US3768839A — Expandable carburetor fitting

Claim 1

Independent Claim 350 words

In a carburetor having a fuel inlet, said inlet having a mouth, a threaded part extending axially inwardly from said mouth, and a nonthreaded part inboard of and adjacent said threaded part, the improvement which comprises an expandable fitting having at least two, axially spaced resiliently deformable members, one of said members being positioned for expansion along said nonthreaded part and the other of said deformable members being positioned for expansion along said threaded part, said expandable fitting comprising a male part having an axial opening therethrough, said male part including a threaded shank insertable in said inlet, an enlarged head portion having an outer diameter greater than the internal diameter of said inlet, positioned outboardly of said mouth in the inserted position of said shank and a ridge portion insertable in said inlet, said ridge portion being defined by an axial wall and a radial wall extending outwardly from said axial wall, said ridge portion being integrally formed with and positioned between said head portion and said shank; a female part having an axial opening therethrough for intermounting with said shank, said female part having an outer wall defining an axial surface and a radial surface extending outwardly from said axial surface; and expanding means having a body, said body having an axial opening through it, said opening being sized to permit simultaneous intermounting with said ridge portion and said axial surface as said female part is threadedly intermounted with said shank, each of said resiliently deformable members defining an annulus, one of said annuli being mounted on said ridge portion, abutting said radial wall on a first side of said annulus and abutting said expanding means on the second side of said annulus, the other of said annuli being mounted on said female part, abutting said radial surface on a first side of said annulus and abutting said expanding means on a second side of said annulus, each of said annuli being forced radially outwardly between respective ones of said radial wall, said radial surface and said expanding means as said female part is intermounted on said shank.

Claim 2

Dependent Claim 350 words

In a carburetor having a fuel inlet, said inlet having a mouth, a threaded part extending axially inwardly from said mouth, and a nonthreaded part inboard of and adjacent said threaded part, the improvement which comprises an expandable fitting having at least two, axially spaced resiliently deformable members, one of said members being positioned for expansion along said nonthreaded part and the other of said deformable members being positioned for expansion along said threaded part, said expandable fitting comprising a male part having an axial opening therethrough, said male part including a threaded shank insertable in said inlet, an enlarged head portion having an outer diameter greater than the internal diameter of said inlet, positioned outboardly of said mouth in the inserted position of said shank and a ridge portion insertable in said inlet, said ridge portion being defined by an axial wall and a radial wall extending outwardly from said axial wall, said ridge portion being integrally formed with and positioned between said head portion and said shank; a female part having an axial opening therethrough for intermounting with said shank, said female part having an outer wall defining an axial surface and a radial surface extending outwardly from said axial surface; and expanding means having a body, said body having an axial opening through it, said opening being sized to permit simultaneous intermounting with said ridge portion and said axial surface as said female part is threadedly intermounted with said shank, each of said resiliently deformable members defining an annulus, one of said annuli being mounted on said ridge portion, abutting said radial wall on a first side of said annulus and abutting said expanding means on the second side of said annulus, the other of said annuli being mounted on said female part, abutting said radial surface on a first side of said annulus and abutting said expanding means on a second side of said annulus, each of said annuli being forced radially outwardly between respective ones of said radial wall, said radial surface and said expanding means as said female part is intermounted on said shank.

Claim 3

Dependent Claim 77 words

The improvmeent of claim 1 wherein each of said annuli are 0-rings, the outer diameters of each of said 0-rings in their non-deformed state being less than the respective outer diameters of said radial wall and said radial surface of said male and female parts, the outer diameters of each of said 0-rings being greater than the respective outer diameters of said radial wall and said radial surface when said shank is intermounted with said female part.

Claim 4

Dependent Claim 73 words

The improvement of claim 1 wherein said axial opening in said male part is expanded along said head portion to form a connection end for said male part, said connection end having a threaded inner wall and a bottom wall closing one side of said connection end, except along said axial opening in said shank, said bottom wall having an annular connection node about the entrance of said axial opening in said shank.

Claim 5

Dependent Claim 291 words

An expandable carburetor fitting for a carburetor having a fuel inlet, said inlet having a mouth defined by a wall, said wall having a threaded part and a nonthreaded part extending sequentially inwardly from said mouth, comprising: a male fitting having an axial opening therethrough including a threaded shank, an enlarged head portion, and a ridge portion having an axial surface and a radial wall perpendicular to and extending outwardly from said axial surface, said ridge portion being positioned between and integrally formed with said head portion and said shank; a threaded female fitting having an axial opening in it, for intermounting with said shank, said female fitting having an outer wall defining an axial surface and a radial surface, said radial surface being perpendicular to said axial surface; expanding means including a body part having an axial opening therethrough, said body part having a chamfered edge about said axial opening, on each end of said body, said expanding means being intermountable with each of said axial wall and said axial surface as said shank is inserted into said female fitting; a first resiliently deformable annulus intermounted on said ridge portion, abutting said radial wAll; and a second resiliently deformable annulus mounted on said female fitting, abutting said radial surface, the radial dimension of said carburetor fitting being such that said second annulus is positioned along the nonthreaded portion of said inlet while said first annulus is positioned along said threaded portion of said inlet when said fitting is inserted in said fuel inlet, said first and said second annuli being expanded radially outwardly between the chamfered edge of said expanding means and said radial wall and said radial surface respectively, as said male fitting is inserted in said female fitting.

Claim 6

Dependent Claim 291 words

An expandable carburetor fitting for a carburetor having a fuel inlet, said inlet having a mouth defined by a wall, said wall having a threaded part and a nonthreaded part extending sequentially inwardly from said mouth, comprising: a male fitting having an axial opening therethrough including a threaded shank, an enlarged head portion, and a ridge portion having an axial surface and a radial wall perpendicular to and extending outwardly from said axial surface, said ridge portion being positioned between and integrally formed with said head portion and said shank; a threaded female fitting having an axial opening in it, for intermounting with said shank, said female fitting having an outer wall defining an axial surface and a radial surface, said radial surface being perpendicular to said axial surface; expanding means including a body part having an axial opening therethrough, said body part having a chamfered edge about said axial opening, on each end of said body, said expanding means being intermountable with each of said axial wall and said axial surface as said shank is inserted into said female fitting; a first resiliently deformable annulus intermounted on said ridge portion, abutting said radial wAll; and a second resiliently deformable annulus mounted on said female fitting, abutting said radial surface, the radial dimension of said carburetor fitting being such that said second annulus is positioned along the nonthreaded portion of said inlet while said first annulus is positioned along said threaded portion of said inlet when said fitting is inserted in said fuel inlet, said first and said second annuli being expanded radially outwardly between the chamfered edge of said expanding means and said radial wall and said radial surface respectively, as said male fitting is inserted in said female fitting.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-10-29	1977-04-30	1977-10-30	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-10-29	1981-04-30	1981-10-30	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-10-29	1985-04-30	1985-10-30	$7700.00	Window Closed / Lapsed

Expandable carburetor fitting

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