Patent EP0163275A2 successfully refreshed from Google Patents.
Patent US3791632A successfully refreshed from Google Patents.
US3791632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charge forming apparatus
Assignee: TILLOTSON Ltd (TILLOSTSON") A CORP OF IRELAND
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Filing: 1973-04-12
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Granted: 1974-02-12
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Expires: 1993-04-12
Abstract
Abstract The disclosure embraces a charge forming apparatus or carburetor having a body embodying a guide and valve seat construction for a fuel inlet valve, the valve guide being disposed to seal off porosity adjacent the inlet valve region of the body of the charge forming apparatus or carburetor to prevent seepage or leakage of liquid fuel through a porous region that may exist or be uncovered by processing operations on the carburetor body.
Inventors
- 👤 D Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:41
CPC Classifications
F; F02; F02M; F02M5/00; F02M5/12; F02M5/125; Y; Y10; Y10S; Y10S261/00; Y10S261/68
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
197 words
Apparatus of the character disclosed including, in combination, a carburetor body construction having a fuel and air mixing passage and a fuel chamber, a throttle valve in the mixing passage, a fuel chamber in said body construction, a fuel metering diaphragm forming a wall of the fuel chamber, channel means for conveying fuel from the fuel chamber into the mixing passage, a fuel inlet passage for the fuel chamber provided in the body construction, a fuel inlet valve, said body construction having a recess, a fitting having a tubular portion extending into the recess slidably accommodating the inlet valve, valve seat means associated with the tubular portion of said fitting providing a fuel port in communication with the fuel inlet passage, sealing means between the tubular portion and a wall of the recess, a pivotally supported member in said fuel chamber engageable with the diaphragm and the fuel inlet valve whereby the relative position of said inlet valve is controlled by said diaphragm, spring means normally biasing the fuel inlet valve toward port-closing position, said fitting having a laterally extending portion, and means engaging said laterally extending portion for securing said fitting to the carburetor body construction.
Claim 2
Dependent Claim
197 words
Apparatus of the character disclosed including, in combination, a carburetor body construction having a fuel and air mixing passage and a fuel chamber, a throttle valve in the mixing passage, a fuel chamber in said body construction, a fuel metering diaphragm forming a wall of the fuel chamber, channel means for conveying fuel from the fuel chamber into the mixing passage, a fuel inlet passage for the fuel chamber provided in the body construction, a fuel inlet valve, said body construction having a recess, a fitting having a tubular portion extending into the recess slidably accommodating the inlet valve, valve seat means associated with the tubular portion of said fitting providing a fuel port in communication with the fuel inlet passage, sealing means between the tubular portion and a wall of the recess, a pivotally supported member in said fuel chamber engageable with the diaphragm and the fuel inlet valve whereby the relative position of said inlet valve is controlled by said diaphragm, spring means normally biasing the fuel inlet valve toward port-closing position, said fitting having a laterally extending portion, and means engaging said laterally extending portion for securing said fitting to the carburetor body construction.
Claim 3
Dependent Claim
33 words
The combination according to claim 1 wherein the valve seat means is provided by an end wall of the tubular portion, and the fuel port provided by an opening in said end wall.
Claim 4
Dependent Claim
28 words
The combination according to claim 1 wherein the securing means is in threaded engagement with the body construction, said securing means having an opening accommodating the spring means.
Claim 5
Dependent Claim
215 words
Apparatus of the character disclosed including, in combination, a carburetor body construction having a fuel and air mixing passage and a fuel chambEr, a throttle valve in the mixing passage, a fuel chamber in said body construction, a fuel metering diaphragm forming a wall of the fuel chamber, channel means for conveying fuel from the fuel chamber into the mixing passage, a fuel inlet passage for the fuel chamber provided in the body construction, a fuel inlet valve, said body construction having a recess, a tubular member in said recess, valve seat means for the inlet valve associated therewith, said fuel inlet valve being slidably disposed in the interior of the tubular member and having a valve portion cooperating with the valve seat means, sealing means disposed between the tubular member and the wall of the recess, a pivotally supported member engageable with the diaphragm and the fuel inlet valve whereby the position of the inlet valve is controlled by the diaphragm, a plate having an opening accommodating a portion of the tubular member, said plate engaging the sealing means, said plate extending laterally of the tubular member, and means extending through a second opening in the plate and threaded into the carburetor body construction for securing the plate in engagement with the sealing means.
Claim 6
Dependent Claim
215 words
Apparatus of the character disclosed including, in combination, a carburetor body construction having a fuel and air mixing passage and a fuel chambEr, a throttle valve in the mixing passage, a fuel chamber in said body construction, a fuel metering diaphragm forming a wall of the fuel chamber, channel means for conveying fuel from the fuel chamber into the mixing passage, a fuel inlet passage for the fuel chamber provided in the body construction, a fuel inlet valve, said body construction having a recess, a tubular member in said recess, valve seat means for the inlet valve associated therewith, said fuel inlet valve being slidably disposed in the interior of the tubular member and having a valve portion cooperating with the valve seat means, sealing means disposed between the tubular member and the wall of the recess, a pivotally supported member engageable with the diaphragm and the fuel inlet valve whereby the position of the inlet valve is controlled by the diaphragm, a plate having an opening accommodating a portion of the tubular member, said plate engaging the sealing means, said plate extending laterally of the tubular member, and means extending through a second opening in the plate and threaded into the carburetor body construction for securing the plate in engagement with the sealing means.
Claim 7
Dependent Claim
228 words
Apparatus of the character disclosed including, in combination, a carburetor body construction having a fuel and air mixing passage and a fuel chamber, a throttle valve in the mixing passage, a fuel chamber in said body construction, a fuel metering diaphragm forming a wall of the fuel chamber, channel means for conveying fuel from the fuel chamber into the mixing passage, a fuel inlet passage for the fuel chamber provided in the body construction, a fuel inlet valve, said body construction having a recess, a fitting having a tubular portion extending into the recess, said tubular portion slidably accommodating the inlet valve, valve seat means for the inlet valve associated with the tubular portion of the fitting and providing a fuel port, said fuel port being in communication with the fuel inlet passage, sealing means engaging the tubular portion and the wall of the recess, said fitting having a laterally extending portion, securing means engaging the laterally extending portion of the fitting for securing the fitting in position, said fitting having depending portions, a pin extending through openings in the depending portion, a member supported on said pin for pivotal movement, said member having portions engageable with the diaphragm and the fuel inlet valve whereby the position of the inlet valve is controlled by the diaphragm, and spring means normally biasing the fuel inlet valve toward port-closing position.
Claim 8
Dependent Claim
228 words
Apparatus of the character disclosed including, in combination, a carburetor body construction having a fuel and air mixing passage and a fuel chamber, a throttle valve in the mixing passage, a fuel chamber in said body construction, a fuel metering diaphragm forming a wall of the fuel chamber, channel means for conveying fuel from the fuel chamber into the mixing passage, a fuel inlet passage for the fuel chamber provided in the body construction, a fuel inlet valve, said body construction having a recess, a fitting having a tubular portion extending into the recess, said tubular portion slidably accommodating the inlet valve, valve seat means for the inlet valve associated with the tubular portion of the fitting and providing a fuel port, said fuel port being in communication with the fuel inlet passage, sealing means engaging the tubular portion and the wall of the recess, said fitting having a laterally extending portion, securing means engaging the laterally extending portion of the fitting for securing the fitting in position, said fitting having depending portions, a pin extending through openings in the depending portion, a member supported on said pin for pivotal movement, said member having portions engageable with the diaphragm and the fuel inlet valve whereby the position of the inlet valve is controlled by the diaphragm, and spring means normally biasing the fuel inlet valve toward port-closing position.
Claim 9
Dependent Claim
19 words
The combination according to claim 5 wherein the inlet valve seat means is an integral portion of the fitting.
Claim 10
Dependent Claim
13 words
The combination according to claim 5 wherein the fitting is of resinous material.
Claim 11
Dependent Claim
12 words
The combination according to claim 5 wherein the fitting is of polyoxymethylene.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |