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US 5,180,109 AGranted
Single use spray dispensing assembly
AssigneeMinnesota Mining and Manufacturing Company
InventorsNeil J. Schwartzbauer, Douglas J. Laska
Life of this patent
Estimating the term…
Abstract
A disposable spray dispensing assembly for liquid materials includes a container that comprises an aerosol can, and a spray head initially detached from the container. A cap is connected to the container and includes a central recess extending into the chamber and presenting a hole. A tube within the chamber is connected to a cylindrical wall surrounding the recess. The cap is non-releasably connected to the container and hinders refilling of the chamber in order to reduce the likelihood that the chamber might contain a material different than the contents indicated on the container's label.
Claims19
A spray dispensing assembly for liquid materials comprising:
- a container having a chamber with an opening;
- a captive cap non-releasably connected to said container and extending across said opening, said captive cap including a hole;
- a spray head having a first inlet with a connection for detachable joining with a source of pressurized air, a second inlet for liquid material and an outlet for discharging a spray of liquid material;
- a coupling for coupling said second inlet of said spray head to said hole of said captive cap, said coupling including a threaded portion complemental to said threads of said captive cap for securing said spray head to said container;
- and
- a tube in said chamber, said tube having a first end portion located in said chamber at a position remote from said captive cap, said tube having a second end portion fixed to said captive cap next to said hole for communication with said second inlet of said spray head.
3 more elements
A spray dispensing assembly for liquid materials comprising:
- a container having a chamber with an opening;
- a captive cap non-releasably connected to said container and extending across said opening, said captive cap including a hole;
- a spray head having a first inlet with a connection for detachable joining with a source of pressurized air, a second inlet for liquid material and an outlet for discharging a spray of liquid material and an outlet for discharging a spray of liquid material;
- a coupling for coupling said second inlet of said spray head to said hole of said captive cap;
- and
- a tube of said chamber said tube having a first end portion located in said chamber at a position remote from said captive cap, said tube having a second end portion fixed to said captive cap next to said hole for communication with said second inlet of said spray head, wherein said captive cap includes a recess having a vent located in said recess, wherein said recess includes threads, and wherein said vent extends through said threads.
3 more elements
A spray dispensing combination for liquid materials comprising:
- a container having a chamber for containing a quantity of liquid material;
- an outlet hole leading to said chamber for withdrawing liquid material from said chamber;
- a vent for communicating said chamber with the atmosphere;
- a spray head having a first inlet for communication with a source of pressurized air, a second inlet for liquid material and an outlet for discharging a spray of liquid material;
- a coupling for coupling said second inlet of said spray head to said hole;
- and
- means for selectively closing said hole when said second inlet of said spray head is not connected to said hole, said means including structure for covering said vent when said hole is closed, wherein said means comprises a plug.
4 more elements
A spray dispensing combination for liquid materials comprising:
- a container having a chamber;
- a coupling having threads connected to said container;
- a vent extending through said threads for communicating said chamber with the atmosphere;
- a plug having threads complemental to said threads connected to said container, said threads of said plug being of a length sufficient to cover said vent when said threads of said plug are fully threaded into said threads connected to said container;
- and
- a spray head having a tubular body with a threaded portion complemental to said threads connected to said container, said threaded portion being of a length less than the threads of said plug and spaced from said vent when said threaded portion is fully threaded into said threads connected to said container.
3 more elements
A spray dispensing combination for liquid material comprising:
- a container having a chamber for containing a quantity of liquid material;
- a neck connected to said container, said neck having threads and an outlet hole leading to said chamber for withdrawing liquid material from said chamber, said neck having a vent extending through said threads for communicating said chamber with the atmosphere;
- a spray head having a first inlet for communication with a source of pressurized air, a second inlet for liquid material and an outlet for discharging a spray of liquid material,
- said spray head including a threaded portion complemental to said threads of said neck for coupling said second inlet of said spray head to said hole, said threaded portion being spaced from said vent to enable said chamber to communicate with the atmosphere when said threaded portion is fully threaded onto said threads of said neck;
- and
- means for selectively closing said hole when said second inlet of said spray head is not connected to said hole, said means including threads complemental to said threads of said neck and covering said vent when said hole is closed.
3 more elements
Dependencies are inferred from the claim text.