US4047852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-line pump construction
Assignee: Walbro Corp
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Filing: 1976-08-16
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Granted: 1977-09-13
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Expires: 1996-08-16
Abstract
Abstract An in-line pump construction for mounting in a fuel tank or fuel line having line connections at each end of a tubular construction, valves mounted within the tube and a filter retained by a line connector nipple at the inlet end adjacent a valve module, there being a remote control module positionable at a distance from the pump for easy access and replacement.
Inventors
- 👤 Alton J. O'Connor
- 👤 Thomas L. Schrinel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:26
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/04; F02M37/08; F04; F04B; F04B17/00; F04B17/03; F04B17/04; F04B17/046; H; H02; H02K; H02K33/00; H02K33/02; F02M2037/085
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
204 words
A fuel pump adapted for mounting in a fuel line which comprises: a. a tube forming a body, b. a solenoid coil assembly mounted concentrically around one end of said body, c. a tubular armature slidable in said body in the area surrounded by said coil, said armature having a stepped bore, one end of said stepped bore serving as a guide for a flow check valve, the other end of said bore serving as a valve seat retainer, d. a cup-shaped valve seat having a valve opening in the bottom thereof and positioned in said other end of said stepped bore, e. a slidable flow check valve member guide in said bore having a valve portion to cooperate with said valve opening in said valve seat, f. a second valve housing at the other of said body having a valve seat and valve recess, g. a valve in said valve recess to cooperate with said seat, h. spring means interposed between said cup-shaped valve seat and said second valve housing to serve as a retainer for said cup-shaped valve seat and a resilient bias for said armature, and i. means to retain said second valve housing in said body against said spring means.
Claim 2
Dependent Claim
204 words
A fuel pump adapted for mounting in a fuel line which comprises: a. a tube forming a body, b. a solenoid coil assembly mounted concentrically around one end of said body, c. a tubular armature slidable in said body in the area surrounded by said coil, said armature having a stepped bore, one end of said stepped bore serving as a guide for a flow check valve, the other end of said bore serving as a valve seat retainer, d. a cup-shaped valve seat having a valve opening in the bottom thereof and positioned in said other end of said stepped bore, e. a slidable flow check valve member guide in said bore having a valve portion to cooperate with said valve opening in said valve seat, f. a second valve housing at the other of said body having a valve seat and valve recess, g. a valve in said valve recess to cooperate with said seat, h. spring means interposed between said cup-shaped valve seat and said second valve housing to serve as a retainer for said cup-shaped valve seat and a resilient bias for said armature, and i. means to retain said second valve housing in said body against said spring means.
Claim 3
Dependent Claim
55 words
A fuel pump as defined in claim 1 in which a filter is interposed in said other end of said body having a flange portion engaged with said second valve housing, and a line connector telescoped over said other end of said body having a portion to engage and position said filter in said tube.
Claim 4
Dependent Claim
57 words
A fuel pump as defined in claim 1 in which an armature stop ring is positioned at said one end of said body axially of said armature, and a line connector nipple fastened on said one end of said body having a portion to axially engage said stop ring to hold it in position within said tube.
Claim 5
Dependent Claim
50 words
A fuel pump as defined in claim 1 in which said tube is closed at the armature end by a cupshaped element, and a spring seated at one end in said element and having its other end extending into said tube to serve as a shock absorber for said armature.
Claim 6
Dependent Claim
30 words
A fuel pump as defined in claim 4 in which said cup-shaped element has a hollow stem extending from the bottom of said cup to serve as a hose connector.
Claim 7
Dependent Claim
37 words
A fuel pump as defined in claim 5 in which said cup-shaped element has an annular groove formed in the outer surface thereof, said tube being formed into said groove to retain said element in said tube.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |