Down-lock bellows pump
AssigneeTaplast S.P.A.
InventorRaffaele Zandonà
Life of this patent
Estimating the term…
Abstract
An all-polymer reciprocating pump (100) is contemplated. The pump body (160) receives a sliding insert (170) that may be locked in a down position to minimize the extension and profile of the actuator (120) while the pump (100) is not in use (e.g., for purposes of shipping in e-commerce). Projections (171) slide within guides (181) formed on an insert housing (180). Even in this down locked position, minimal compression is applied to the biasing members (130) so as to avoid fatigue, wear, and/or failure of the plastic components.
Claims13
A dispenser pump capable of being locked in operational and stocking positions without unwanted compression of components, the pump comprising:
- an actuator defining a fluid flow path having an outlet and attached to a top end of a biasing member;
- a closure body including a cylindrical skirt and a central aperture which allows for reciprocating motion of the actuator therethrough;
- a pump body having a sliding insert received within an outer housing fixed to the closure body, the outer housing coaxially receiving portions of the actuator within a pump chamber formed inside the outer housing, the sliding insert positioned above the pump chamber and having an insert housing fixed to the outer housing and a sliding member attached to a bottom end of the biasing member and fitted coaxially within the insert housing;
- and
- wherein guides and stoppers formed on an inner facing of the insert housing cooperate with projections extending radially outward from an outer facing of the sliding member so as to allow the actuator to be selectively locked upwardly in an operable position and locked downwardly in a stocked position without substantial compression of the biasing member.
A dispenser pump capable of being locked in operational and stocking positions without unwanted compression of components, the pump comprising:
- an actuator defining a fluid flow path having an outlet and attached to a top end of a biasing member;
- a closure body including a cylindrical skirt and a central aperture which allows for reciprocating motion of the actuator therethrough;
- a pump body having a sliding insert received within an outer housing fixed to the closure body, the outer housing coaxially receiving portions of the actuator within a pump chamber formed inside the outer housing, the sliding insert positioned above the pump chamber and having an insert housing fixed to the outer housing and a sliding member attached to a bottom end of the biasing member and fitted coaxially within the insert housing;
- and
- wherein guides and stoppers formed on an inner facing of the insert housing cooperate with projections extending radially outward from an outer facing of the sliding member so as to allow the actuator to be selectively locked upwardly in an operable position and locked downwardly in a stocked position without substantial compression of the biasing member;
- and
- wherein ramps are interposed between the guides and stoppers.
A dispenser pump capable of being locked in operational and stocking positions without unwanted compression of components, the pump comprising:
- an actuator defining a fluid flow path having an outlet and attached to a top end of a biasing member;
- a closure body including a cylindrical skirt and a central aperture which allows for reciprocating motion of the actuator therethrough;
- a pump body having a sliding insert received within an outer housing fixed to the closure body, the outer housing coaxially receiving portions of the actuator within a pump chamber formed inside the outer housing, the sliding insert positioned above the pump chamber and having an insert housing fixed to the outer housing and a sliding member attached to a bottom end of the biasing member and fitted coaxially within the insert housing;
- and
- wherein guides and stoppers formed on an inner facing of the insert housing cooperate with projections extending radially outward from an outer facing of the sliding member so as to allow the actuator to be selectively locked upwardly in an operable position and locked downwardly in a stocked position without substantial compression of the biasing member;
- and
- wherein the insert housing is coaxially fitted within the outer housing so as to rest upon annular ledge formed on an inner surface of the outer housing immediately above the pump chamber.
Dependencies are inferred from the claim text.