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US3791591A Expired / Lapsed US ⏱️ 0.0 years remaining

Fuel injection nozzle assembly

Assignee: Individual
•
Filing: 1972-06-08
•
Granted: 1974-02-12
•
Expires: 1992-06-08
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Abstract

Abstract An improved fuel injection nozzle assembly is provided which may be easily removed from an engine block for replacement and maintenance purposes. A valve body may be provided having an axial passageway extending from a first axial end to a second axial end. A pintle may be axially, slideably disposed within the axial passageway and a coil spring may be disposed between a first axial end of the pintle and a fuel pressure adjustment nut, threadedly engaged over a first axial end of the valve body. An adjustment screw may be threadedly disposed axially through the adjustment nut for engagement with the spring, to make fine fuel pressure adjustments. A recess may be formed in a second axial end of the valve body to receive a correspondingly formed head of a spray nozzle and a clamping means may be provided for urging the body and nozzle toward an engine block bore hole. The valve body and nozzle are held in an operational posture solely in response to the action of the clamping member urging the two against the surfaces of the engine block, defining the bore hole.

Inventors

  • 👤 H Hedges

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 06:56
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/14

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 155 words
A fuel injection nozzle assembly, mountable within a bore hole of an engine block, comprising: a valve body; a clamping member, operable to urge the valve body toward the engine block; a nozzle seperable from said valve body and having a head portion at a first axial end and a spray tip at the other axial end, being slideably disposable within the bore hole; said valve body being formed with a passageway extending, generally, from a first axial end to a second axial end thereof; a radial surface of said second axial end of said valve body being formed with a recess communicating with said axial passageway of said nozzle and being operable to slideably receive said head portion of said nozzle; and said valve body and said nozzle being held in a properly aligned, operational posture solely in response to the urging of said valve body toward said engine block by said clamping means.
Claim 2
Dependent Claim 155 words
A fuel injection nozzle assembly, mountable within a bore hole of an engine block, comprising: a valve body; a clamping member, operable to urge the valve body toward the engine block; a nozzle seperable from said valve body and having a head portion at a first axial end and a spray tip at the other axial end, being slideably disposable within the bore hole; said valve body being formed with a passageway extending, generally, from a first axial end to a second axial end thereof; a radial surface of said second axial end of said valve body being formed with a recess communicating with said axial passageway of said nozzle and being operable to slideably receive said head portion of said nozzle; and said valve body and said nozzle being held in a properly aligned, operational posture solely in response to the urging of said valve body toward said engine block by said clamping means.
Claim 3
Dependent Claim 84 words
Apparatus according to claim No. 1, wherein: said first axial end of said body is provided with a removeable cap member, covering the first axial end of said passageway extending through said valve body; a pintle member is slidingly disposed within said axial passageway of said valve body; and said pintel is slideably, removeable from either axial end of said valve body upon lifting said valve body from said nozzle and upon removing said cap from said first axial end of said valve body.
Claim 4
Dependent Claim 39 words
Apparatus according to claim No. 1, wherein an annular groove is formed about said nozzle immediately adjacent said head portion, thereof; and an O-ring seal is operationally disposed about said nozzle and is generally received within said anular groove.
Claim 5
Dependent Claim 55 words
Apparatus according to claim No. 1, wherein: said head portion is radially enlarged with respect to the remaining portion of said nozzle; said radial cross-sectional configurations of said enlarged head and of said recess are substantially identical; and the axial thickness of said enlarged head is substantially co-extensive with the axial depth of said recess.

References Cited (Backward Citations)

US3159350A Cited
US3244377A Cited
US3384308A Cited
US3628736A Cited
US3695235A Cited
US3717305A Cited

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

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