Patent US3863805A successfully refreshed from Google Patents.
US3863805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exchangeable piston pump unit
Assignee: Pfizer Health AB
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Filing: 1973-06-06
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Granted: 1975-02-04
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Expires: 1993-06-06
Abstract
Abstract A dispenser for liquids includes a mounting unit to interchangeably hold a series of exchangeable piston type pumps, each of which is marked with scales to indicate the volume displaced by corresponding movement of the pump piston, the mounting unit including a piston actuator and a series of push bottons controlling the stroke of the actuator and located adjacent the respective portions of a pump scale corresponding to the volume to be dispensed under the control of each respective push button.
Inventors
- 👤 Heinz Dzaack
- 👤 Sven Axlid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:00
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/0203; B01L3/0206
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
Liquid dispensing system comprising a plurality of exchangeable liquid pump units and mounting means for removably supporting any one of said pump units in a position for dispensing liquid in measured quantities, each of said pump units including a housing containing movable piston means having an exteriorly projecting means For moving the piston means, said mounting means including a plurality of setting means arranged in spaced relationship to each other and in proximity to a support pump unit, said mounting means also being provided with driving means for engagement with the means for moving the piston means of a pump unit in predetermined increments in response to actuation of a setting means, the amount of said increment of movement being dependent upon the respective setting means actuated, each of the housings of the pump units being provided with volumetric indicia means arranged in spaced relationship to each other and to be disposed respectively in proximity to respective ones of said setting means, the predetermined increment of movement of a piston means initiated by actuation of each setting means being the respective amount necessary to dispense the volume of liquid denoted by the indicia means disposed in proximity to that setting means.
Claim 2
Dependent Claim
201 words
Liquid dispensing system comprising a plurality of exchangeable liquid pump units and mounting means for removably supporting any one of said pump units in a position for dispensing liquid in measured quantities, each of said pump units including a housing containing movable piston means having an exteriorly projecting means For moving the piston means, said mounting means including a plurality of setting means arranged in spaced relationship to each other and in proximity to a support pump unit, said mounting means also being provided with driving means for engagement with the means for moving the piston means of a pump unit in predetermined increments in response to actuation of a setting means, the amount of said increment of movement being dependent upon the respective setting means actuated, each of the housings of the pump units being provided with volumetric indicia means arranged in spaced relationship to each other and to be disposed respectively in proximity to respective ones of said setting means, the predetermined increment of movement of a piston means initiated by actuation of each setting means being the respective amount necessary to dispense the volume of liquid denoted by the indicia means disposed in proximity to that setting means.
Claim 3
Dependent Claim
66 words
The invention described in claim 1, wherein an increment of movement of the piston means of one of said pump units dispenses a volume of liquid which differs from the volume of liquid dispensed by the piston means of another pump unit during the same increment of movement, the indicia means of both said pump units being similarly arranged and denoting respectively different appropriate volumetric values.
Claim 4
Dependent Claim
17 words
The invention described in claim 2, wherein the exterior configuration of said pump units is substantially identical.
Claim 5
Dependent Claim
38 words
The invention described in claim 1, wherein said mounting means includes a panel provided with a recess within which a pump unit is received, the setting means being disposed in a row adjacent one margin of said recess.
Claim 6
Dependent Claim
61 words
The invention described in claim 4, wherein any one of said pump units may be received within said recess, each of said pump units being provided with a surface to be disposed generally in alignment with the surface of said panel, said indicia means being disposed on said pump unit surface in a row parallel to said row of setting means.
Claim 7
Dependent Claim
55 words
The invention defined in claim 5, wherein the surface of said panel is flat and said recess is defined by a pair of parallel vertical margins, said pump units being elongated and said surfaces upon which the indicia are disposed being generally flush with the surface of the panel when supported by the mounting means.
References Cited (Backward Citations)
GB1195135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |