CA1279297C - Viscous product dispenser having externally located, dispensed product shearing outlet valve provided with lost-motion action - Google Patents
Viscous product dispenser having externally located, dispensed product shearing outlet valve provided with lost-motion actionInfo
- Publication number
- CA1279297C CA1279297C CA000475258A CA475258A CA1279297C CA 1279297 C CA1279297 C CA 1279297C CA 000475258 A CA000475258 A CA 000475258A CA 475258 A CA475258 A CA 475258A CA 1279297 C CA1279297 C CA 1279297C
- Authority
- CA
- Canada
- Prior art keywords
- valve
- spout
- outlet
- product
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0227—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by an ejection plunger
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
- B65D83/0033—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container the piston being a follower-piston and the dispensing means comprising a hand-operated pressure-device at the opposite part of the container
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
VISCOUS PRODUCT DISPENSER HAVING EXTERNALLY
LOCATED, DISPENSED PRODUCT SHEARING OUTLET
VALVE PROVIDED WITH LOST-MOTION ACTION
Abstract of the Invention The actuating lever of the dispenser has an outlet valve flap integral therewith which moves in a shearing action across the outlet of the discharge spout as the actuator is returned to its standby position such that the returning valve flap cleanly slices through the bead of viscous product adhering to the spout and thus fully separates the dispensed bead of product from that remaining behind in the spout. A lost-motion action permits the valve flap to uncover the spout outlet before further depression of the actuating lever shifts the pumping piston through its dispensing stroke to force product out the spout.
LOCATED, DISPENSED PRODUCT SHEARING OUTLET
VALVE PROVIDED WITH LOST-MOTION ACTION
Abstract of the Invention The actuating lever of the dispenser has an outlet valve flap integral therewith which moves in a shearing action across the outlet of the discharge spout as the actuator is returned to its standby position such that the returning valve flap cleanly slices through the bead of viscous product adhering to the spout and thus fully separates the dispensed bead of product from that remaining behind in the spout. A lost-motion action permits the valve flap to uncover the spout outlet before further depression of the actuating lever shifts the pumping piston through its dispensing stroke to force product out the spout.
Description
VlSCOUS PRODUCT DISPENSER HAVqNG EXTERNALLY
LOCATED, DISPENSED PRODUCT SHEARING OUTLET
yALVE PROVIDED WITH LOST-MOTION ACTION
Technical Field 5This lnvention relates to the field of manually-operated pumping dispenser6 having particular utility for viscous products 6uch as toothpaste and the like.
Background In Canadian Patent 1,233,439 issued March 1, 1988 and assigned to the assignee herein, a viscous product dispenser is disclosed 6howing an actuatlng lever provided with an integral, external valve that opens and closes the discharge outlet of the 6pout. That arrangement has proved to be very attractive in many respects, parti¢ularly where the function of a checking outlet valve is desired that will not interfere with or disrupt the laminar flow of product from the dispenser during the pumping stroke, e.g., where the product being dispensed comprises toothpaste having layers of striping sub6tance carefully laminated therein and whose integrity must be maintained for aesthetic reasons in the bead of product which 18 dispensed from the unit.
It has been found, however, that the "trapdoor-like"
movement of the prior valve during closing tends to cause a quantity of the product to be pressed against the spout and create an unsightly residue. This also tends to cause the aispensed product bead to adhere to the valve and not fully separate from the product remaining within the spout.
Additionally, it has been found that in some cases product is attempted to be pumped out of the spout by the moving pumping piston before such time as the valve flap has adeguately uncovered the outlet.
Summary of the Present Inventipn Accordingly, an important object of the present invention is to improve upon the outlet valve and actuator construction disclosed in said prior application in such a way that the benefits of such prior construction are retained, yet the problems associated with improper cut off of the dispensed C
.
- .
~279297 product and unsightliness at the discharge spout are eliminated, as well as premature pumping action.
Pursuant to the foregoing, the present invention oontemplates constructing and arranging the valve flap and extremity of the spout such that the flap moves across the outlet in a guillotine like shearing action as the flap returns to its closed position. In this respect the valve flap moves through an arcuate path of travel having an axis which coincides with the axis of the arcuate surface at the extremity of the spout, such that the valve flap can move in close, contiguous relationship with the end of the spout during its return movement to cleanly sever the dangling product bead from the spout without in any way striking the spout or otherwise being impeded in its freedom of movement in this respect. Furthermore, the combination actuator and outlet valve unit is mounted on the discharge spout in such a way that the unit has an initial degree of lost motion, sufficient to at least substantially uncover the spout outlet, before such time as further continued depressiQn of the actuator portion of the unit causes the pumping piston to commence its movement through a pumping stroke. Consequently, the valve flap is well removed from the spout outlet as the product begins to emanate from the outlet under the influence of the pumping piston.
Brief Descripti5~ of the Draw~ gs Figure 1 is a vertical cross-sectional view of a dispenser constructed in aocordance with the principles of the present inventlon and showing the actuator thereof in its undepressed, standby position with the spout outlet fully closed by the valve flap portion of the actuator;
Fig. 2 i8 a fragmentary vertical cross sectional view of the dispenser as in Fig. 1 but showing the actuator at the completion of its initial lost-motion travel during which time the valve flap portion of the actuator has at least partially uncovered the spout outlet but depression of the pumping piston has not yet commenced; and Fig. 3 is a fragmentary vertical cross sectional view of the dispenser similAr to Fig. 2 but showing the actuator operated 12~9297 to its fullest extent wherein the pumping piston is fully de-pres6ed.
Detailed De6cri~tion The di6penser 10 includes a tubular, cy~indrical body 12 which i6 open at its lower end 14 to the atmo6phere via an aperture 16 in a decorative closure panel 18 or the like which span6 the lower end 14. A floating pi6ton 20 makes 6ealing engagement with the interior wall surface of the body 12 and has a downwardly and outwardly flaring metal skirt 22 or the like on the bottom thereof which likewi6e engage6 the interior 6urface of body 12. The 6kirt 22 i8 sufficiently resilient that it will deflect downwardly to any extent necessary to permit the piston 20 to rise in the body 12 yet iB at the same time sufficiently stiff a6 to bite into the wall surface during attempted, downward movement of the piston 20 within body 12, thereby preventing such retrograde movement.
The opposite end 24 of the body 12 include6 an upright, centrally dispo6ed sleeve 26 6upported by transversely extending web mean6 28. The 61eeve 26 reciprocably receives the tubular stem 30 of a pumping piston 32 which at its circumferential periphery 6ealingly engages the inner wall surface of the body 12. A passage 34 i6 defined within the tubular stem 30, and the two pi6tons 20 and 32 cooperate with the body 12 to form a pumping ohamber 36 therebetween.
The sleeve 26 al80 parti~lly receives the lower end of a tubular discharge spout 38 whioh itself receives the upper end of the plunger stem 30 and is securely attached thereto. A passage 40 is defined within the spout 38, and a disch~rge outlet 42 is presented at the uppermost end thereof. A coil spring 44 encircles the piston stem 30 and is trapped between the lower extremity of the spout 38 and a lower, in-turned terminus 46 of the 61eeve 26 for the purpo~e of yieldably biasing the pi6ton 32 and the spout 38 toward an upper, undepressed position a6 illustrated in Fig. 1.
The dispenser 10 i6 al60 provided with an actuator unit broadly denoted by the numeral 48 pivotally mounted on a fulcrum 50 on the spout 38. The fulcrum 50 takes the form of a pair of 1;~79Z97 pins pro;ecting laterally from opposite sides of the spout 38, and a pair of legs 52 of the actuator unit 48 (only one leg 52 being illustrated) straddle the spout 38 and rest at their midpoints upon the respective fulcrum pins 50.
The legB 52 pro;ect forwardly at such an angle and to such an extent that they underlie respective ledges 54 on the body 12 adjacent the spout 38. Each of such ledges 54 has a first bottom surface 56 at the outermost extremity thereof which abuttingly engages the opposite side of the proximal leg 52 from the corresponding fulcrum pin 50 when the actuator 48 is in the standby position of Fig. 1, thus cooperating with the fulcrum pins 50 to trap the leg 52 therebetween. Spring pressure from the spring 44 ass sts in this regard, and the geometry is such that the actuator 48 tends to remain up in its Fig. 1 position with the legs 52 projecting downwardly and forwardly 8e that their outermost ends 58 are spaced below a second bottom surface 60 on each of the ledges 54 spaced inwardly from the terminal edge surface 56 thereof. -The actuator 48 includes a finger-engaging portion 62 on one side of the fulcrum pins 50 and a valve flap portion 64 on the opposite side thereof. The flap portion 64 is integrally ~ oined with the finger-engaging portlon 62 by an intermediate web portion 66, the valve flap portion 64 being of su¢h dimension a8 to completely cover and thus close the outlet 42 when the 25 actuator 48 is in its Fig. 1 position.
The surface portion of the ledge 54 presents, in the embodiment ~hown, a surface portlon of the dlspenser most ad~acent the spout outlet 42. It 18 spaced away not only from the outlet 42 but also from the valve (1. e. the valve flap portlon 30 64) to prevent contact between tho valve 64 and the ad~acent surface portlons as the valve 64 moves toward and away from the clo6ed position of Fig. 1.
The outermost surface extremity of the spout 38 at the outlet 42 is transversely arcuate, having a oenter or axis 35 ooinclding with the fulcrum pins 50. Likewise, the valve flap 64 itself, particularly the underside thereof, iB transversely arcuate in complemental relationship with the arcuate surface of 'C
.
., ' the outlet 42. Thus, the exposed 6urface of the outlet 42, the undersurface of the valve flap 64, and the axi6 of pivoting movement of the actuator unit 48 all have center6 or axes which coincide with one another at the fulcrum pin6 50. Preferably, 5 the valve flap 64 i6 8e positioned that its under6urface lightly contact6 the outwardly facing surface of the outlet 42 when the actuator 48 is in its Fig. 1 po6ition.
If desired, the dispenser 10 may be provided with an overcap 68 which snaps down on to the body 12 via interfitting 10 snap beads 70 at the base of the overcap 68. A transverse top wall 72 of the overcap 68 may be disposed to abuttingly engage the upper rear extremity of the valve flap 64 when the latter is in a position fully clo6ing the outlet 42 as illustrated in Fig.
1 for the purpose of supplementing the force of the spring 44 15 tending to keep the valve flap 64 in a closed position.
Qperation The return spring 44 normally maintains the pumping piston 32, the Bpout 38, and the actuator unit 48 in the position of Fig. 1 in which the valve flap 64 tlghtly covers, closes off, and 20 thus seals the outlet 42. After removal of the overcap 68, application of downwardly directed finger pressure to the finger-engaging portion 62 of the actuator 48 will cause the latter to rock downwardly about the fulcrum pins 50 in a clockwise direction, sliding the valve flap 64 off the outlet 42 25 ln the same direction until the condition a6 illustrated in Fig.
LOCATED, DISPENSED PRODUCT SHEARING OUTLET
yALVE PROVIDED WITH LOST-MOTION ACTION
Technical Field 5This lnvention relates to the field of manually-operated pumping dispenser6 having particular utility for viscous products 6uch as toothpaste and the like.
Background In Canadian Patent 1,233,439 issued March 1, 1988 and assigned to the assignee herein, a viscous product dispenser is disclosed 6howing an actuatlng lever provided with an integral, external valve that opens and closes the discharge outlet of the 6pout. That arrangement has proved to be very attractive in many respects, parti¢ularly where the function of a checking outlet valve is desired that will not interfere with or disrupt the laminar flow of product from the dispenser during the pumping stroke, e.g., where the product being dispensed comprises toothpaste having layers of striping sub6tance carefully laminated therein and whose integrity must be maintained for aesthetic reasons in the bead of product which 18 dispensed from the unit.
It has been found, however, that the "trapdoor-like"
movement of the prior valve during closing tends to cause a quantity of the product to be pressed against the spout and create an unsightly residue. This also tends to cause the aispensed product bead to adhere to the valve and not fully separate from the product remaining within the spout.
Additionally, it has been found that in some cases product is attempted to be pumped out of the spout by the moving pumping piston before such time as the valve flap has adeguately uncovered the outlet.
Summary of the Present Inventipn Accordingly, an important object of the present invention is to improve upon the outlet valve and actuator construction disclosed in said prior application in such a way that the benefits of such prior construction are retained, yet the problems associated with improper cut off of the dispensed C
.
- .
~279297 product and unsightliness at the discharge spout are eliminated, as well as premature pumping action.
Pursuant to the foregoing, the present invention oontemplates constructing and arranging the valve flap and extremity of the spout such that the flap moves across the outlet in a guillotine like shearing action as the flap returns to its closed position. In this respect the valve flap moves through an arcuate path of travel having an axis which coincides with the axis of the arcuate surface at the extremity of the spout, such that the valve flap can move in close, contiguous relationship with the end of the spout during its return movement to cleanly sever the dangling product bead from the spout without in any way striking the spout or otherwise being impeded in its freedom of movement in this respect. Furthermore, the combination actuator and outlet valve unit is mounted on the discharge spout in such a way that the unit has an initial degree of lost motion, sufficient to at least substantially uncover the spout outlet, before such time as further continued depressiQn of the actuator portion of the unit causes the pumping piston to commence its movement through a pumping stroke. Consequently, the valve flap is well removed from the spout outlet as the product begins to emanate from the outlet under the influence of the pumping piston.
Brief Descripti5~ of the Draw~ gs Figure 1 is a vertical cross-sectional view of a dispenser constructed in aocordance with the principles of the present inventlon and showing the actuator thereof in its undepressed, standby position with the spout outlet fully closed by the valve flap portion of the actuator;
Fig. 2 i8 a fragmentary vertical cross sectional view of the dispenser as in Fig. 1 but showing the actuator at the completion of its initial lost-motion travel during which time the valve flap portion of the actuator has at least partially uncovered the spout outlet but depression of the pumping piston has not yet commenced; and Fig. 3 is a fragmentary vertical cross sectional view of the dispenser similAr to Fig. 2 but showing the actuator operated 12~9297 to its fullest extent wherein the pumping piston is fully de-pres6ed.
Detailed De6cri~tion The di6penser 10 includes a tubular, cy~indrical body 12 which i6 open at its lower end 14 to the atmo6phere via an aperture 16 in a decorative closure panel 18 or the like which span6 the lower end 14. A floating pi6ton 20 makes 6ealing engagement with the interior wall surface of the body 12 and has a downwardly and outwardly flaring metal skirt 22 or the like on the bottom thereof which likewi6e engage6 the interior 6urface of body 12. The 6kirt 22 i8 sufficiently resilient that it will deflect downwardly to any extent necessary to permit the piston 20 to rise in the body 12 yet iB at the same time sufficiently stiff a6 to bite into the wall surface during attempted, downward movement of the piston 20 within body 12, thereby preventing such retrograde movement.
The opposite end 24 of the body 12 include6 an upright, centrally dispo6ed sleeve 26 6upported by transversely extending web mean6 28. The 61eeve 26 reciprocably receives the tubular stem 30 of a pumping piston 32 which at its circumferential periphery 6ealingly engages the inner wall surface of the body 12. A passage 34 i6 defined within the tubular stem 30, and the two pi6tons 20 and 32 cooperate with the body 12 to form a pumping ohamber 36 therebetween.
The sleeve 26 al80 parti~lly receives the lower end of a tubular discharge spout 38 whioh itself receives the upper end of the plunger stem 30 and is securely attached thereto. A passage 40 is defined within the spout 38, and a disch~rge outlet 42 is presented at the uppermost end thereof. A coil spring 44 encircles the piston stem 30 and is trapped between the lower extremity of the spout 38 and a lower, in-turned terminus 46 of the 61eeve 26 for the purpo~e of yieldably biasing the pi6ton 32 and the spout 38 toward an upper, undepressed position a6 illustrated in Fig. 1.
The dispenser 10 i6 al60 provided with an actuator unit broadly denoted by the numeral 48 pivotally mounted on a fulcrum 50 on the spout 38. The fulcrum 50 takes the form of a pair of 1;~79Z97 pins pro;ecting laterally from opposite sides of the spout 38, and a pair of legs 52 of the actuator unit 48 (only one leg 52 being illustrated) straddle the spout 38 and rest at their midpoints upon the respective fulcrum pins 50.
The legB 52 pro;ect forwardly at such an angle and to such an extent that they underlie respective ledges 54 on the body 12 adjacent the spout 38. Each of such ledges 54 has a first bottom surface 56 at the outermost extremity thereof which abuttingly engages the opposite side of the proximal leg 52 from the corresponding fulcrum pin 50 when the actuator 48 is in the standby position of Fig. 1, thus cooperating with the fulcrum pins 50 to trap the leg 52 therebetween. Spring pressure from the spring 44 ass sts in this regard, and the geometry is such that the actuator 48 tends to remain up in its Fig. 1 position with the legs 52 projecting downwardly and forwardly 8e that their outermost ends 58 are spaced below a second bottom surface 60 on each of the ledges 54 spaced inwardly from the terminal edge surface 56 thereof. -The actuator 48 includes a finger-engaging portion 62 on one side of the fulcrum pins 50 and a valve flap portion 64 on the opposite side thereof. The flap portion 64 is integrally ~ oined with the finger-engaging portlon 62 by an intermediate web portion 66, the valve flap portion 64 being of su¢h dimension a8 to completely cover and thus close the outlet 42 when the 25 actuator 48 is in its Fig. 1 position.
The surface portion of the ledge 54 presents, in the embodiment ~hown, a surface portlon of the dlspenser most ad~acent the spout outlet 42. It 18 spaced away not only from the outlet 42 but also from the valve (1. e. the valve flap portlon 30 64) to prevent contact between tho valve 64 and the ad~acent surface portlons as the valve 64 moves toward and away from the clo6ed position of Fig. 1.
The outermost surface extremity of the spout 38 at the outlet 42 is transversely arcuate, having a oenter or axis 35 ooinclding with the fulcrum pins 50. Likewise, the valve flap 64 itself, particularly the underside thereof, iB transversely arcuate in complemental relationship with the arcuate surface of 'C
.
., ' the outlet 42. Thus, the exposed 6urface of the outlet 42, the undersurface of the valve flap 64, and the axi6 of pivoting movement of the actuator unit 48 all have center6 or axes which coincide with one another at the fulcrum pin6 50. Preferably, 5 the valve flap 64 i6 8e positioned that its under6urface lightly contact6 the outwardly facing surface of the outlet 42 when the actuator 48 is in its Fig. 1 po6ition.
If desired, the dispenser 10 may be provided with an overcap 68 which snaps down on to the body 12 via interfitting 10 snap beads 70 at the base of the overcap 68. A transverse top wall 72 of the overcap 68 may be disposed to abuttingly engage the upper rear extremity of the valve flap 64 when the latter is in a position fully clo6ing the outlet 42 as illustrated in Fig.
1 for the purpose of supplementing the force of the spring 44 15 tending to keep the valve flap 64 in a closed position.
Qperation The return spring 44 normally maintains the pumping piston 32, the Bpout 38, and the actuator unit 48 in the position of Fig. 1 in which the valve flap 64 tlghtly covers, closes off, and 20 thus seals the outlet 42. After removal of the overcap 68, application of downwardly directed finger pressure to the finger-engaging portion 62 of the actuator 48 will cause the latter to rock downwardly about the fulcrum pins 50 in a clockwise direction, sliding the valve flap 64 off the outlet 42 25 ln the same direction until the condition a6 illustrated in Fig.
2 18 reached. During such initial lost-motion movement, the upper edge surfaces 56 of the ledge 54 remaln ln engagement wlth the corresponding legs 58, and the polnt of contact of the legs 58 wlth such surfaces 56 is moved sllghtly along the legs 52 30 toward the outer ends 58 thereof. There is also a very slight, minuscule amount of downward movement of the spout 38 during this time frame sinoe the distance between the fulcrum pins 50 and the surfaces 56 of ledges 54 is increased slightly at this time to permit the outermost ends of the legs 52 to swing upwardly into 35 abutting engagement with the second surfaces 60 of the ledges 54.
As it will be clearly seen in Fig. 2, by the time the outer ends 58 of the legs 52 have swung up to and engaged the 1~79Z97 second surfaces 60, the outlet 42 i8 gubstantially entirely opened by the valve flap 64. Yet, no substantial pumping motion of the pumping picton 32 has occurred.
As depression of the finger-engaging portion 62 then continues, the outer ends 58 of the legs 52 fulcrum against the surfaces 60 as the actuator unit 48 changes its fulcrum point from the pins 50 to the points of engagement of the legs 52 with surfaces 60 of ledges S4. During such time, the pumping piston 32 becomes depressed and the legs 52 move away from the first surfaces S6 until the condition of Fig. 3 is reached, at which timè a full pumping stroke has been completed in one direction.
Thereafter, releaslng flnger pre~sure on the portlon 62 allows the spring 44 to raise the pumping piston 32 and the spout 38 back toward the Fig. 1 posltion thereof, whlle at the same lS time rotating the actuator 48 in a counterclockwlse direction.
8y the time the actuator 48 reaches the position illustrated in Fig. 2, the valve flap 64 will ~ust begin to sllde back over the outlet 42. At this time there wlll be a 6ufficlent amount of spring movement left ln the sprlng 44 to continue to urge the actuator 48 counterclockwise in a lost-motion action a6 the pi6ton 32 substantially comes to a halt.
A6 the valve flap 64 then slide6 downwardly acro6s the I open end of the outlet 42, it ~lices through the bead of product ¦ extending from the 6pout 34 and severs the same in the nature of a guillotine from the product left behind. By the time valve flap 64 is fully returned into covering relationship with the outlet 42, the bead of product has been ¢ompletely di~connected from that remaining within the spout 38 in a neat, clean, and vi6ually plea6ing manner, leaving no clinging unsightly re6idue of any con6equence in and around the outlet 42.
In view of the evacuation of product within the chamber 36 and the clo6ing of the outlet 42 by valve flap 64, the floating piston 20 i6 moved upwardly within the chamber 36 by a corre6ponding amount a6 atmospheric pre66ure is applied against the bottom of the pi6ton 20 via the aperture 16 in the aesthetic end cover 18. In this respect, it will be appreciated that, depending on the nature of the product being dispensèd, the valve C
~;~79297 flap 64 serves in the capacity of a check valve to prevent significant retrograde movement of product back through the spout 38 in an effort to replenlsh that portion of the chamber 36 which ha6 been evacuated durlng the immediately preceding pumping stroke. Conse~uently, the plston 20 18 enabled to float upwardly wlthln the chamber 36 ln the proper manner to decrease the effective volume of the chamber 36 by-the amount of dlscharged product.
It will be appreciated that only a single embodlment of the present lnvention has been disclosed herein. However, various obviou6 modifications to the disclosed embodiment will be apparent to those skilled in the art without departing from the spirit and underlying principles of this invention. Thus, the scope of the present invention should be deemed to include any lS such obvious modification6 a8 may from time to time be made by those skilled in the art.
.' ~ . ` '' - . . . ' ' ~, . ' ' :, , -
As it will be clearly seen in Fig. 2, by the time the outer ends 58 of the legs 52 have swung up to and engaged the 1~79Z97 second surfaces 60, the outlet 42 i8 gubstantially entirely opened by the valve flap 64. Yet, no substantial pumping motion of the pumping picton 32 has occurred.
As depression of the finger-engaging portion 62 then continues, the outer ends 58 of the legs 52 fulcrum against the surfaces 60 as the actuator unit 48 changes its fulcrum point from the pins 50 to the points of engagement of the legs 52 with surfaces 60 of ledges S4. During such time, the pumping piston 32 becomes depressed and the legs 52 move away from the first surfaces S6 until the condition of Fig. 3 is reached, at which timè a full pumping stroke has been completed in one direction.
Thereafter, releaslng flnger pre~sure on the portlon 62 allows the spring 44 to raise the pumping piston 32 and the spout 38 back toward the Fig. 1 posltion thereof, whlle at the same lS time rotating the actuator 48 in a counterclockwlse direction.
8y the time the actuator 48 reaches the position illustrated in Fig. 2, the valve flap 64 will ~ust begin to sllde back over the outlet 42. At this time there wlll be a 6ufficlent amount of spring movement left ln the sprlng 44 to continue to urge the actuator 48 counterclockwise in a lost-motion action a6 the pi6ton 32 substantially comes to a halt.
A6 the valve flap 64 then slide6 downwardly acro6s the I open end of the outlet 42, it ~lices through the bead of product ¦ extending from the 6pout 34 and severs the same in the nature of a guillotine from the product left behind. By the time valve flap 64 is fully returned into covering relationship with the outlet 42, the bead of product has been ¢ompletely di~connected from that remaining within the spout 38 in a neat, clean, and vi6ually plea6ing manner, leaving no clinging unsightly re6idue of any con6equence in and around the outlet 42.
In view of the evacuation of product within the chamber 36 and the clo6ing of the outlet 42 by valve flap 64, the floating piston 20 i6 moved upwardly within the chamber 36 by a corre6ponding amount a6 atmospheric pre66ure is applied against the bottom of the pi6ton 20 via the aperture 16 in the aesthetic end cover 18. In this respect, it will be appreciated that, depending on the nature of the product being dispensèd, the valve C
~;~79297 flap 64 serves in the capacity of a check valve to prevent significant retrograde movement of product back through the spout 38 in an effort to replenlsh that portion of the chamber 36 which ha6 been evacuated durlng the immediately preceding pumping stroke. Conse~uently, the plston 20 18 enabled to float upwardly wlthln the chamber 36 ln the proper manner to decrease the effective volume of the chamber 36 by-the amount of dlscharged product.
It will be appreciated that only a single embodlment of the present lnvention has been disclosed herein. However, various obviou6 modifications to the disclosed embodiment will be apparent to those skilled in the art without departing from the spirit and underlying principles of this invention. Thus, the scope of the present invention should be deemed to include any lS such obvious modification6 a8 may from time to time be made by those skilled in the art.
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Claims (7)
1. In a dispenser for viscous products having an outlet in an outwardly facing end surface of a product discharge spout controlled by an external valve which opens and closes the outlet, said valve being disposed at one end of and movable with an actuating lever which is coupled with means for forcibly discharging product out of the spout when the lever is depressed, the improvement comprising:
means mounting the valve for transverse shearing movement of the latter entirely across the outlet and into closed, covering relationship with said end surface of the spout during return of the valve with the lever at the conclusion of product discharge whereby to promote severance of a dispensed bead of product from that remaining in the spout, said dispenser having its surface portion most adjacent the spout outlet spaced away from the outlet and from the valve to prevent contact between the valve and said surface portions during movement of the valve toward and away from its closed position, said actuating lever being coupled with said discharging means such that said valve is at least substantially uncovered from the outlet by the actuating lever before product is attempted to be discharged by said discharging means.
means mounting the valve for transverse shearing movement of the latter entirely across the outlet and into closed, covering relationship with said end surface of the spout during return of the valve with the lever at the conclusion of product discharge whereby to promote severance of a dispensed bead of product from that remaining in the spout, said dispenser having its surface portion most adjacent the spout outlet spaced away from the outlet and from the valve to prevent contact between the valve and said surface portions during movement of the valve toward and away from its closed position, said actuating lever being coupled with said discharging means such that said valve is at least substantially uncovered from the outlet by the actuating lever before product is attempted to be discharged by said discharging means.
2. In a dispenser as claimed in claim 1, wherein said valve has a leading, product-severing edge retracted out of engagement with and completely uncovering the end surface of the spout when the actuating lever 18 fully depressed.
3. In a dispenser for viscous products having an outlet at an end of a product discharge passage and controlled by an external valve which opens and closes the outlet, the imp comprising:
means mounting the valve for transverse shearing movement of the latter across the outlet during return of the valve to a position closing said outlet whereby to promote severance of a dispensed bead of product from that remaining in the discharge passage, said valve being coupled with a manually engageable actuator for operating the valve, said actuator being coupled with means for discharging product from said outlet when the actuator is operated, said actuator being coupled with said discharging means in such a way that said valve is at least substantially uncovered from the outlet by the actuator before product is attempted to be discharged by said discharging means, said valve and said actuator comprising integrally molded portions of a common unit having leg means projecting therefrom, said discharging means being movable by the actuator and including a fulcrum pin means engaged by said leg means intermediate the opposite ends thereof, said dispenser having a first stationary surface in spaced opposition to said fulcrum pin means and cooperating with the latter in pivotally capturing said leg means therebetween during initial lost-motion movement of the actuator to open said valve, said dispenser further having a second surface spaced from said fulcrum pin means and disposed for fulcruming engagement with the outer end of said leg means during continued movement of the actuator following said lost-motion opening of the valve as the leg means is rocked away from said first surface.
means mounting the valve for transverse shearing movement of the latter across the outlet during return of the valve to a position closing said outlet whereby to promote severance of a dispensed bead of product from that remaining in the discharge passage, said valve being coupled with a manually engageable actuator for operating the valve, said actuator being coupled with means for discharging product from said outlet when the actuator is operated, said actuator being coupled with said discharging means in such a way that said valve is at least substantially uncovered from the outlet by the actuator before product is attempted to be discharged by said discharging means, said valve and said actuator comprising integrally molded portions of a common unit having leg means projecting therefrom, said discharging means being movable by the actuator and including a fulcrum pin means engaged by said leg means intermediate the opposite ends thereof, said dispenser having a first stationary surface in spaced opposition to said fulcrum pin means and cooperating with the latter in pivotally capturing said leg means therebetween during initial lost-motion movement of the actuator to open said valve, said dispenser further having a second surface spaced from said fulcrum pin means and disposed for fulcruming engagement with the outer end of said leg means during continued movement of the actuator following said lost-motion opening of the valve as the leg means is rocked away from said first surface.
4. A dispenser for viscous products comprising:
a generally tubular body provided with a discharge spout at one end thereof;
a pumping piston disposed within the body and secured to said spout for reciprocal movement of the spout and the piston together relative to the body during pumping strokes, said piston being tubular and cooperating with the spout to define a discharge passage for product from the interior of the body;
a take-up piston initially disposed at the opposite end of the body and movable within the latter only in a direction toward the pumping piston for progressively advancing the mass of product within the body toward the pumping piston following each discharge of the product;
a combination actuator and outlet valve unit pivotally mounted on said spout externally of the latter, said unit being initially pivotal by the manual movement of an actuator portion thereof through a lost-motion segment of travel from a first position in which a valve portion of the unit closes the outlet of the spout to a second position in which said valve portion at least substantially uncovers the outlet without significant operation of said pumping piston, and thence being further pivotal by said actuator portion to a third position by which the pumping piston is operated to force product from the body; and means operably associated with said unit for yieldably biasing the same toward said first position and said pumping piston to an unoperated disposition.
a generally tubular body provided with a discharge spout at one end thereof;
a pumping piston disposed within the body and secured to said spout for reciprocal movement of the spout and the piston together relative to the body during pumping strokes, said piston being tubular and cooperating with the spout to define a discharge passage for product from the interior of the body;
a take-up piston initially disposed at the opposite end of the body and movable within the latter only in a direction toward the pumping piston for progressively advancing the mass of product within the body toward the pumping piston following each discharge of the product;
a combination actuator and outlet valve unit pivotally mounted on said spout externally of the latter, said unit being initially pivotal by the manual movement of an actuator portion thereof through a lost-motion segment of travel from a first position in which a valve portion of the unit closes the outlet of the spout to a second position in which said valve portion at least substantially uncovers the outlet without significant operation of said pumping piston, and thence being further pivotal by said actuator portion to a third position by which the pumping piston is operated to force product from the body; and means operably associated with said unit for yieldably biasing the same toward said first position and said pumping piston to an unoperated disposition.
5. A dispenser as claimed in claim 4, wherein said valve portion of the unit is disposed for shearing movement across said outlet during lost-motion return of the unit from said second position to said first position, whereby to promote effective severance of a discharged bead of the product from that product remaining behind in the spout.
6. A dispenser as claimed in claim 5, wherein said unit has a leg projecting therefrom, said spout having a fulcrum pin pivotally engaged by said leg intermediate the opposite ends thereof, said container having a first stationary surface in spaced opposition to said fulcrum pin and cooperating with the latter to pivotally capture said leg therebetween during initial lost-motion movement of the unit to open said valve portion, said container further having a second surface spaced from said fulcrum pin and disposed for fulcruming engagement with the outer end of said leg during continued movement of the unit following said lost-motion opening of the valve portion as the leg is rocked away from said first surface.
7. In a dispenser for viscous products having an outlet in an outwardly facing end surface of a product discharge spout controlled by an external valve which opens and closes the outlet, said valve being disposed at one end of and movable with an actuating lever which is coupled with means for forcibly discharging product out of the spout when the lever is depressed, the improvement comprising:
means mounting the valve for transverse shearing movement of the latter entirely across the outlet and into closed, covering relationship with said end surface of the spout during return of the valve with the lever at the conclusion of product discharge whereby to promote severance of a dispensed bead of product from that remaining in the spout, said valve having a leading, product severing edge retracted out of engagement with and completely uncovering the end surface of the spout when the actuating lever is fully depressed, said dispenser having its surface portions most adjacent the spout outlet spaced away from the outlet and from the valve to prevent contact between the valve and said surface portions during movement of valve toward and away from its closed position, said actuating lever being coupled with said discharging means such that said valve is at least substantially uncovered from the outlet by the actuating lever before product is attempted to be discharged by said discharging means.
means mounting the valve for transverse shearing movement of the latter entirely across the outlet and into closed, covering relationship with said end surface of the spout during return of the valve with the lever at the conclusion of product discharge whereby to promote severance of a dispensed bead of product from that remaining in the spout, said valve having a leading, product severing edge retracted out of engagement with and completely uncovering the end surface of the spout when the actuating lever is fully depressed, said dispenser having its surface portions most adjacent the spout outlet spaced away from the outlet and from the valve to prevent contact between the valve and said surface portions during movement of valve toward and away from its closed position, said actuating lever being coupled with said discharging means such that said valve is at least substantially uncovered from the outlet by the actuating lever before product is attempted to be discharged by said discharging means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58964084A | 1984-03-14 | 1984-03-14 | |
| US06/589,640 | 1984-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1279297C true CA1279297C (en) | 1991-01-22 |
Family
ID=24358867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000475258A Expired - Lifetime CA1279297C (en) | 1984-03-14 | 1985-02-27 | Viscous product dispenser having externally located, dispensed product shearing outlet valve provided with lost-motion action |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH0829790B2 (en) |
| AU (1) | AU574439B2 (en) |
| CA (1) | CA1279297C (en) |
| DE (1) | DE3507355A1 (en) |
| FR (1) | FR2561230B1 (en) |
| GB (1) | GB2157372B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2000920A6 (en) * | 1985-07-18 | 1988-04-01 | Guala Angelo Spa | A dispenser of generic paste products and specifically toothpaste. |
| DE3601311A1 (en) * | 1986-01-17 | 1987-07-23 | Joachim Czech | DISPENSER FOR PASTOESE PRODUCTS |
| AU574564B2 (en) * | 1986-02-21 | 1988-07-07 | Realex Corp. | Viscous product dispenser |
| US5000355A (en) * | 1986-07-30 | 1991-03-19 | Beecham Inc. | Pump dispenser |
| DE3710496A1 (en) * | 1987-03-30 | 1988-10-13 | Raimund Andris | PASTE DISPENSER |
| GB2204099B (en) * | 1987-04-29 | 1991-04-24 | Metal Box Plc | Pump chamber dispenser |
| US4793522A (en) * | 1987-06-15 | 1988-12-27 | Calmar, Inc. | Positive discharge valve for viscous product dispenser |
| FR2627460B1 (en) * | 1988-02-19 | 1990-06-29 | Cebal | DISPENSER FOR PASTY PRODUCT COMPRISING A SIDE DISPENSING AXIAL PUSH-BUTTON AND A MASKING ELEMENT OF ITS OUTPUT PORT |
| DE3837704C2 (en) * | 1988-11-07 | 1994-03-24 | Andris Raimund Gmbh & Co Kg | Paste dispenser |
| EP0577907B1 (en) * | 1992-07-01 | 1996-01-31 | GUALA S.p.A. | Self sealing closure for a flexible container |
| TW589504B (en) | 1997-06-12 | 2004-06-01 | Sharp Kk | Liquid crystal display device |
| KR100354906B1 (en) | 1999-10-01 | 2002-09-30 | 삼성전자 주식회사 | A wide viewing angle liquid crystal display |
| DE20203473U1 (en) | 2002-03-05 | 2003-04-17 | Rpc Wiko Gmbh & Co Kg | Dispenser for flowable products with spherically encapsulated components |
| ES2221539B1 (en) * | 2002-10-02 | 2006-07-01 | Ernesto Antelo Pensado | ARTICULATED PLUG. |
| US7757900B2 (en) | 2003-11-04 | 2010-07-20 | Rpc Wiko Gmbh | Dispenser pump |
| WO2005107961A1 (en) * | 2004-05-12 | 2005-11-17 | Teais, S.A. | Articulated cap for the application of viscous fluids |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB364864A (en) * | ||||
| DE126818C (en) * | ||||
| GB395822A (en) * | 1932-04-02 | 1933-07-27 | Heinrich Dreuw | Improvements in or relating to closures for bottles, jars, and the like |
| GB409828A (en) * | 1932-12-23 | 1934-05-10 | Archibald James Graham | Improvements in and relating to devices for delivering materials of a soapy or greasy consistency |
| US2041488A (en) * | 1934-06-22 | 1936-05-19 | Emmett E Robinson | Material container |
| DE650821C (en) * | 1936-07-16 | 1937-10-02 | Spiekenheuer Geb | Mustard container with a pressure piston and a hollow piston rod with an outlet opening at the outer end |
| GB750160A (en) * | 1953-04-23 | 1956-06-13 | Thomas Eastham & Son Ltd | Improvements in or relating to devices or appliances for use in applying to surfacesglue and other viscous substances |
| US2755967A (en) * | 1955-09-21 | 1956-07-24 | Jack C Anderson | Dispensing device |
| US3217933A (en) * | 1963-12-18 | 1965-11-16 | Jr Cornelius B Watson | Tube squeezer and nozzle therefor |
| US3870200A (en) * | 1973-05-14 | 1975-03-11 | Spatz Corp | Valveless dispenser for fluent masses |
| DE2611644A1 (en) * | 1976-03-19 | 1977-09-29 | Henkel & Cie Gmbh | CONTAINER FOR COSMETICS |
| DE3104726A1 (en) * | 1981-02-11 | 1982-08-12 | Vereinigte Deutsche Metallwerke Ag, 6000 Frankfurt | Packaging container for viscous and pasty contents |
| DE3201356A1 (en) * | 1982-01-19 | 1983-07-28 | Aerosol Techniek Nederland B.V., 1402 Bussum | Dispenser for pasty products |
| EP0084638B1 (en) * | 1982-01-19 | 1987-12-23 | Gap Gesellschaft Für Auswertungen Und Patente Ag | Dispenser for pasty products |
| GB2127494B (en) * | 1982-08-18 | 1986-02-26 | Kwaun Peng Koh | Portable dispenser for semi-solids |
| JPS60110667A (en) * | 1983-11-09 | 1985-06-17 | 白井 道雄 | Vessel for pasty substance |
| US4691847A (en) * | 1983-12-27 | 1987-09-08 | Realex Corporation | Pasty product dispenser having combination actuator and outlet valve |
-
1985
- 1985-01-25 JP JP60012332A patent/JPH0829790B2/en not_active Expired - Lifetime
- 1985-02-27 CA CA000475258A patent/CA1279297C/en not_active Expired - Lifetime
- 1985-03-01 DE DE19853507355 patent/DE3507355A1/en active Granted
- 1985-03-04 AU AU39447/85A patent/AU574439B2/en not_active Expired
- 1985-03-04 GB GB08505457A patent/GB2157372B/en not_active Expired
- 1985-03-14 FR FR8503770A patent/FR2561230B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AU3944785A (en) | 1985-09-19 |
| GB8505457D0 (en) | 1985-04-03 |
| JPS60193875A (en) | 1985-10-02 |
| FR2561230B1 (en) | 1991-02-01 |
| GB2157372A (en) | 1985-10-23 |
| DE3507355A1 (en) | 1985-10-10 |
| GB2157372B (en) | 1988-01-13 |
| FR2561230A1 (en) | 1985-09-20 |
| JPH0829790B2 (en) | 1996-03-27 |
| DE3507355C2 (en) | 1990-08-02 |
| AU574439B2 (en) | 1988-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |