Patent US5766203A successfully refreshed from Google Patents.
US4101057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trigger actuated pump
Assignee: SPECIALTY ACQUISITION Corp A CORP OF DELAWARE
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Filing: 1976-12-02
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Granted: 1978-07-18
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Expires: 1996-12-02
Abstract
Abstract A manually actuated trigger pump is adapted to be fitted on the neck of a container for dispensing a liquid therefrom. The pump includes a main housing with a trigger connected thereto, a flexible bladder which fits in the housing and is engagable by the trigger, and a nozzle which is attached to the housing. The trigger engages the bladder to pump fluid from the bladder outwardly through the nozzle.
Inventors
- 👤 Lewis C. LoMaglio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0018; B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1028; B05B11/1029; B05B11/103; B05B11/1042; B05B11/1064; F04B43/08; F04B53/00; F04B53/10; F04B53/109; F04B53/1092; G; G01; G01F; G01F11/00; G01F11/02; G01F11/08; G01F11/088; B05B11/0005; B05B11/0037; B05B11/0039; B05B11/0044
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
228 words
A manually operable liquid dispensing pump for use and incorporation on a container for a liquid to be dispensed comprising, in combination: a. tubular bladder means having flexible walls which expand to their natural profile when depressed and relaxed, said bladder means having an upstream end and a downstream end, said downstream end having an integrally molded one-way valve means that permits fluid to flow outwardly from said bladder means, said upstream end of said bladder means being open to permit fluid to flow into said bladder means, b. a one-piece, integrally molded housing means having: i. cavity means for receiving and containing said bladder means, ii. channel means communicating with said cavity means, said channel means being located substantially adjacent to said upstream end of said bladder means and between said upstream end and said downstream end of said bladder means when said bladder means is received in said cavity means, said upstream end of said bladder means sealing one end of said channel means to prevent fluids from entering said cavity means from said channel means when said bladder means is in a depressed position or in its natural profile, and permitting fluids to enter said bladder means while said bladder means is expanding to its natural profile, and c. trigger means connected to said housing means for depressing said bladder means to pump fluids therefrom.
Claim 2
Dependent Claim
228 words
A manually operable liquid dispensing pump for use and incorporation on a container for a liquid to be dispensed comprising, in combination: a. tubular bladder means having flexible walls which expand to their natural profile when depressed and relaxed, said bladder means having an upstream end and a downstream end, said downstream end having an integrally molded one-way valve means that permits fluid to flow outwardly from said bladder means, said upstream end of said bladder means being open to permit fluid to flow into said bladder means, b. a one-piece, integrally molded housing means having: i. cavity means for receiving and containing said bladder means, ii. channel means communicating with said cavity means, said channel means being located substantially adjacent to said upstream end of said bladder means and between said upstream end and said downstream end of said bladder means when said bladder means is received in said cavity means, said upstream end of said bladder means sealing one end of said channel means to prevent fluids from entering said cavity means from said channel means when said bladder means is in a depressed position or in its natural profile, and permitting fluids to enter said bladder means while said bladder means is expanding to its natural profile, and c. trigger means connected to said housing means for depressing said bladder means to pump fluids therefrom.
Claim 3
Dependent Claim
19 words
The pump of claim 1 wherein nozzle means is located in said cavity means downstream from said bladder means.
Claim 4
Dependent Claim
21 words
The pump of claim 1 wherein said housing means has a lower tapered end means which is connectable to closure means.
Claim 5
Dependent Claim
13 words
The pump of claim 1 wherein said valve means is a nipple-type valve.
Claim 6
Dependent Claim
45 words
The pump of claim 4 wherein said upstream end of said bladder means has walls which are thinner in thickness toward said upstream end, and said upstream end acts as a one-way valve to permit fluids to enter said upstream end of said bladder means.
Claim 7
Dependent Claim
36 words
The pump of claim 1 wherein said housing means has a thin leaf-like strip molded therein adjacent to said cavity means to provide a skid plate for said trigger means when said trigger means is depressed.
Claim 8
Dependent Claim
16 words
The pump of claim 1 wherein said trigger means is integrally molded with said housing means.
Claim 9
Dependent Claim
256 words
A manually operable liquid dispensing pump for use and incorporation on a container for a liquid to be dispensed comprising, in combination: a. tubular bladder means having flexible walls which expand to their natural profile when depressed and relaxed, said bladder means having an upstream end and a downstream end, said downstream end having an integrally molded oneway valve means that permits fluid to pass outwardly from said bladder means, said upstream end of said bladder means being open to permit fluids to flow into said bladder-means, b. a one-piece, integrally molded housing means having: i. cavity means for receiving and containing said bladder means, said cavity means being disposed in a generally horizontal plane when said container is in an upright position, ii. channel means communicating with said cavity means, said channel means being substantially axially aligned with said container, said channel means being located substantially adjacent to said upstream end of said bladder means and between said upstream end and said downstream end of said bladder means when said bladder means is received in said cavity means, said upstream end of said bladder means sealing one end of said channel means to prevent fluids from entering said cavity means from said channel means when said bladder means is in a depressed position or in its natural profile, and to permit fluids to enter said bladder means while said bladder means is expanding to its natural profile, and c. trigger means connected to said housing means for depressing said bladder means to pump fluids therefrom.
Claim 10
Dependent Claim
256 words
A manually operable liquid dispensing pump for use and incorporation on a container for a liquid to be dispensed comprising, in combination: a. tubular bladder means having flexible walls which expand to their natural profile when depressed and relaxed, said bladder means having an upstream end and a downstream end, said downstream end having an integrally molded oneway valve means that permits fluid to pass outwardly from said bladder means, said upstream end of said bladder means being open to permit fluids to flow into said bladder-means, b. a one-piece, integrally molded housing means having: i. cavity means for receiving and containing said bladder means, said cavity means being disposed in a generally horizontal plane when said container is in an upright position, ii. channel means communicating with said cavity means, said channel means being substantially axially aligned with said container, said channel means being located substantially adjacent to said upstream end of said bladder means and between said upstream end and said downstream end of said bladder means when said bladder means is received in said cavity means, said upstream end of said bladder means sealing one end of said channel means to prevent fluids from entering said cavity means from said channel means when said bladder means is in a depressed position or in its natural profile, and to permit fluids to enter said bladder means while said bladder means is expanding to its natural profile, and c. trigger means connected to said housing means for depressing said bladder means to pump fluids therefrom.
Claim 11
Dependent Claim
21 words
The pump of claim 8 wherein said housing means has a lower tapered end means which is connectable to closure means.
Claim 12
Dependent Claim
13 words
The pump of claim 8 wherein said valve means is a nipple-type valve.
Claim 13
Dependent Claim
24 words
The pump of claim 8 wherein said upstream end of said bladder means has walls which are thinner in thickness toward said upstream end.
Claim 14
Dependent Claim
36 words
The pump of claim 8 wherein said housing means has a thin leaf-like strip molded therein adjacent to said cavity means to provide a skid plate for said trigger means when said trigger means is depressed.
Claim 15
Dependent Claim
16 words
The pump of claim 8 wherein said trigger means is integrally molded with said housing means.
Claim 16
Dependent Claim
20 words
The pump of claim 8 wherein nozzle means is located in said cavity means downstream from said one-way valve means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |