US3890691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing an apparatus for hydro-therapeutic treatment
Assignee: MONTAGNE JEAN#BAPTISTE
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Filing: 1974-07-08
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Granted: 1975-06-24
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Expires: 1994-07-08
Abstract
Abstract A method of producing an apparatus for hydrotherapeutic treatment having a vessel provided with a channel of integral double-walled structure, in which a plurality of inserts are fixed in apertures of a mold wall having an outer surface corresponding to the inner surface of the vessel so that the inserts project upwardly from the mold wall, whereafter a first layer of hardenable plastic material is applied, preferably by spraying, to the outer mold wall surface with the inserts projecting beyond this layer. Subsequently thereto an elongated plug of material having a low melting point, such as bee wax or paraffine, provided with openings through and beyond which said inserts extend is placed on the outer surface of the first layer and an additional layer of plastic material is applied over the free outer surface of the plug while the first layer is still in plastic condition so that the additional layer is integrally joined to the first layer. After hardening of the layers the inserts are removed to provide in the two layers openings corresponding to surface portions of the inserts. The aforementioned plug is then removed by melting the material thereof to thus provide on the vessel a channel, and nozzles having surface portions identical with those of the inserts are then placed in the openings previously occupied by the inserts; and an apparatus produced by the aforementioned method.
Inventors
- 👤 Jean-Baptiste Montagne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:22
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/86; A; A61; A61H; A61H33/00; A61H33/02; A61H33/027; Y; Y10; Y10S; Y10S264/00; Y10S264/72; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/4998; Y10T29/49982
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
231 words
A method of producing a vessel for a sanitary apparatus, especially an apparatus for hydro-therapeutic treatment, having channels of integral double-walled structure, comprising the steps of providing a mold having a wall with an outer surface corresponding to the inner surface of the vessel to be produced and being formed in the wall thereof with a row of apertures; placing said mold on a support with the outer surface facing upwardly; fixing coaxially with each of said apertures an insert projecting beyond said outer surface; applying onto said outer surface a first layer of hardenable or polymerizable plastic material with said inserts projecting beyond said first layer; placing on each row of inserts an elongated plug of meltable or dissolvable material having the form of the channel to be produced and provided with passages through which said inserts respectively extend; applying onto the outer surface of said elongated plug an additional layer of plastic material, while said first layer is still in plastic condition, so as to join said additional layer to said first layer; removing said inserts after said layers have hardened to provide in said layers openings corresponding to surface portions of said inserts; removing said elongated plug by melting or dissolving the material thereof; and placing nozzle members having outer surface portions identical with said surface portions of said inserts into said openings previously occupied by said inserts.
Claim 2
Independent Claim
231 words
A method of producing a vessel for a sanitary apparatus, especially an apparatus for hydro-therapeutic treatment, having channels of integral double-walled structure, comprising the steps of providing a mold having a wall with an outer surface corresponding to the inner surface of the vessel to be produced and being formed in the wall thereof with a row of apertures; placing said mold on a support with the outer surface facing upwardly; fixing coaxially with each of said apertures an insert projecting beyond said outer surface; applying onto said outer surface a first layer of hardenable or polymerizable plastic material with said inserts projecting beyond said first layer; placing on each row of inserts an elongated plug of meltable or dissolvable material having the form of the channel to be produced and provided with passages through which said inserts respectively extend; applying onto the outer surface of said elongated plug an additional layer of plastic material, while said first layer is still in plastic condition, so as to join said additional layer to said first layer; removing said inserts after said layers have hardened to provide in said layers openings corresponding to surface portions of said inserts; removing said elongated plug by melting or dissolving the material thereof; and placing nozzle members having outer surface portions identical with said surface portions of said inserts into said openings previously occupied by said inserts.
Claim 3
Dependent Claim
33 words
A method as defined in claim 1, and including the step of holding said additional layer during its hardening by distance pieces attached to portions of said inserts projecting beyond said additional layer.
Claim 4
Dependent Claim
24 words
A method as defined in claim 1, wherein said first and said additional layer are constituted by a mixture of polyester and glass fibers.
Claim 5
Dependent Claim
23 words
A method as defined in claim 3, wherein said mixture is spread onto the outer surface of said mold and said elongated plug.
Claim 6
Dependent Claim
17 words
A method as defined in claim 1, wherein said elongated plug is molded with said passages therethrough.
Claim 7
Dependent Claim
26 words
A method as defined in claim 1, wherein said inserts are fixed to said mold by screws extending through said apertures and screwed into said insert.
Claim 8
Dependent Claim
21 words
A method as defined in claim 1, wherein each of said inserts is formed with a main portion of frustoconical configuration.
Claim 9
Dependent Claim
36 words
A method as defined in claim 7, wherein each of said inserts is formed with an end portion engaging the mold and being of frustoconical configuration and of a greater cone angle than said main portion.
Claim 10
Dependent Claim
39 words
A method as defined in claim 2, wherein said distance pieces are constituted by collars engaging the outer surface of said additional layer and fixed to the portions of said inserts projecting beyond said additional layer by holding members.
Claim 11
Dependent Claim
25 words
A method as defined in claim 9, wherein said holding members are snap rings engaged in grooves provided in said projecting portions of said inserts.
Claim 12
Dependent Claim
21 words
A method as defined in claim 1, wherein said elongated plug is formed from a material having a low melting point.
Claim 13
Dependent Claim
21 words
A method as defined in claim 11, wherein said material is taken from the group consisting of bee wax and paraffine.
Claim 14
Dependent Claim
70 words
A method as defined in claim 1, wherein said elongated plug has at least on one end thereof a cylindrical extention, and including the step of placing a tube onto said cylindrical extention, and wherein a portion of said additional layer is applied about said tube to anchor the latter in a portion of said additional layer with said tube communicating with the channel formed after removal of said plug.
Claim 15
Dependent Claim
14 words
A method as defined in claim 13, wherein said tube is formed from metal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |