Dispenser having a roller for squeezing material from a tube
First Claim
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1. A fluid dispenser for use with a source of fluid having a flexible valveless dispensing tube having an open end, comprising:
- (A) a base unit for reception of the source of fluid;
(B) external closure means for normally engaging and closing off the open end of the tube;
(C) said closure means including cam means pivotally carried by said base unit;
(D) a roller assembly engagable with said cam means and being movable into and out of collapsing and dispensing engagement with the tube;
(E) means for moving said roller assembly along said cam means and along the tube toward the open end thereof;
(F) said roller assembly cooperating with said cam means for release of said closure means during at least a portion of the time said roller assembly moves along the tube; and
(G) said roller assembly disengaging said cam means and permitting return of said closure means to its normal position prior to disengagement with the tube.
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Abstract
A fluid dispenser for use with a source of fluid having a flexible, valveless dispensing tube includes a base unit for support of the fluid source and a closure member normally closing off the end of the tube. The dispenser carries a cam and spring assembly which, upon the application of the hand pressure, moves a roller into engagement with the tube and moves the closure member out of engagement with the tube to open the end thereof and permit the fluid to be ejected therefrom.
57 Citations
8 Claims
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1. A fluid dispenser for use with a source of fluid having a flexible valveless dispensing tube having an open end, comprising:
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(A) a base unit for reception of the source of fluid; (B) external closure means for normally engaging and closing off the open end of the tube; (C) said closure means including cam means pivotally carried by said base unit; (D) a roller assembly engagable with said cam means and being movable into and out of collapsing and dispensing engagement with the tube; (E) means for moving said roller assembly along said cam means and along the tube toward the open end thereof; (F) said roller assembly cooperating with said cam means for release of said closure means during at least a portion of the time said roller assembly moves along the tube; and (G) said roller assembly disengaging said cam means and permitting return of said closure means to its normal position prior to disengagement with the tube. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A fluid dispenser for use with a source of fluid having a flexible dispensing tube, comprising:
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(A) a base unit; (B) a cover unit hingedly connected to said base unit; (C) a tube support element carried by said base unit; (D) cam means and closure means connected to one another and pivotally carried by said tube support element with said closure means being normally urged into closing engagement with the exterior of the tube; (E) a push bar assembly pivotally connected to said cover unit; (F) a roller assembly carried by said push bar assembly and movable into and out of engagement with said cam means and collapsing engagement with the tube with said roller assembly being normally urged out of contact with said cam means and collapsing engagement with the tube; (G) said push bar assembly including a roller track for engagement with said roller assembly, (1) whereby movement of said push bar assembly about its point of pivotal connection and toward said base unit results in movement of said roller assembly along said roller track and into engagement with said cam means to release said closure means and into collapsing engagement with the tube to expel the fluid therefrom; and (H) said roller assembly being movable out of engagement with said cam means prior to movement out of collapsing engagement with the tube.
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Specification