US3753823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a water mattress
Assignee: DLM PLASTICS Corp A CORP OF OH
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Filing: 1972-03-02
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Granted: 1973-08-21
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Expires: 1992-03-02
Abstract
Abstract A method of manufacturing a water filled mattress is disclosed. A vinyl chloride sheet is pattern cut to a desired configuration, folded upon itself to form an envelope having top and bottom layers and one integral continuous sidewall, and sealed around overlapping adjoining edges of the layers on three sides. The resulting lapped seams form a water-tight integral sidewall on the envelope. The new method of construction includes steps for electrically welding the lapped seams and electrically bonding sealable air outlet and water inlet fittings in the surface of the envelope.
Inventors
- 👤 R Kuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:54
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/085; Y; Y10; Y10S; Y10S5/00; Y10S5/932; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1051; Y10T156/1052; Y10T156/1056
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
181 words
A method of manufacturing a totally enclosed envelope of a thermoplastic sheet material having a top surface, a bottom surface, vertical sidewalls, overlapping seams along said vertical sidewalls and at least one inlet connection, the steps comprising: 1. cutting a thermoplastic sheet into a generally rectangular shape; 2. folding said cut sheet upon itself to form an envelope having a first layer and a second layer defining said top surface and said bottom surface; 3. cutting an opening in one of said layers for receiving said inlet; 4. overlapping a first set of edges of said first and second layers for forming a lapped seam along one side of said envelope; 5. inserting a sealing means between said first and second layers behind said lapped sEam, and sealing said seam along said means with a welding electrode, and removing said means; 6. repeating steps (4) and (5) above on the remaining two sides of said envelope; 7. sealing the vertical corners between adjacent sides of said envelope; and 8. sealing an inlet connection within said opening to provide a watertight envelope.
Claim 2
Independent Claim
181 words
A method of manufacturing a totally enclosed envelope of a thermoplastic sheet material having a top surface, a bottom surface, vertical sidewalls, overlapping seams along said vertical sidewalls and at least one inlet connection, the steps comprising: 1. cutting a thermoplastic sheet into a generally rectangular shape; 2. folding said cut sheet upon itself to form an envelope having a first layer and a second layer defining said top surface and said bottom surface; 3. cutting an opening in one of said layers for receiving said inlet; 4. overlapping a first set of edges of said first and second layers for forming a lapped seam along one side of said envelope; 5. inserting a sealing means between said first and second layers behind said lapped sEam, and sealing said seam along said means with a welding electrode, and removing said means; 6. repeating steps (4) and (5) above on the remaining two sides of said envelope; 7. sealing the vertical corners between adjacent sides of said envelope; and 8. sealing an inlet connection within said opening to provide a watertight envelope.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein said inlet connection is sealed to said one layer by
Claim 4
Dependent Claim
26 words
folding said cut sheet upon itself to form an envelope having a first layer and a second layer defining said top surface and said bottom surface;
Claim 5
Dependent Claim
26 words
folding said cut sheet upon itself to form an envelope having a first layer and a second layer defining said top surface and said bottom surface;
Claim 6
Dependent Claim
17 words
placing said inlet connection over said aperture upon said one side with said flange surrounding said aperture;
Claim 7
Dependent Claim
17 words
placing said inlet connection over said aperture upon said one side with said flange surrounding said aperture;
Claim 8
Dependent Claim
26 words
folding said cut sheet upon itself to form an envelope having a first layer and a second layer defining said top surface and said bottom surface;
Claim 9
Dependent Claim
26 words
folding said cut sheet upon itself to form an envelope having a first layer and a second layer defining said top surface and said bottom surface;
Claim 10
Dependent Claim
12 words
cutting an opening in one of said layers for receiving said inlet;
Claim 11
Dependent Claim
12 words
cutting an opening in one of said layers for receiving said inlet;
Claim 12
Dependent Claim
27 words
sandwiching said flange and said envelope side with the interadjacent buffer sheet between a pair of sealing electrodes extending around said flange to encompass said aperture; and
Claim 13
Dependent Claim
27 words
sandwiching said flange and said envelope side with the interadjacent buffer sheet between a pair of sealing electrodes extending around said flange to encompass said aperture; and
Claim 14
Independent Claim
37 words
A method of manufacturing a totally enclosed envelope of a thermoplastic sheet material having a top surface, a bottom surface, vertical sidewalls, overlapping seams along said vertical sidewalls and at least one inlet connection, the steps comprising:
Claim 15
Independent Claim
37 words
A method of manufacturing a totally enclosed envelope of a thermoplastic sheet material having a top surface, a bottom surface, vertical sidewalls, overlapping seams along said vertical sidewalls and at least one inlet connection, the steps comprising:
Claim 16
Dependent Claim
12 words
cutting an opening in one of said layers for receiving said inlet;
Claim 17
Dependent Claim
12 words
cutting an opening in one of said layers for receiving said inlet;
Claim 18
Dependent Claim
23 words
overlapping a first set of edges of said first and second layers for forming a lapped seam along one side of said envelope;
Claim 19
Dependent Claim
23 words
overlapping a first set of edges of said first and second layers for forming a lapped seam along one side of said envelope;
Claim 20
Dependent Claim
25 words
activating said sealing electrode to seal said flange to said one side with said buffer sheet preventing said envelope sides from sealing to one another.
Claim 21
Dependent Claim
25 words
activating said sealing electrode to seal said flange to said one side with said buffer sheet preventing said envelope sides from sealing to one another.
Claim 22
Independent Claim
31 words
A method of sealing an inlet connection having an integrally formed sealing flange upon an aperture in one side of an envelope of a thermoplastic sheet material comprising the steps of:
Claim 23
Independent Claim
31 words
A method of sealing an inlet connection having an integrally formed sealing flange upon an aperture in one side of an envelope of a thermoplastic sheet material comprising the steps of:
Claim 24
Dependent Claim
23 words
overlapping a first set of edges of said first and second layers for forming a lapped seam along one side of said envelope;
Claim 25
Dependent Claim
23 words
overlapping a first set of edges of said first and second layers for forming a lapped seam along one side of said envelope;
Claim 26
Dependent Claim
29 words
inserting a sealing means between said first and second layers behind said lapped seam, and sealing said seam along said means with a welding electrode and removing said means;
Claim 27
Dependent Claim
29 words
inserting a sealing means between said first and second layers behind said lapped seam, and sealing said seam along said means with a welding electrode and removing said means;
Claim 28
Dependent Claim
29 words
inserting a sealing means between said first and second layers behind said lapped sEam, and sealing said seam along said means with a welding electrode, and removing said means;
Claim 29
Dependent Claim
29 words
inserting a sealing means between said first and second layers behind said lapped sEam, and sealing said seam along said means with a welding electrode, and removing said means;
Claim 30
Dependent Claim
14 words
repeating steps (4) and (5) above on the remaining two sides of said envelope;
Claim 31
Dependent Claim
14 words
repeating steps (4) and (5) above on the remaining two sides of said envelope;
Claim 32
Dependent Claim
14 words
repeating steps (4) and (5) above on the remaining two sides of said envelope;
Claim 33
Dependent Claim
14 words
repeating steps (4) and (5) above on the remaining two sides of said envelope;
Claim 34
Dependent Claim
20 words
overlapping adjoining edges of said vertical slits with a vertical strip of thermoplastic material to form a lapped seam therealong;
Claim 35
Dependent Claim
20 words
overlapping adjoining edges of said vertical slits with a vertical strip of thermoplastic material to form a lapped seam therealong;
Claim 36
Dependent Claim
11 words
sealing the vertical corners between adjacent sides of said envelope; and
Claim 37
Dependent Claim
11 words
sealing the vertical corners between adjacent sides of said envelope; and
Claim 38
Dependent Claim
12 words
sealing an inlet connection within said opening to provide a watertight envelope.
Claim 39
Dependent Claim
12 words
sealing an inlet connection within said opening to provide a watertight envelope.
Claim 40
Dependent Claim
41 words
inserting an electric sealing means through said opening in said one layer, between said first and second layers, behind said lapped seams of said vertical slits, and sealing said seams along said means with a welding electrode and removing said means;
Claim 41
Dependent Claim
41 words
inserting an electric sealing means through said opening in said one layer, between said first and second layers, behind said lapped seams of said vertical slits, and sealing said seams along said means with a welding electrode and removing said means;
Claim 42
Dependent Claim
22 words
inserting a buffer sheet of a non-compatible material through said opening for receiving said inlet connections, between said first and second layers;
Claim 43
Dependent Claim
22 words
inserting a buffer sheet of a non-compatible material through said opening for receiving said inlet connections, between said first and second layers;
Claim 44
Dependent Claim
17 words
inserting a buffer sheet of a non-compatible material through said opening between said first and second layers;
Claim 45
Dependent Claim
17 words
inserting a buffer sheet of a non-compatible material through said opening between said first and second layers;
Claim 46
Dependent Claim
12 words
placing said inlet connection over said opening in said first layer and;
Claim 47
Dependent Claim
12 words
placing said inlet connection over said opening in said first layer and;
Claim 48
Dependent Claim
8 words
placing said inlet and connection over said opening;
Claim 49
Dependent Claim
8 words
placing said inlet and connection over said opening;
Claim 50
Dependent Claim
54 words
sandwiching said envelope, inlet and buffer sheet interadjacent said layers and below said inlet between adjacent poles of an electronic welding apparatus to bond said inlet over said opening in said one layer; whereby said buffer sheet between said first and second layers prevent a sealing of said first layer to said second layer.
Claim 51
Dependent Claim
54 words
sandwiching said envelope, inlet and buffer sheet interadjacent said layers and below said inlet between adjacent poles of an electronic welding apparatus to bond said inlet over said opening in said one layer; whereby said buffer sheet between said first and second layers prevent a sealing of said first layer to said second layer.
Claim 52
Dependent Claim
73 words
placing said envelope over one pole of a welding electrode under said opening, sealing said connection to said opening in said one layer with a second welding electrode placed over said connection; whereby said polyvinyl sheet between said first and second layers accommodates sealing of said connections to said first layer but prevents a corresponding sealing of said first layer to said second layer and whereby a sealed watertight fillable mattress is formed.
Claim 53
Dependent Claim
73 words
placing said envelope over one pole of a welding electrode under said opening, sealing said connection to said opening in said one layer with a second welding electrode placed over said connection; whereby said polyvinyl sheet between said first and second layers accommodates sealing of said connections to said first layer but prevents a corresponding sealing of said first layer to said second layer and whereby a sealed watertight fillable mattress is formed.
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |