid under pressure and comprising a spring and a piston to place liquid injected into the chamber under pressure,
a pump arrangement for pumping liquid from a removable liquid holding reservoir into the chamber for holding liquid under pressure,
the pump being connected to the chamber through a one-way valve preventing liquid to flow from the chamber back into the pump arrangement; and
the chamber being connected to a spray nozzle through a valve controllable by the user for spraying said liquid.
2. The dispenser of claim 1 wherein the liquid holding reservoir is a flexible one-way refill pack.
3. The dispenser of claim 1 wherein the liquid holding reservoir is connectable to the pump arrangement by a flexible tube and a one-way valve that allows flow of liquid solely from the reservoir to the pump.
4. The dispenser of claim 3 wherein the one-way valve is arranged in a connector.
5. The dispenser of claim 1 wherein the pump arrangement comprises a cylinder of essentially circular section, one end of which is connectable to the liquid holding reservoir through a one-way valve that allows flow of liquid solely from the reservoir to the pump, and is further connected to the chamber through the one-way valve preventing liquid to flow from the chamber back into the pump cylinder, and a piston slidably mounted in the cylinder in a liquid tight manner, the piston being assembled with a rod extending through the opposite end of the cylinder into a handle for operation by the user.
6. The dispenser of claim 1 wherein the piston and the spring are arranged at the bottom of the chamber.
7. The dispenser of claim 5 wherein the pump cylinder is arranged essentially parallel to the axis of the chamber and adjacent to it.
8. The dispenser of claim 5 wherein the pump cylinder is separate from the chamber and inclined compared to the axis of the chamber.
9. The dispenser of claim 8 wherein the piston is arranged at the top of the pump and is connected to the rod extending into the handle through the bottom end of the pump.
10. The dispenser according to claim 8 wherein the pump is assembled to the chamber at the top of the arrangement.
11. The dispenser according to claim 10 wherein the top of the arrangement comprises a tube connector, the spray nozzle and a trigger button.
12. The dispenser according to claim 1 wherein the nozzle is mounted on an essentially rigid tube or lance which is slidably mounted in a casing.
13. The dispenser according to claim 12 further comprising two opposite grips solid with the lance and extending through the casing.
14. The dispenser according to claim 13 wherein the grips interact with a release button to constitute a child-resistant assembly.
15. The dispenser according to claim 14 wherein the grips are in the form of a click assembly snapping into a counterpart on the casing in several (intermediate) locked positions of the lance, and releasable by pressure on one part of each grip or by squeezing action.
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 polarized light color filter having an incident light side and an emitted light side and comprising, in order and at an angle to the incident light optical path, a first polarized light converting element provided adjacent the incident light side for selectively emitting polarized incident light thereon after either changing the polarity of the polarized incident light or leaving the polarity of the incident light unchanged according to a voltage applied to the first polarized light converting element, a first polarization spectroscopic element comprising a first narrow band polarization spectroscopic element for reflecting only the S-polarized light component out of a first primary light corresponding to a first primary color, a second polarized light converting element for selectively emitting polarized incident light thereon after either changing the polarity of the polarized incident light or leaving the polarity of the incident light unchanged according to a voltage applied to the second polarized light converting element, a second polarization spectroscopic element comprising a second narrow band polarization spectroscopic element for reflecting only the S-polarized light component out of a second primary light corresponding to a second primary color, a third polarized light converting element for selectively emitting polarized incident light thereon after either changing the polarity of the polarized incident light or leaving the polarity of the incident light changed according to a voltage applied to the third polarized light converting element, a third polarization spectropscopic element comprising a third narrow band polarization spectroscopic element for reflecting only the S-polarized light component out of a third primary light corresponding to a third primary color and control means for applying a voltage on a time-divisional basis to the first, second and third polarized light converting elements.
2. The polarized light color filter according to claim 1, wherein a first wide-band polarization spectroscopic element, for reflecting the S-polarized light component of the incident light over the whole range of the visible light while transmitting the P-polarized light component, is provided on an incident light side of the first polarized light converting element.
3. The polarized light color filter according to claim 2, wherein the first, second and third polarized light converting elements, the first, second and third narrow-band polarization spectroscopic elements and the first wide-band polarization spectroscopic element formed on a transparent substrate.
4. The polarized light color filter according to claim 2, wherein the first, second and third polarized light converting elements, the first, second and third narrow-band polarization spectroscopic elements and the first wide-band polarization spectroscopic element are interposed between inclined surfaces of two triangular prisms which form a rectangular parallelepiped when joined by their inclined surfaces.
5. The polarized light color filter according to claim 2, wherein the first, second and third polarized light converting elements, the first, second and third narrow-band polarization spectroscopic elements and the first wide-band polarization spectroscopic element are provided on an inclined surface of a triangular prism.
6. The polarized light color filter according to claim 1, wherein first wide-band polarization spectroscopic element, for reflecting the S-polarized component of the incident light over the whole range of visible light while transmitting the P-polarized light component, is provided on an incident light side of the first polarized light converting element and a fourth polarized light converting element for selectively emitting polarized incident light thereon after either changing the polarity of the polarized incident light or leaving the polarity of the polarized incident light unchanged according to a voltage applied thereteto the fourth polarized light converting element, is provided on an emission side of the third polarization spectroscopic element.
7. The polarized light color filter according to claim 6, wherein the first, second, third and fourth polarized light converting elements, the first, second and third narrow-band polarization spectroscopic elements, and the first wide-band polarization spectroscopic element are formed on a transparent substrate.
8. The polarized light color filter according to claim 6, wherein the first, second, third and fourth polarized light converting elements, the first, second and third narrow-band polarization spectroscopic elements, and the first wide-band polarization spectroscopic elements are provided between inclined surfaces of two triangular prisms which form a rectangular parallelepiped when joined by their inclined surfaces.
9. The polarized light color filter according to claim 6, wherein the first, second, third and fourth polarized light converting elements, the first, second and third narrow-band polarization spectroscopic elements, and the first wide-band polarization spectroscopic element are provided on an inclined surface of a triangular prism.
10. The polarized light color filter according to claim 1, comprising a first wide-band polarization spectroscopic element, for reflecting the S-polarized light component of the incident light over the whole range of visible light while transmitting the P-polarized light component, is provided on an incident light side of the first polarized light converting element, and a fourth polarized light converting element, for selectively emitting polarized incident light thereon after either changing the polarity of the polarized incident light or leaving the polarity of the polarized incident light unchanged according to a voltage applied to the fourth polarized light converting element and a second wide-band polarization spectroscopic element for reflecting the S-polarized light component of the incident light while transmitting the P-polarized light component over the whole range of visible light, are provided on an emission side of the third polarized light converting element.
11. The polarized light color filter according to claim 10, wherein the first, second, third and fourth polarized light converting elements, the first, second and third narrow-band spectroscopic elements, and the first and second wide-band polarization spectroscopic elements are formed on a transparent substrate.
12. A video projector comprising the polarized light color filter according to claim 11, wherein ehea reflection optical modulating element is provided on an emission side of said polarized light color filter, a projection lens is provided on a non-emission side, and the voltages applied to the first, second, third and fourth polarized light converting elements are controlled so that the three primary lights are emitted to said reflection optical modulating element from said polarized light color filter and controlled on the time-division basis.
13. The video projector according to claim 12, wherein a \xbc wave plate and a total reflection mirror are sequentially provided on another emission side of the polarized light color filter.
14. The video projector according to claim 12, wherein a second reflection optical modulating element, having an identical structure with that of said reflection optical modulating element, is provided on another emission side of said polarized light color filter.
15. A video projector comprising the polarized light color filter according to claim 11, wherein a sequential transmission optical modulating element and a projection lens are provided on an emission side of said polarized light color filter and the voltages applied to the first, second, third and fourth polarized light converting elements are controlled so that the three primary lights are emitted to said transmission optical modulating element and controlled on the time-division basis.
16. The polarized light color filter according to claim 10, wherein the first, second, third and fourth polarized light converting elements, the first, second and third narrow-band polarization spectroscopic elements, and the first and second wide-band polarization spectroscopic elements are interposed between inclined surfaces of two triangular prisms which form a rectangular parallelepiped when joined by their inclined surfaces.
17. The polarized light color filter according to claim 10, wherein the first, second, third and fourth polarized light converting elements, the first, second and third narrow-band polarization spectroscopic elements, and the first and second wide-band polarization spectroscopic elements are formed on an inclined surface of a triangular prism.
18. The polarized light color filter according to claim 1, wherein the first, second and third polarized light converting elements and the first, second and third narrow-band polarization spectroscopic elements are formed on a transparent substrate.
19. A video projectors comprising the polarized color filter according to claim 18, wherein a reflection optical modulating element is provided on an emission side of said polarized light color filter; a projection lens is provided on a non-emission side of said polarized light color filter; the three primary lights are emitted to said reflection optical modulating element from said polarized light color filter and controlled on the time-division basis by controlling the voltages applied to the first, second and third polarized light converting elements.
20. A video projectors comprising the polarized light color filter according to claim 18, wherein a sequential transmission optical modulating element and a projection lens are provided on an emission side of said polarized light color filter, and the voltages applied to the first, second and third polarized light converting elements are controlled so that the three primary lights are emitted to said sequential transmission optical modulating element from said polarized light color filter and controlled on the time-division basis.
21. The polarized light color filter according to claim 1, wherein the first, second and third polarized light converting elements and the first, second and third narrow-band polarization spectroscopic elements are interposed between inclined surfaces of two of triangular prisms which form a rectangular parallelepiped when joined by their respective inclined surfaces.
22. The polarized light color filter according to claim 1, wherein the first, second and third polarized light converting elements and the first, second and third narrow-band polarization spectroscopic elements provided on an inclined surface of a triangular prism.