US3897890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic dispenser
Assignee: Calgon Corp
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Filing: 1974-01-10
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Granted: 1975-08-05
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Expires: 1994-01-10
Abstract
Abstract The invention disclosed is for an automatic dispenser which may be operated in special environments without need for hand touching the dispenser. The dispenser includes a foot-operated pneumatic pump which is in communication with an expandable diaphram. Upon expanding, the expandable diaphram forces a dispensing nozzle engaging plate onto the exit spout of an aerosol container containing a dispensable composition and thereby the contents of the aerosol container are released through the dispensing nozzle.
Inventors
- 👤 Richard Charles Jente
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:46
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/16; B65D83/26; B65D83/267; F; F04; F04B; F04B45/00; F04B45/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
196 words
A dispenser which comprises in combination, a foot-operated pneumatic pump, an expandable diaphram, tubing connecting in fluid communication the foot-operated pneumatic pump and the expandable diaphram, a housing containing the expandable diaphram, a dispensing nozzle engaging plate having a cup-shaped upper configuration containing said diaphram within the housing and movably disposed relative to said diaphram, said housing having notched sections near a lower portion thereof, a wire spring engaging said notched sections and disposed to retain the dispensing nozzle engaging plate within the housing, said plate disposed in contact with an aerosol valve stem engaging member having a passage to receive and dispense material exiting the aerosol valve stem, an aerosol container having an exit valve stem, said aerosol container removably secured to a support surface, the aerosol container being retained to said support surface by a spring biased, vertically disposed clamp having means engaging an upper rim and a lower rim portion of the aerosol container, whereby contents of the aerosol contaiNer are released by depressing the foot-operated pneumatic pump and causing the diaphram to downwardly depress the valve stem by means of the dispensing nozzle engaging plate and the aerosol valve stem engaging member.
Claim 2
Dependent Claim
196 words
A dispenser which comprises in combination, a foot-operated pneumatic pump, an expandable diaphram, tubing connecting in fluid communication the foot-operated pneumatic pump and the expandable diaphram, a housing containing the expandable diaphram, a dispensing nozzle engaging plate having a cup-shaped upper configuration containing said diaphram within the housing and movably disposed relative to said diaphram, said housing having notched sections near a lower portion thereof, a wire spring engaging said notched sections and disposed to retain the dispensing nozzle engaging plate within the housing, said plate disposed in contact with an aerosol valve stem engaging member having a passage to receive and dispense material exiting the aerosol valve stem, an aerosol container having an exit valve stem, said aerosol container removably secured to a support surface, the aerosol container being retained to said support surface by a spring biased, vertically disposed clamp having means engaging an upper rim and a lower rim portion of the aerosol container, whereby contents of the aerosol contaiNer are released by depressing the foot-operated pneumatic pump and causing the diaphram to downwardly depress the valve stem by means of the dispensing nozzle engaging plate and the aerosol valve stem engaging member.
Claim 3
Dependent Claim
24 words
The dispenser of claim 1 wherein a cap is disposed between the upper portion of the aerosol container and the dispensing nozzle engaging plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |