A manually operated vertically reciprocated pump dispenser has a simplified construction with two separate pumps that pump two separate liquids from a container and keep the two separate liquids separated from each other as they are pumped through the dispenser, mixing the liquids for the first time
A manually operated vertically reciprocated pump dispenser has a simplified construction with two separate pumps that pump two separate liquids from a container and keep the two separate liquids separated from each other as they are pumped through the dispenser, mixing the liquids for the first time in a discharge passage of the dispenser just prior to the mixed liquids being discharged from the dispenser. The dispenser has a rotatable sleeve that covers the two pumps and is rotated to lock and unlock a dispenser head that operates the two pumps.
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What is claimed is: 1. A dual liquid dispenser comprising: a pump housing having a first tubular pump chamber and a second tubular pump chamber, the first and second pump chambers being positioned side by side in the pump housing; a pump plunger mounted on the pump housing for reciprocating movemen
What is claimed is: 1. A dual liquid dispenser comprising: a pump housing having a first tubular pump chamber and a second tubular pump chamber, the first and second pump chambers being positioned side by side in the pump housing; a pump plunger mounted on the pump housing for reciprocating movement of the pump plunger relative to the pump housing, the pump plunger having first and second pump pistons mounted in the respective first and second pump chambers for reciprocating movements between upward and downward positions of the first and second pump pistons relative to the respective first and second pump chambers to respectively draw liquid into the first and second pump chambers and discharge the liquid from the first and second pump chambers; a manifold cover overlying the pump plunger, the manifold cover comprising a center cylindrical discharge tube and a divider wall dividing the center cylindrical discharge tube into a first passage and a second passage wherein the first passage is in communication with the first pump chamber and the second passage is in communication with the second pump chamber; and, a sleeve extending around the pump plunger, the sleeve being rotatable around the pump plunger between a locked position and an open position. 2. The dispenser of claim 1, further comprising: the first and second pump pistons being movable relative to the sleeve between the upward and downward positions of the first and second pump pistons. 3. The dispenser of claim 2, further comprising: a dispenser head operatively connected to the first and second pump pistons for movement of the dispenser head with the first and second pump pistons between the upward and downward positions of the first and second pump pistons, and for reciprocating movement of the dispenser head relative to the sleeve during movement of the dispenser head with the first and second pump pistons between the upward and downward positions of the first and second pump pistons. 4. The dispenser of claim 3, further comprising: the sleeve being cylindrical and completely enclosing the pump plunger; and, the dispenser head having a cylindrical sidewall that extends around the sleeve. 5. The dispenser of claim 4, further comprising: a connector cap on the pump housing for attaching the pump housing to a separate liquid container; and, the sleeve being mounted on the connector cap for rotation of the sleeve relative to the connector cap and relative to the dispenser head. 6. The dispenser of claim 1, further comprising: a vent opening in the pump housing; and, the sleeve having a cylindrical wall that is mounted on the pump housing for rotation of the sleeve relative to the pump housing, the sleeve wall being adjacent and covering over the vent opening in the pump housing in at least one position of the sleeve relative to the pump housing. 7. The dispenser of claim 1, further comprising: a connector cap on the pump housing for attaching the pump housing to a separate liquid container; the sleeve being mounted on the connector cap for rotation of the sleeve relative to the connector cap, the sleeve having a wall on the sleeve with an opening through the wall; and, a dispenser head operatively connected to the first and second pump pistons and mounted on the sleeve for reciprocating movement of the dispenser head and the first and second pump pistons relative to the sleeve when the first and second pump pistons move between the upward and downward positions of the first and second pump pistons. 8. The dispenser of claim 7, further comprising: the sleeve being rotatable relative to the dispenser head between a first, locked position and a second, unlocked position of the sleeve relative to the dispenser head; and, a projection on the dispenser head that does not align with the sleeve wall opening and engages with the sleeve wall and prevents the reciprocating movement of the dispenser head relative to the sleeve in the first, locked position of the sleeve relative to the dispenser head, and that aligns with the sleeve wall opening and allows the reciprocating movement of the dispenser head relative to the sleeve in the second, unlocked position of the sleeve relative to the dispenser head. 9. A dual liquid dispenser comprising: a pump housing having a first tubular pump chamber and a second tubular pump chamber, the first and second pump chambers being positioned side by side in the pump housing; a pump plunger mounted on the pump housing for reciprocating movement of the pump plunger relative to the pump housing, the pump plunger having first and second pump pistons mounted in the respective first and second pump chambers for reciprocating movements between upward and downward positions of the first and second pump pistons relative to the respective first and second pump chambers to respectively draw liquid into the first and second pump chambers and discharge the liquid from the first and second pump chambers; a manifold cover overlying the pump plunger. the manifold cover comprising a center cylindrical discharge tube and a divider wall dividing the center cylindrical discharge tube into a first passage and a second passage wherein the first passage is in communication with the first pump chamber and the second passage is in communication with the second pump chamber; a sleeve extending around the pump plunger, the sleeve being rotatable around the pump plunger without moving linearly relative to the first and second pump pistons and relative to the first and second pump chambers; the first and second pump pistons being movable relative to the sleeve between the upward and downward positions of the first and second pump pistons; a dispenser head operatively connected to the manifold cover for movement of the dispenser head with the first and second pump pistons between the upward and downward positions of the first and second pump pistons, and for reciprocating movement of the dispenser head relative to the sleeve during movement of the dispenser head with the first and second pump pistons between the upward and downward positions of the first and second pump pistons; the sleeve and the dispenser head being movable between first, locked relative positions and second, unlocked relative positions; the sleeve having a cylindrical wall and a top wall at one end of the cylindrical wall with a center opening through the top wall; and, the dispenser head having a projection on the dispenser head that engages with the sleeve top wall and prevents the movement of the dispenser head with the first and second pump pistons between the upward and downward positions of the first and second pump pistons when the sleeve and dispenser head are in the first, locked relative positions, and that moves through the sleeve top wall center opening and allows the movement of the dispenser head with the first and second pump pistons between the upward and downward positions of the first and second pump pistons when the sleeve and dispenser head are in the second, unlocked relative positions. 10. The dispenser of claim 9, further comprising: the sleeve being rotatable relative to the dispenser head between the first, locked and the second, unlocked positions of the sleeve and dispenser head. 11. A dual liquid dispenser comprising: a pump housing having a first tubular pump chamber and a second tubular pump chamber positioned side by side; a pump plunger mounted on the pump housing, the pump plunger having first and second pump pistons mounted in the respective first and second pump chambers; a manifold cover overlying the pump plunger, the manifold cover comprising a center cylindrical discharge tube and a divider wall dividing the center cylindrical discharge tube into a first passage and a second passage wherein the first passage is in communication with the first pump chamber and the second passage is in communication with the second pump chamber; a sleeve extending around the pump plunger, the sleeve being rotatable around the pump plunger relative to the first and second pump pistons and relative to the first and second pump chambers, the sleeve having a wall with an opening through the wall; and, a dispenser head operatively connected to the first and second pump pistons and manifold cover and mounted on the sleeve, the dispenser head having a projection on the dispenser head that does not align with the sleeve wall opening and engages with the sleeve wall and prevents the reciprocating movement of the dispenser head relative to the sleeve in a first, locked position of the sleeve relative to the dispenser head, and that aligns with the sleeve wall opening and allows the reciprocating movement of the dispenser head relative to the sleeve in the second, unlocked position of the sleeve relative to the dispenser head. 12. The dispenser of claim 11, further comprising: the dispenser head having a cylindrical sidewall that extends around the sleeve. 13. The dispenser of claim 12, further comprising: a connector cap on the pump housing for attaching the pump housing to the container; and, the sleeve being mounted on the connector cap for rotation of the sleeve relative to the connector cap and relative to the dispenser head. 14. The dispenser of claim 13, further comprising: a vent opening in the pump housing; and, the sleeve having a cylindrical wall that is mounted on the pump housing for rotation of the sleeve relative to the pump housing, the sleeve wall being adjacent and covering over the vent opening in the pump housing in at least one position of the sleeve relative to the pump housing. 15. The dispenser of claim 11, further comprising: the dispenser head having a liquid discharge passage that communicates through the manifold cover with the first and second pump chambers, and the liquid discharge passage is aligned with the sleeve wall opening. 16. The dispenser of claim 15, further comprising: the dispenser head projection being a wall that projects outwardly from the dispenser head liquid discharge passage. 17. A dual liquid dispenser comprising: a pump housing having a first tubular pump chamber and a second tubular pump chamber that are positioned side by side for insertion into a container interior; a pump plunger having first and second pump pistons mounted in the respective first and second pump chambers, a first passage extending through the first pump piston and communicating with the first pump chamber and a second passage extending through the second pump piston and communicating with the second pump chamber; a manifold cover overlying the Dump plunger, the manifold cover comprising a center cylindrical discharge tube and a divider wall dividing the center cylindrical discharge tube into a first manifold passage and a second manifold passage wherein the first manifold passage is in communication with the first passage and the second manifold passage is in communication with the second passage; a cylindrical sleeve extending around the pump plunger and being rotatable around the pump plunger and relative to the first and second pump pistons and the first and second pump chambers, the sleeve having a wall at one end of the sleeve and the wall having an opening; and, a dispenser head mounted on the sleeve for reciprocating movement of the dispenser head over the sleeve, the dispenser head having a discharge passage communicating with both the first and second pump chambers though the respective first and second manifold passages, and the dispenser head being operatively connected to the first and second pump pistons for reciprocating movement of the first and second pump pistons with the dispenser head, the dispenser head and the sleeve being rotatable between first, locked relative positions of the dispenser head and sleeve and second, unlocked relative positions of the dispenser head and sleeve, the dispenser head having a projection on the dispenser head that engages with the sleeve wall and prevents the reciprocating movement of the dispenser head relative to the sleeve in the first, locked positions of the dispenser head and sleeve, and that aligns with the sleeve wall opening and allows the reciprocating movement of the dispenser head relative to the sleeve in the second, unlocked positions of the dispenser head and sleeve. 18. The dispenser of claim 17, further comprising: the dispenser head having a cylindrical sidewall that extends around the sleeve. 19. The dispenser of claim 18, further comprising: a connector cap on the pump housing for attaching the pump housing to the container; and, the sleeve being mounted on the connector cap for rotation of the sleeve relative to the connector cap and relative to the dispenser head. 20. the dispenser of claim 17, further comprising: a vent opening in the pump housing; and, the sleeve having a cylindrical wall that is mounted on the pump housing for rotation of the sleeve relative to the pump housing, the sleeve wall being adjacent and covering over the vent opening in the pump housing in at least one position of the sleeve relative to the pump housing.
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이 특허에 인용된 특허 (9)
Wilder Robert E. (605 N. Tazewell St. Arlington VA 22203), Adjustable pump dispenser.
Lang, Christopher F.; Crapser, James R.; Helf, Thomas A.; Crull, Jeffrey L.; Sparks, Evan A.; Dalton, Jonathan M.; Trettin, David J.; Dodge, Spencer; Lim, Hee Seung, Bottle.
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