Vapor control spout

Claim 2

A spout for a gasoline nozzle comprising a curved, rigid tube, an inlet end of the tube having means for attachment to the outlet end of a nozzle, an outlet end of the tube being adapted to extend into the mouth of a fill tube of a vehicle fuel tank, a rigid housing surrounding said tube, said housing having a rearward end, a forward end, and a vapor outlet port, said housing defining with an outer wall of said tube a vapor receiving chamber therebetween, said chamber having passage means communicating with said port, means providing sealing engagement of the rearward end of said housing about said tube at a first position on the tube, a wedge sleeve adjustably engaged to the forward end of the housing for movement relative to the housing to engage and bind a rear sleeve portion against the tube at a second position on the tube forward of the first position on the tube and curved away from the first position on the tube, said wedge sleeve having an engaging surface in a forward sleeve portion acting with said rear sleeve portion on said tube to support the forward end of of said housing on the tube, said engaging and binding at the second position on the tube occurring when the housing has said rearward end sealingly engaged about the tube at said first position on the tube, said wedge sleeve having means forming a vapor passage between said sleeve and said tube to communicate said vehicle tank with said chamber.

Claim 3

The spout of claim 1 wherein the rear portion of said sleeve extends into the forward end of said housing in threaded engagement therewith.

Claim 4

The spout of claim 1 wherein said housing further includes a transverse hole at its rearward end, and wherein said tube has a transverse recess in its outer wall in alignment with said hole, said spout further comprising a lock pin extending through said hole and into said recess.

Claim 5

The spout of claim 1 further comprising a vapor conduit attached to said port for the passage of vapor therethrough from said chamber.

Claim 6

The spout of claim 1 wherein said sleeve is sized to be of smaller diameter than the fill tube of the vehicle tank and extends into the mouth of the fill tube, whereby suction means creates a suction in said chamber drawing vapor from said tank and air from outside said tank into said upon passage means.

Claim 7

The spout of claim 5 wherein said sleeve is adapted to extend into the mouth of the fill tube a minimum of approximately 3/4 to 1 inch.

Claim 8

A spout for a gasoline nozzle comprising a curved, rigid tube, an inlet end of the tube having means for attachment to the outlet end of the nozzle, an outlet end of the tube being adapted to extend into the mouth of a fill tube of a vehicle fuel tank, a rigid housing surrounding said tube, said housing having a rearward end, a forward end, and a vapor outlet port, said housing defining with an outer wall of said tube a vapor receiving chamber therebetween, said chamber having passage means communicating with said port, means providing sealing engagement of the rearward end of said housing about said tube at a first position on said tube, a wedge sleeve adjustably attached to the forward end of said housing for movement relative to the housing to engage and bind a rear sleeve portion against the tube at a second position on the tube forward of the first position on the tube and curved away from the first position on the tube, said wedge sleeve having an engaging surface in a forward sleeve portion acting with said rear sleeve portion on said tube to support the forward end of said housing on the tube, said engaging and binding at the second position on the tube occurring when the housing has said rearward end sealingly engaged about the tube at said first position on the tube, said sleeve having openings at its forward portion for receipt of vapor from the vehicle tank, and having vapor passage means associated therewith in communication with said openings and communicating said chamber with the vehicle tank, said sleeve being sized to be of smaller diameter than the fill tube of the vehicle tank and extending into the mouth of the fill tube to define an opening between said sleeve and the mouth of said fill tube, whereby suction means creates a suction in said chamber drawing vapor from said tank into said openings at the forward portion of the sleeve and drawing air from outside said tank through said opening between the sleeve and the mouth of the fill tube and into said openings at the forward portion of said sleeve.

Claim 9

A spout for a gasoline nozzle comprising a curved, rigid tube, an inlet end of the tube having means for attachment to the outlet end of the nozzle, an outlet end of the tube being adapted to extend into the mouth of a fill tube of a vehicle fuel tank, a rigid housing surrounding said tube, said housing having a rearward end, a forward end, and a vapor outlet port, said housing defining with an outer wall of said tube a vapor receiving chamber therebetween, said chamber having passage means communicating with said port, means providing sealing engagement of the rearward end of said housing about said tube at a first position on said tube, a wedge sleeve adjustably attached to the forward end of said housing for movement relative to the housing to engage and bind a rear sleeve portion against the tube at a second position on the tube forward of the first position on the tube and curved away from the first position on the tube, said wedge sleeve having an engaging surface in a forward sleeve portion acting with said rear sleeve portion on said tube to support the forward end of said housing on the tube, said engaging and binding at the second position on the tube occurring when the housing has said rearward end sealingly engaged about the tube at said first position on the tube, said sleeve having openings at its forward portion for receipt of vapor from the vehicle tank, and having vapor passage means associated therewith in communication with said openings and communicating said chamber with the vehicle tank, said sleeve being sized to be of smaller diameter than the fill tube of the vehicle tank and extending into the mouth of the fill tube to define an opening between said sleeve and the mouth of said fill tube, whereby suction means creates a suction in said chamber drawing vapor from said tank into said openings at the forward portion of the sleeve and drawing air from outside said tank through said opening between the sleeve and the mouth of the fill tube and into said openings at the forward portion of said sleeve.

Claim 10

A spout for a gasoline nozzle comprising a curved, rigid tube, an inlet end of the tube having means for attachment to the outlet end of a nozzle, an outlet end of the tube being adapted to extend into the mouth of a fill tube of a vehicle fuel tank, a rigid housing surrounding said tube, said housing having a rearward end, a forward end, and a vapor outlet port, said housing defining with an outer wall of said tube a vapor receiving chamber therebetween, said chamber having passage means communicating with said port, said housing having an opening in its rearward end to receive a rear part of the tube and the housing having a sleeve portion positioned at the forward end of the housing to receive a forward part of the tube curved from the rear part of the tube, said sleeve having an inner end and an engaging surface, means providing sealing engagement of the rearward end of said housing about said rear tube part, said sleeve extending along an axis different from the axis of the rearward opening of the housing, the inner end of the sleeve engaging and binding said outer wall of the forward part of the tube when the rearward end of the housing is sealed about the rear tube part while said engaging surface contacts a further forward part of said tube, said sleeve portion having means forming a vapor passage between said sleeve and said tube to communicate said vehicle tank with said chamber.

Claim 11

A spout for a gasoline nozzle comprising a curved, rigid tube, an inlet end of the tube having means for attachment to the outlet end of a nozzle, an outlet end of the tube being adapted to extend into the mouth of a fill tube of a vehicle fuel tank, a rigid housing surrounding said tube, said housing having a rearward end, a forward end, and a vapor outlet port, said housing defining with an outer wall of said tube a vapor receiving chamber therebetween, said chamber having passage means communicating with said port, said housing having an opening in its rearward end to receive a rear part of the tube and the housing having a sleeve portion positioned at the forward end of the housing to receive a forward part of the tube curved from the rear part of the tube, said sleeve having an inner end and an engaging surface, means providing sealing engagement of the rearward end of said housing about said rear tube part, said sleeve extending along an axis different from the axis of the rearward opening of the housing, the inner end of the sleeve engaging and binding said outer wall of the forward part of the tube when the rearward end of the housing is sealed about the rear tube part while said engaging surface contacts a further forward part of said tube, said sleeve portion having means forming a vapor passage between said sleeve and said tube to communicate said vehicle tank with said chamber.