IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0483376
(2006-07-07)
|
등록번호 |
US-7670141
(2010-04-21)
|
발명자
/ 주소 |
- Thomas, Brenda Lee
- Taylor, Kurt Michael
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
82 인용 특허 :
250 |
초록
▼
The present invention is an oral irrigator comprising a pump, a discharge nozzle and a pressure control. The pump has a generally constant operating speed and feeds the discharge nozzle. The pressure control is adapted to modify a discharge pressure at the nozzle without a significant change in pump
The present invention is an oral irrigator comprising a pump, a discharge nozzle and a pressure control. The pump has a generally constant operating speed and feeds the discharge nozzle. The pressure control is adapted to modify a discharge pressure at the nozzle without a significant change in pump speed. The pressure control modifies a level of fluid flow restriction between the pump and the nozzle. The modification of the level of fluid flow restriction is accomplished by modifying aspects of a fluid flow path extending through the pressure control. The aspects modified include the diameter, length and/or number of direction changes of the fluid flow path.
대표청구항
▼
What is claimed is: 1. A handheld oral irrigator comprising: a fluid reservoir; a pump including a suction side and a discharge side, wherein the suction side is in fluid communication with the fluid reservoir; a pressure control assembly including a valve cylinder and a member longitudinally displ
What is claimed is: 1. A handheld oral irrigator comprising: a fluid reservoir; a pump including a suction side and a discharge side, wherein the suction side is in fluid communication with the fluid reservoir; a pressure control assembly including a valve cylinder and a member longitudinally displaceable within the valve cylinder, wherein the valve cylinder has an inlet and an outlet, wherein the inlet is in fluid communication with the discharge side of the pump, and wherein the member includes a lumen and an orifice leading to the lumen from an outside surface of the member; and a nozzle in fluid communication with the outlet of the valve cylinder, wherein placing the member in a first position within the valve cylinder causes the orifice to be placed in fluid communication with the inlet and thereby define a fluid pathway from the inlet to the outlet that extends through the lumen, wherein placing the member in a second position within the valve cylinder isolates the orifice from the inlet and thereby defines a fluid pathway from the inlet to the outlet that does not extend through the lumen. 2. The oral irrigator of claim 1, wherein the member further includes a groove defined in the outside surface of the member, the orifice being located in the groove. 3. The oral irrigator of claim 1, further comprising an actuator for displacing the member within the valve cylinder and wherein the member comprises a portion that extends through the valve cylinder to couple to the actuator. 4. The oral irrigator of claim 3, wherein the portion of the member is an arm that extends through a longitudinally extending slot in the valve cylinder, and the member is longitudinally displaceable within the valve cylinder. 5. The oral irrigator of claim 1, wherein the first position is proximal to the second position. 6. An oral irrigator comprising: a pump having a generally constant operating speed; a discharge nozzle fed by the pump; and a pressure control located between the pump and the discharge nozzle and including a valve cylinder defining an inlet in fluid communication with the pump and an outlet in fluid communication with the discharge nozzle and a spool axially displaceable within the valve cylinder between a first location and a second location, wherein when the spool is in the first location, a first resulting fluid pathway extending through the valve cylinder between the inlet and the outlet is caused to extend through the spool, and wherein when the spool is in the second location, a second resulting fluid pathway through the valve cylinder between the inlet and outlet has a route that is one or more of shorter in length, wider in diameter, or fewer in number of direction changes than a route of the first resulting fluid pathway. 7. The oral irrigator of claim 6, wherein the spool includes an axially extending lumen, the lumen forming at least a part of the first resulting fluid pathway. 8. The oral irrigator of claim 7, wherein the spool further includes an orifice extending from an outside surface of the spool to the lumen, the orifice forming at least a part of the first resulting fluid. 9. The oral irrigator of claim 7, wherein the spool further includes a groove defined in the outside surface of the spool, the orifice being located in the groove, the groove forming at least a part of the first resulting fluid pathway. 10. The oral irrigator of claim 6, wherein the second resulting fluid pathway does not extend through the spool. 11. An oral irrigator comprising: a pump for supplying a nozzle; and a pressure adjustment assembly including a valve cylinder and a spool displaceable within the valve cylinder, the valve cylinder including an inner surface, an inlet opening defined the inner surface and in fluid communication with the pump, and an outlet in fluid communication with the nozzle, the spool including an outer surface, a lumen and an orifice extending between the outer surface and the lumen, wherein, when the spool is located in a first position within the valve cylinder, a first resulting fluid flow pathway extends through the cylinder between the inlet and outlet via the orifice and lumen, and wherein, when the spool is located in a second position with the valve cylinder, a second resulting fluid flow pathway through the cylinder between the inlet and outlet does not include the orifice and lumen. 12. The oral irrigator of claim 11, wherein the spool includes a groove defined in the outer surface and the first resulting fluid flow pathway extends through the cylinder between the inlet and outlet via groove. 13. The oral irrigator of claim 12, wherein the first fluid flow pathway is at least partially in existence between the groove and the inner surface. 14. The oral irrigator of claim 12, wherein the orifice is located in the groove. 15. The oral irrigator of claim 12, wherein the orifice is located on an opposite side of the spool from the inlet, the groove providing fluid communication between the inlet and the orifice when the spool is in the first position. 16. The oral irrigator of claim 11, wherein the lumen extends axially through the spool. 17. The oral irrigator of claim 11, wherein the lumen daylights at opposite ends of the spool. 18. The oral irrigator of claim 11, wherein inner surface and the outer surface are both generally cylindrical in shape. 19. The oral irrigator of claim 18, wherein the spool further includes a groove defined in the outer surface and in fluid communication with the lumen via the orifice. 20. The oral irrigator of claim 19, wherein the groove extends generally transverse to a longitudinal axis of the spool. 21. An oral irrigator comprising: a pump for supplying a nozzle; and a pressure adjustment assembly comprising a valve cylinder and a spool longitudinally displaceable within the valve cylinder, wherein the spool in a distal position within the valve cylinder causes a fluid flow pathway between an inlet and an outlet of the valve cylinder extending through the valve cylinder to extend through at least a portion of the spool and the spool in a proximal position within the valve cylinder causes the fluid flow pathway between the inlet and the outlet extending through the valve cylinder to not extend through the spool.
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