1. A geared feed pump, comprising
a housing (10, 12) in which a pump chamber (14) is formed,
a rotationally driven pair of gear wheels (16, 18) meshing with one another disposed in the pump chamber (14) which gear wheels pump a pumping medium out of a suction chamber (44) along feed conduits (48), formed between the circumferential surface of the gear wheels (16, 18) and the circumferential walls of the pump chamber (14), into a pressure chamber (46), and
a drive shaft (30) which is connected in a rotationally engaged manner with one of the gear wheels (16) via a coupling member (40) disposed inside the housing (10, 11) in a coupling chamber (41), and
a connection (32, 54, 56) communicating the coupling chamber (41) with the pressure chamber (46),
further comprising a pressure valve (60) disposed in the connection (32, 54, 56) communicating the coupling chamber (41) with the pressure chamber (46), which
pressure valve keeps the connection closed until a predetermined opening pressure in the pressure chamber (46) is exceeded,
wherein the pressure valve (60) comprising a radially resilient sleeve (62) fastened in a bore (32) of a housing part (10), and a connecting bore (56) to the pressure chamber (46) discharging into the bore (32) at the jacket of the sleeve (62).
2. The geared feed pump of claim 1, wherein the sleeve (62) has at least one longitudinal slit (64).
3. The geared feed pump of claim 2, wherein the bore (32) is a blind bore, into which one end of the drive shaft (30) protrudes.
4. The geared feed pump of claim 1, wherein the bore (32) is a blind bore, into which one end of the drive shaft (30) protrudes.
5. A geared feed pump, comprising
a housing (10, 12) in which a pump chamber (14) is formed,
a rotationally driven pair of gear wheels (16, 18) meshing with one another disposed in the pump chamber (14) which gear wheels pump a pumping medium out of a suction chamber (44) along feed conduits (48), formed between the circumferential surface of the gear wheels (16, 18) and the circumferential walls of the pump chamber (14), into a pressure chamber (46), and
a drive shaft (30) which is connected in a rotationally engaged manner with one of the wheels (16) via a coupling member (40) disposed inside the housing (10, 11) in a coupling chamber (41), and
a connection (32, 54, 56) communicating the coupling chamber (41) with the pressure chamber (46),
wherein the connection (32, 54, 56) communicating the coupling chamber (41) with the pressure chamber (46) comprises at least one throttle restriction (58),
further comprising a pressure valve (60) disposed in the connection (32, 54, 56) communicating of the coupling chamber (41) with the pressure chamber (46), which pressure valve keeps the connection closed until a predetermined opening pressure in the pressure chamber (46) is exceeded.
6. The geared feed pump of claim 5, wherein the pressure valve (60) comprising a radially resilient sleeve (62) fastened in a bore (32) of a housing part (10), and a connecting bore (56) to the pressure chamber (46) discharging into the bore (32) at the jacket of the sleeve (62).
7. The geared feed pump of claim 6, wherein the sleeve (62) has at least one longitudinal slit (64).
8. The geared feed pump of claim 7, wherein the bore (32) is a blind bore, into which one end of the drive shaft (30) protrudes.
9. The geared feed pump of claim 6, wherein the bore (32) is a blind bore, into which one end of the drive shaft (30) protrudes.
10. The geared feed pump of claim 5, wherein the pressure valve (60) comprises a radially resilient ring (72) that is fastened in an annular groove (76) in a bore (32) of a housing part (10), and a connecting bore (56) to the pressure chamber (46) discharging into the annular groove (76).
11. The geared feed pump of claim 10, further comprising a support element (78) inserted into the bore (32) and securing the element the ring (72) in the axial direction against escaping from the annular groove (76).
12. The geared feed pump of claim 11, wherein the bore (32) is a blind bore, into which one end of the drive shaft (30) protrudes.
13. The geared feed pump of claim 10, wherein the bore (32) is a blind bore, into which one end of the drive shaft (30) protrudes.
14. A geared feed pump, comprising
a housing (10, 12) in which a pump chamber (14) is formed,
a rotationally driven pair of gear wheels (16, 18) meshing with one another disposed in the pump chamber (14) which gear wheels pump a pumping medium out of a suction chamber (44) along feed conduits (48), formed between the circumferential surface of the gear wheels (16, 18) and the circumferential walls of the pump chamber (14), into a pressure chamber (46), and
a drive shaft (30) which is connected in a rotationally engaged manner with one of the gear wheels (16) via a coupling member (40) disposed inside the housing (10, 11) in a coupling chamber (41), and
a connection (32, 54, 56) communicating the coupling chamber (41) with the pressure chamber (46),
further comprising a pressure valve (60) disposed in the connection (32, 54, 56) communicating the coupling chamber (41) with the pressure chamber (46), which pressure valve keeps the connection closed until a predetermined opening pressure in the pressure chamber (46) is exceeded,
wherein the pressure valve (60) comprises a radially resilient ring (72) that is fastened in an annular groove (76) in a bore (32) of a housing part (10), and a connecting bore (56) to the pressure chamber (46) discharging into the annular groove (76).
15. The geared feed pump of claim 14, further comprising a support element (78) inserted into the bore (32) and securing the element the ring (72) in the axial direction against escaping from the annular groove (76).
16. The geared feed pump of claim 15, wherein the bore (32) is a blind bore, into which one end of the drive shaft (30) protrudes.
17. The geared feed pump of claim 14, wherein the bore (32) is a blind bore, into which one end of the drive shaft (30) protrudes.
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 method for enhancing the deposition of benefit agents which comprises topically administering to a human or animal a composition comprised of:
a) a delivery system comprised of
i) at least two cationic conditioning compounds selected from the group consisting of guar hydroxypropyltrimonium chloride, acrylaminopropyltrimonium chlorideacrylamide copolymer, and mixtures thereof;
ii) at least one water soluble silicone compound comprised of silicone quaternium-13; and
b) an effective amount of a benefit agent to a desired location on the skin, hair, andor nails.
2. The method of claim 1 wherein the benefit agent is elubiol, shale oil and derivatives thereof, 6-(1-piperidinyl)-2,4-pyrimidinediamine-3-oxide, finasteride, ketoconazole, salicylic acid, zinc pyrithione, coal tar, benzoyl peroxide, selenium sulfide, hydrocortisone, sulfur, menthol, pramoxine hydrochloride, tricetylammonium chloride, polyquaternium 10, panthenol, panthenol triacetate, vitamin A and derivatives thereof, vitamin B and derivatives thereof, vitamin C and derivatives thereof, vitamin D and derivatives thereof, vitamin E and derivatives thereof, vitamin K and derivatives thereof, keratin, lysine, arginine, hydrolyzed wheat proteins, hydrolyzed silk proteins, octyl methoxycinnamate, oxybenzone, minoxidil, titanium dioxide, zinc dioxide, retinol, erthromycin, tretinoin, and mixtures thereof.
3. The method of claim 1 wherein the composition is further comprised of a detergent.
4. A method for depositing a thin coating of conditioner on a hair fiber, comprised of:
a) topically applying an effective amount of a delivery system composition comprised of
i) at least two cationic conditioning compounds selected from the group consisting of guar hydroxypropyltrimonium chloride, acrylaminopropyltrimonium chlorideacrylamide copolymer, and mixtures thereof;
ii) at least one water soluble silicone compound comprised of cetyl triethylmonium dimethicone copolyol phthalate; and
iii) a hydrophilic benefit agent to a desired location on the hair of a human or animal.