Quick disconnect nozzle assembly
First Claim
1. A quick disconnect spray nozzle assembly comprising a nozzle body for connection to a fluid supply source, a removable and replaceable spray tip, said spray tip and nozzle body each having an internal bore for the passage of liquid therethrough, said spray tip having a discharge orifice at a downstream end thereof for imparting a predetermined spray pattern to liquid passing through said liquid passage bores and discharging from said spray tip, said spray having an upstream end portion, an elongated tubular seal and biasing member externally mounted on said spray tip end portion, said nozzle body having a downstream spray tip receiving chamber formed with a seal seating cavity, said spray tip upstream end portion with said elongated seal and biasing member mounted thereon being positionable into said nozzle body receiving chamber and rotatable into mounted position in said nozzle body, said spray tip and nozzle body having cooperating camming and locking surfaces for causing said spray tip and nozzle body to be axially drawn together in response to rotational movement of said spray tip relative to said body and for compressing said seal and biasing member between said spray tip and said nozzle body seating cavity to effect both axial and radial sealing forces between said seal and biasing member and said spray tip and nozzle body seating section and for maintaining a biasing force on said spray tip while in said mounted position.
2 Assignments
0 Petitions
Accused Products
Abstract
A quick disconnect spray nozzle assembly having a nozzle body for connection to a fluid supply source and a removable and replaceable spray tip. The spray tip carries an externally mounted, elongated, tubular seal and biasing member which has an asymmetrical design, including an enlarged cylindrical downstream end and a rounded upstream end, configured for effecting radial and axial sealing forces upon engagement with seal a seating cavity in the nozzle body. The spray tip further includes radial camming and locking lugs having planar camming, detent, and locking surfaces which cooperate with the nozzle body for drawing the spray tip into mounted engagement, with the elongated sealing member interposed therebetween, as an incident to quick turn rotation of the spray tip and without the necessity for manually forcing the spray tip against the seal and biasing member.
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Citations
47 Claims
- 1. A quick disconnect spray nozzle assembly comprising a nozzle body for connection to a fluid supply source, a removable and replaceable spray tip, said spray tip and nozzle body each having an internal bore for the passage of liquid therethrough, said spray tip having a discharge orifice at a downstream end thereof for imparting a predetermined spray pattern to liquid passing through said liquid passage bores and discharging from said spray tip, said spray having an upstream end portion, an elongated tubular seal and biasing member externally mounted on said spray tip end portion, said nozzle body having a downstream spray tip receiving chamber formed with a seal seating cavity, said spray tip upstream end portion with said elongated seal and biasing member mounted thereon being positionable into said nozzle body receiving chamber and rotatable into mounted position in said nozzle body, said spray tip and nozzle body having cooperating camming and locking surfaces for causing said spray tip and nozzle body to be axially drawn together in response to rotational movement of said spray tip relative to said body and for compressing said seal and biasing member between said spray tip and said nozzle body seating cavity to effect both axial and radial sealing forces between said seal and biasing member and said spray tip and nozzle body seating section and for maintaining a biasing force on said spray tip while in said mounted position.
- 13. A quick disconnect spray nozzle assembly comprising a nozzle body for connection to a fluid supply source, a removable and replaceable spray tip, said spray tip and nozzle body each having an internal bore for the passage of liquid therethrough, said spray tip having a discharge orifice at a downstream end thereof for imparting a predetermined spray pattern to liquid passing through said liquid passage bores and discharging from said spray tip, said spray tip having an upstream end portion, said spray tip upstream end portion being insertable into said nozzle body and rotatable into mounted position with said body, said spray tip upstream end portion having radial locking elements for securing said spray tip in predetermined angularly orientated mounted position in said nozzle body, a seal and biasing member interposed between said nozzle body and said spray tip upstream end portion, said locking elements each being formed with a planar camming surface engageable with said nozzle body for causing said spray tip and nozzle body to be axially drawn together in response to rotation of said spray tip relative to said nozzle body for compressing said seal and biasing member therebetween to effect sealing forces between said seal and biasing member and the spray tip and nozzle body and to create a biasing force on said spray tip while in said mounted position, said locking elements each being formed with a planar locking surface angularly offset with respect to a planar camming surface, said locking surface of each locking element being engageable with said nozzle body under the biasing force of said seal and biasing member when said spray tip is rotated to said predetermined angular position with respect to said nozzle body for retaining said spray tip in said mounted position, said locking elements each being formed with a planar detent surface disposed between the planar camming and locking surfaces, said detent surfaces each being at an axial location adjacent a downstream axial end of said camming surface, and said locking surface each being axially offset in an upstream direction with respect to said detent surface.
- 23. A quick disconnect spray nozzle assembly comprising a nozzle body for connection to a fluid supply source, a removable and replaceable spray tip, said spray tip and nozzle body each having an internal bore for the passage of liquid therethrough, said spray tip having a discharge orifice at a downstream end thereof for imparting a predetermined spray pattern to liquid passing through said liquid passage bores and discharging from said spray tip, said spray having an upstream end portion, an elongated tubular seal and biasing member externally mounted on said spray tip end portion, said nozzle body having a downstream spray tip receiving chamber formed with a seal seating cavity, said spray tip upstream end portion with said elongated seal and biasing member mounted thereon being positionable into said nozzle body receiving chamber and rotatable into mounted position in said nozzle body, said spray tip upstream end portion having integrally formed radial camming elements, said camming elements each being formed with a planar camming surface engageable with said nozzle body for causing said spray tip and nozzle body to be axially drawn together in response to rotation of said spray tip relative to said nozzle body for compressing said seal and biasing member therebetween to effect sealing forces between said seal and biasing member and the spray tip and nozzle body and to create a biasing force on said spray tip while in said mounted position.
- 33. A quick disconnect spray nozzle assembly, comprising a nozzle body for connection to a fluid supply source, a removable and replaceable spray tip, said spray tip and nozzle body each having an internal bore for the passage of liquid therethrough, said spray tip having a discharge orifice at a downstream end thereof for imparting a predetermined spray pattern to liquid passing through said liquid passage bores and discharging from said spray tip, said spray tip having an upstream end portion, said spray tip upstream end portion being insertable into said nozzle body and rotatable into mounted position with said body, said spray tip upstream end portion having radial locking elements for securing said spray tip in predetermined angularly orientated mounted position in said nozzle body, a seal and biasing member interposed between said nozzle body and said spray tip upstream end portion, and said locking elements each being formed with a planar camming surface which extends outwardly in an upstream direction at an acute angle to a longitudinal axis of the spray tip and is engageable with said nozzle body for causing said spray tip and nozzle body to be axially drawn together in response to rotation of said spray tip relative to said nozzle body for compressing said seal and biasing member therebetween to effect sealing forces between said seal and biasing member and the spray tip and nozzle body and to create a biasing force on said spray tip while in said mounted position.
- 36. A quick disconnect spray nozzle assembly comprising a nozzle body for connection to a fluid supply source, a removable and replaceable spray tip, said spray tip and nozzle body each having an internal bore for the passage of liquid therethrough, said spray tip having a discharge orifice at a downstream end thereof for imparting a predetermined spray pattern to liquid passing through said liquid passage bores and discharging from said spray tip, said spray tip having an upstream end portion, said spray tip upstream end portion being insertable into said nozzle body and rotatable into mounted position with said body, said spray tip upstream end portion having radial locking lugs for securing said spray tip in predetermined angularly orientated mounted position in said nozzle body, a seal and biasing member interposed between said nozzle body and said spray tip upstream end portion, said locking lugs each having a radial end and laterally spaced sides and being formed with a camming surface that extends partially through the radial end of the lug and partially through one lateral side thereof, and said locking lug camming surfaces being engageable with said nozzle body for causing said spray tip and nozzle body to be axially drawn together in response to rotation of said spray tip relative to said nozzle body for compressing said seal and biasing member therebetween to effect sealing forces between said seal and biasing member and the spray tip and nozzle body and to create a biasing force on said spray tip while in said mounted position.
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41. A quick disconnect spray nozzle assembly comprising a nozzle body for connection to a fluid supply source, a removable and replaceable spray tip, said spray tip and nozzle body each having an internal bore for the passage of liquid therethrough, said spray tip having a discharge orifice at a downstream end thereof for imparting a predetermined spray pattern to liquid passing through said liquid passage bores and discharging from said spray tip, said spray tip having an upstream end portion, said spray tip upstream end portion being insertable into said nozzle body and rotatable into mounted position with said body, said spray tip upstream end portion having radial locking elements for securing said spray tip in predetermined angularly orientated mounted position in said nozzle body, a seal and biasing member interposed between said nozzle body and said spray tip upstream end portion, said locking elements each being formed with a planar camming surface engageable with said nozzle body for causing said spray tip and nozzle body to be axially drawn together in response to rotation of said spray tip relative to said nozzle body for compressing said seal and biasing member therebetween to effect sealing forces between said seal and biasing member and the spray tip and nozzle body and to create a biasing force on said spray tip while in said mounted position, said locking elements each being formed with a planar locking surface in a plane substantially perpendicular to a longitudinal axis of said spray tip and angularly offset with respect to said planar camming surface, and said locking surface of each locking element being engageable with said nozzle body under the biasing force of said seal and biasing member when said spray tip is rotated to said predetermined angular position with respect to said nozzle body for retaining said spray tip in said mounted position.
- 42. A quick disconnect spray nozzle assembly comprising a nozzle body for connection to a fluid supply source, a removable and replaceable spray tip, said spray tip and nozzle body each having an internal bore for the passage of liquid therethrough, said spray tip having a discharge orifice at a downstream end thereof for imparting a predetermined spray pattern to liquid passing through said liquid passage bores and discharging from said spray tip, said spray having an upstream end portion, an elongated tubular seal and biasing member externally mounted on said spray tip end portion, said nozzle body having a downstream spray tip receiving chamber formed with a seal seating cavity, said spray tip upstream end portion with said elongated seal and biasing member externally mounted thereon being insertable into said nozzle body receiving chamber to compress said seal and biasing member between said spray tip and said nozzle body seating cavity for effecting sealing forces between said seal and biasing member and said spray tip and nozzle body seating section as an incident to positioning of said spray tip into mounted position, and said spray tip and nozzle body having cooperating locking elements for locking said spray tip in mounted position in said body as an incident to rotation of said spray tip relative to said body for maintaining a biasing force on said spray tip while in said mounted position.
Specification