Patent US1009085A successfully refreshed from Google Patents.
EP0204577A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Foam dispensing gun with improved mixing chamber
Assignee: Olin Corp
•
Filing: 1986-06-05
•
Granted: —
•
Expires: 2006-06-05
Abstract
Abstract in a plural component foam dispensing apparatus there is provided an easily removable and replaceable combination nozzle-mixing chamber that is formed of a low friction, slightly deformable material with a first front contact surface against which is applied force to load the second rear contact surface against the contact surface of the nozzle seat to securely hold the combination nozzle-mixing chamber in place. The core of the combination nozzle-mixing chamber is not axially restrained on each end.
Inventors
- 👤 Robert Clinton Gammons
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 13:39
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/74; B29B7/76; B29B7/7663; B29B7/7678; B01; B01F; B01F25/00; B01F25/20; B01F25/23; B05; B05B; B05B7/00; B05B7/0018; B05B7/02; B05B7/04; B05B7/0408; B05B7/12; B05B7/1209
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
390 words
1 . A plural component dispensing apparatus for dispensing a foam formed from the impingement mixing of plural components comprising, in combination: (a) a valve block with a hollow valving rod passage centrally positioned therein and flow port means for the fluid flow of the plural components therethrough; (b) a nozzle seat with a nozzle seat contact surface on a first end of the valve block, the nozzle seat being aligned with and having the valving rod passage extend thereinto; (c) a removable and deformable nozzle having a first portion and a second portion interconnected by a central portion and having a central, elongate bore extending therethrough aligned with the valving rod passage, the central portion having a first contact surface defining the terminus of the first portion and external thereof and an opposing second contact surface defining the terminus of the second portion and external thereof, the second contact surface further fitting together with the nozzle seat contact surface when force is applied against the first contact surface; (d) at least two plural component nozzle inlet ports in the central portion extending therethrough and opening into the bore, the nozzle inlet ports conveying the plural components from the flow port means into the bore; (e) a valving rod reciprocably movable within the valving rod passage and.the bore between a first position extending forwardly of the nozzle inlet ports to shut off the flow of plural components and a second position rearwardly of the nozzle inlet ports to permit the flow of plural components into the bore; (f) a mixing chamber within the bore of the nozzle defined by the second position of the valving rod and the opening of the nozzle inlet ports into the bore for the impingement mixing of the plural components; (g) cylinder means connectable to an opposing second end of the valve block to reciprocatingly actuate the valving rod; (h) plural component supply means to supply at least two plural components to the valve block; and (i) nozzle retaining means removably connectable to the nozzle seat adjustable to exert a force against the first contact nozzle surface to load the nozzle and the nozzle second contact surface against the contact surface of the nozzle seat to hold the nozzle securely in place, the nozzle retaining means further fitting about the first portion of the nozzle.
Claim 2
Dependent Claim
390 words
1 . A plural component dispensing apparatus for dispensing a foam formed from the impingement mixing of plural components comprising, in combination: (a) a valve block with a hollow valving rod passage centrally positioned therein and flow port means for the fluid flow of the plural components therethrough; (b) a nozzle seat with a nozzle seat contact surface on a first end of the valve block, the nozzle seat being aligned with and having the valving rod passage extend thereinto; (c) a removable and deformable nozzle having a first portion and a second portion interconnected by a central portion and having a central, elongate bore extending therethrough aligned with the valving rod passage, the central portion having a first contact surface defining the terminus of the first portion and external thereof and an opposing second contact surface defining the terminus of the second portion and external thereof, the second contact surface further fitting together with the nozzle seat contact surface when force is applied against the first contact surface; (d) at least two plural component nozzle inlet ports in the central portion extending therethrough and opening into the bore, the nozzle inlet ports conveying the plural components from the flow port means into the bore; (e) a valving rod reciprocably movable within the valving rod passage and.the bore between a first position extending forwardly of the nozzle inlet ports to shut off the flow of plural components and a second position rearwardly of the nozzle inlet ports to permit the flow of plural components into the bore; (f) a mixing chamber within the bore of the nozzle defined by the second position of the valving rod and the opening of the nozzle inlet ports into the bore for the impingement mixing of the plural components; (g) cylinder means connectable to an opposing second end of the valve block to reciprocatingly actuate the valving rod; (h) plural component supply means to supply at least two plural components to the valve block; and (i) nozzle retaining means removably connectable to the nozzle seat adjustable to exert a force against the first contact nozzle surface to load the nozzle and the nozzle second contact surface against the contact surface of the nozzle seat to hold the nozzle securely in place, the nozzle retaining means further fitting about the first portion of the nozzle.
Claim 3
Dependent Claim
18 words
The apparatus according to Claim 1 wherein the nozzle seat further has an alignment pin extending outwardly therefrom.
Claim 4
Dependent Claim
45 words
3 . The apparatus according to Claim 2 wherein the central portion of the nozzle, has a pin alignment recess therein to permit the nozzle to be properly seated within the nozzle seat and aligned with the at least two plural component nozzle inlet ports.
Claim 5
Dependent Claim
24 words
The apparatus according to Claim 1, 2 or 3 wherein the nozzle retaining means is an end cap that screws onto the nozzle seat.
Claim 6
Dependent Claim
18 words
5 . The apparatus according to any preceding claim wherein the nozzle seat contact surface is substantially frusto-conical.
Claim 7
Dependent Claim
17 words
6 . The apparatus according to Claim 5 wherein the second contact surface is substantially . frusto-conical.
Claim 8
Dependent Claim
24 words
7 . The apparatus according to any preceding claim wherein the second contact surface is substantially flat and the central portion is substantially cylindrical.
Claim 9
Dependent Claim
22 words
The apparatus according to Claim 7 wherein the nozzle seat is substantially cylindrical and the nozzle seat contact surface is substantially flat.
Claim 10
Independent Claim
17 words
The apparatus according to any preceding claim wherein the first portion of the nozzle is substantially cylindrical.
Claim 11
Dependent Claim
16 words
The apparatus according to Claim 9 wherein the second portion of the nozzle is substantially cylindrical.
Claim 12
Independent Claim
17 words
The apparatus according to any preceding claim wherein the nozzle is formed from a low friction material.
Claim 13
Dependent Claim
17 words
12 . The apparatus according to any preceding claim wherein the nozzle is formed from a fluoropolymer.
Claim 14
Independent Claim
20 words
The apparatus according to any preceding claim wherein the valving rod is at least coated with a low friction material.
Claim 15
Dependent Claim
27 words
14 . The apparatus according to any preceding claim wherein the cylinder means further comprises a pneumatically driven piston to which the valving rod is removably connected.
Claim 16
Dependent Claim
28 words
15 . The apparatus according to Claim 14 wherein the cylinder means further comprises a retaining rod that is removably connectable to the piston and the valving rod.
Claim 17
Dependent Claim
29 words
The apparatus according to Claim 15 wherein the cylinder means further comprises a hollow shaft about which the piston is mounted and through which the retaining rod is inserted.
Claim 18
Dependent Claim
19 words
The apparatus according to Claim 15 or 16 wherein the retaining rod is removably connected to a lock knob.
Claim 19
Dependent Claim
39 words
18 . The apparatus according to Claim 17 wherein the cylinder means further comprises an open ended cylinder within which are placed the assembled valving rod, retaining rod, hollow shaft with the piston mounted thereon, and the lock knob.
Claim 20
Dependent Claim
28 words
19 . The apparatus according to Claim 18 wherein the hollow shaft further has a cylinder rear end cap mounted thereabout between the piston and the lock knob.
Claim 21
Dependent Claim
21 words
The apparatus according to Claim 1 9 wherein the open ended cylinder has an end closure cap to close the cylinder.
Claim 22
Dependent Claim
179 words
21 . A deformable nozzle in which plural components are mixed for use in a plural component dispensing apparatus having: (a) a central elongate bore; (b) a first nozzle portion circumscribing a portion of the bore; (c) a second nozzle portion circumscribing a second portion of the bore; (d) a central nozzle portion circumscribing a third portion of the bore having a first contact surface at the terminus of the first nozzle portion and an opposing second contact surface at the terminus of the second nozzle portion, the central portion connecting the first nozzle portion and the second nozzle portion, the first contact surface being external to the first nozzle portion and the second contact surface being external to the second nozzle portion; and (e) at least two plural component. inlet ports in the central nozzle portion extending therethrough and opening into the bore thereby defining at the opening of each inlet port an impingement mixing chamber for the plural components, the plural component inlet ports further being oriented at an angle to the bore in a horizontal plane.
Claim 23
Dependent Claim
179 words
21 . A deformable nozzle in which plural components are mixed for use in a plural component dispensing apparatus having: (a) a central elongate bore; (b) a first nozzle portion circumscribing a portion of the bore; (c) a second nozzle portion circumscribing a second portion of the bore; (d) a central nozzle portion circumscribing a third portion of the bore having a first contact surface at the terminus of the first nozzle portion and an opposing second contact surface at the terminus of the second nozzle portion, the central portion connecting the first nozzle portion and the second nozzle portion, the first contact surface being external to the first nozzle portion and the second contact surface being external to the second nozzle portion; and (e) at least two plural component. inlet ports in the central nozzle portion extending therethrough and opening into the bore thereby defining at the opening of each inlet port an impingement mixing chamber for the plural components, the plural component inlet ports further being oriented at an angle to the bore in a horizontal plane.
Claim 24
Dependent Claim
22 words
A nozzle according to Claim 21 wherein the nozzle has one or more of the features defined in Claims 5-7 and 9-12.
Claim 25
Dependent Claim
19 words
A nozzle according to Claim 21 or 22 wherein the central nozzle portion has a pin alignment recess therein.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.