Liquid soap dispensing system
First Claim
1. A soap cartridge for a liquid soap dispensing system including a housing and a discharge mechanism carried thereby for movement between a normal rest configuration and an actuating configuration for dispensing repeated doses of liquid soap, said soap cartridge having a wall, a receptacle having an aperture therein positioned in the wall of the soap cartridge, a plastic filter in sliding contact within said receptacle and having a sealing mechanism connected to said filter movable between a sealing position wherein said sealing mechanism seals said aperture and a filtering position wherein said sealing mechanism is away from said aperture and said filter establishes an air path between the inside and outside of said soap cartridge, said filter being compressed within and by said receptacle such that upon repeated dispensing of doses of liquid soap from the cartridge, a vacuum which results therefrom inside said cartridge does not exceed 12" of water.
1 Assignment
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Accused Products
Abstract
A liquid soap dispenser for dispensing repeated doses of liquid soap from an associated cartridge with a compressible outlet nipple without collapsing the side walls of the cartridge, the cartridge includes a blow molded thin walled plastic container with an externally threaded neck for connection to the compressible nipple and a wall. A receptacle is positioned in the wall of the cartridge having an aperture therein, and a plastic filter is in the receptacle having a sealing mechanism connected thereto movable between a sealing position wherein the sealing mechanism seals the aperture and a filtering position wherein the sealing mechanism is away from the aperture and the filter is in contact with the aperture establishing an air path between the inside and outside of the cartridge. The filter having an average pore diameter of about 0.25 microns and is compressed within the receptacle such that upon repeated activation of said pump member the vacuum inside said cartridge does not exceed 12" of water.
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Citations
13 Claims
- 1. A soap cartridge for a liquid soap dispensing system including a housing and a discharge mechanism carried thereby for movement between a normal rest configuration and an actuating configuration for dispensing repeated doses of liquid soap, said soap cartridge having a wall, a receptacle having an aperture therein positioned in the wall of the soap cartridge, a plastic filter in sliding contact within said receptacle and having a sealing mechanism connected to said filter movable between a sealing position wherein said sealing mechanism seals said aperture and a filtering position wherein said sealing mechanism is away from said aperture and said filter establishes an air path between the inside and outside of said soap cartridge, said filter being compressed within and by said receptacle such that upon repeated dispensing of doses of liquid soap from the cartridge, a vacuum which results therefrom inside said cartridge does not exceed 12" of water.
- 6. A liquid soap dispenser and associated cartridge which can be assembled without the use of fastening means, the cartridge having side walls with a compressible outlet nipple for dispensing repeated doses of liquid soap without collapsing the side walls, said dispenser comprising a housing member adapted to receive the associated cartridge with the nipple, a pump member freely receivable in said housing member and movable therein between a pumping position for compressing the nipple to discharge liquid soap therefrom and a release position out of engagement with the nipple, a handle member carried by said housing member in a supported condition for engagement with said pump member, said handle member in its supported condition being pivotally movable between an actuating position for driving said pump member to its pumping position and a retracted position for accommodating movement of said pump member to its release position, said pump member and said handle member cooperating when engaged to retain said handle member in its supported condition, and a bias unit engageable with said housing member and said pump member for resiliently urging said pump member to its release position and into engagement with said handle member, thereby to urge said handle member to its retracted position, said cartridge including a blow molded thin walled plastic container with an externally threaded neck for connection to the compressible nipple and, front and rear walls interconnecting said side walls, a receptacle positioned in one of the walls of the cartridge having an aperture therein, a plastic filter in said receptacle having a sealing mechanism connected thereto axially movable between a sealing position wherein said sealing mechanism seals said aperture and a filtering position wherein said sealing mechanism is away from said aperture and said filter is in contact with said aperture, said plastic filter being compressed within and by the receptacle and establishing an air path between the inside and outside of said cartridge, said filter having an average pore diameter of about 0.25 microns such that upon repeated activation of said pump member a vacuum is formed inside said cartridge and does not exceed 12" of water.
- 9. A cartridge comprising a blow molded thin walled plastic container with a parallelepiped body portion having a rear wall and an externally threaded cylindrical neck extending therefrom, a receptacle having an aperture therein positioned in a wall of the cartridge, a plastic filter in said receptacle and compressed thereby, said plastic filter having a sealing mechanism connected thereto axially movable between a sealing position wherein said sealing mechanism seals said aperture and a filtering position wherein said sealing mechanism is away from said aperture and said filter is in contact with said aperture establishing an air path between the inside and outside of said cartridge, said filter being compressed within said receptacle.
Specification