EP0028071A1
Expired / Lapsed
EP
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Apparatus for dispensing mastic material
Assignee: Individual
•
Filing: 1980-09-24
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Granted: —
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Expires: 2000-09-24
Abstract
Abstract Apparatus for dispensing mastic material such as butyl mastic sealant consists of a container or hopper (1) for receiving the mastic material and which is arranged to be heated to soften the material for feeding to an outlet (50) by feeding means shown in the form of an Archimedean screw (3) in a lower receptacle (10). A pre-heating coil (2) is shown provided in the hopper (1) and a major part of the latter and the lower receptacle (10) are contained in a tank (4) containing a heating fluid such as oil heated by immersion heaters (40). A reduced continuation (33) of the screw (3) operates in a barrel (5) for force feed of the heat softened mastic material to the outlet (50). An applicator nozzle or gun (7) is connected by a hose (6) to the outlet (50). Both the hose (6) and gun (7) are provided with heating means to maintain the mastic material in a required softened condition up to the point of issue from the gun (7).
Inventors
- 👤 Thomas John Wood
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:13
CPC Classifications
B; B05; B05C; B05C21/00; B05C17/00; B05C17/002; B05C17/005; B05C17/00523; B05C9/00; B05C9/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
46 words
Apparatus for dispensing mastic material comprises a container for receiving mastic material; heating means for heating the mastic material in the container in order to soften said material, and feeding means within said container for feeding the softened mastic material from the container to an outlet.
Claim 2
Dependent Claim
46 words
Apparatus for dispensing mastic material comprises a container for receiving mastic material; heating means for heating the mastic material in the container in order to soften said material, and feeding means within said container for feeding the softened mastic material from the container to an outlet.
Claim 3
Dependent Claim
36 words
Apparatus for dispensing mastic material according to claim 1 wherein the feeding means consists of at least one screw such as an Archimedean screw for imparting feeding movement to heat softened mastic material in the container.
Claim 4
Dependent Claim
38 words
Apparatus for dispensing mastic material according to claims 1 and 2 wherein a continuation of the screw operates in a chamber or barrel to the container for maintaining force feed of the softened mastic material to the outlet.
Claim 5
Dependent Claim
40 words
Apparatus for dispensing mastic material according to claim 1, 2 or 3 wherein the container consists of, or is provided with, a hopper for charging it with mastic material, which hopper contains heating means for pre-heating mastic material received therein.
Claim 6
Dependent Claim
82 words
Apparatus for dispensing mastic material according to any of claims 1 to 4 wherein a pipe or flexible hose is connected to the outlet for passage of the softened mastic material to a gun or nozzle for application of th4 softened mastic material issuing from the nozzle or gun, the pipe or hose and nozzle or gun being provided with heating means for maintaining the mastic material in a softened condition up to the point of issue from the nozzle or gun.
Claim 7
Dependent Claim
74 words
Apparatus for dispensing mastic material according to any of claims 1 to 5 wherein by-pass return flow means is provided from adjacent the said outlet back to the container or hopper, which by-pass return means is provided with a regulator valve for variably setting return flow of softened mastic material back to the container and re-circulation by the feeding means in obtaining a required rate of delivery of softened mastic material from the apparatus.
Claim 8
Dependent Claim
67 words
Apparatus for dispensing mastic material according to any of the preceding claims wherein the container or hopper and any chamber or barrel thereto is or are at least partly contained in a tank for containing a fluid such as oil which in use is heated to maintain the mastic material in the container or hopper and in any feed chamber or barrel in the required softened condition.
Claim 9
Dependent Claim
35 words
Apparatus for dispensing mastic material according to claim 4 wherein the pre-heating means in the container or hopper consists of at least one tubular coil through which heating fluid such as oil can be circulated.
Claim 10
Dependent Claim
30 words
Apparatus for dispensing mastic material according to claim 5 wherein operation of the feeding means is controlled by a control member such as a trigger on the gun or nozzle.
Claim 11
Dependent Claim
41 words
Apparatus for dispensing mastic material according to claim 9 wherein the control member or trigger is also arranged to operate an outlet valve of the nozzle or gun so as to open the valve and bring into operation the feeding means.
References Cited (Backward Citations)
GB654971A
Cited
FR1160385A
Cited
GB1234188A
Cited
GB1279031A
Cited
FR2126591A5
Cited
DE2222410A1
Cited
DE2414895A1
Cited
DE2809228A1
Cited
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