US3830676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making a contoured thermal device
Assignee: Acurex Corp
•
Filing: 1973-02-28
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Granted: 1974-08-20
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Expires: 1993-02-28
Abstract
Abstract Heating and cooling patch in which liquid conducting passageways are formed between superposed sheets of flexible material. In one embodiment, tapered dart-shaped areas are provided at the edges of the sheets for forming the patch to a desired contour. In another embodiment, the patch is heat formed to the desired contour.
Inventors
- 👤 W Elkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:55
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; B; B29; B29D; B29D22/00; B29D22/003; B29D22/006; A61F2007/0001; A61F2007/0002; A61F2007/0008; A61F2007/0054; A61F2007/0268; A61F2007/0273; Y; Y10; Y10T; Y10T428/00; Y10T428/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
In a process for making a contoured thermal device adapted to carry a circulating liquid for maintaining a body to which the device is applied at a predetermined temperature, the steps of superposing two flat sheets of a flexible material, sealing the sheets together along their edges and along lines intermediate said edges to form plenum chambers along two oppositely disposed edges and a plurality of flow passages extending between said plenum chambers, providing a fluid inlet and a fluid outlet in communication with the plenum chambers, forming at least one tapered dart-shaped area extending inwardly from an edge of the sheets, and thereafter drawing the edges of the sheets together along the edges of the dart-shaped area and sealing the edges of the sheets together along the edges of the dart-shaped area.
Claim 2
Dependent Claim
133 words
In a process for making a contoured thermal device adapted to carry a circulating liquid for maintaining a body to which the device is applied at a predetermined temperature, the steps of superposing two flat sheets of a flexible material, sealing the sheets together along their edges and along lines intermediate said edges to form plenum chambers along two oppositely disposed edges and a plurality of flow passages extending between said plenum chambers, providing a fluid inlet and a fluid outlet in communication with the plenum chambers, forming at least one tapered dart-shaped area extending inwardly from an edge of the sheets, and thereafter drawing the edges of the sheets together along the edges of the dart-shaped area and sealing the edges of the sheets together along the edges of the dart-shaped area.
Claim 3
Dependent Claim
33 words
A process for making a contoured thermal device as in claim 1 wherein the plenum chambers are tapered and the fluid inlet and outlet are provided at the larger ends of said chambers.
Claim 4
Dependent Claim
61 words
A process for making a contoured thermal device as in claim 1 wherein the dart-shaped area cuts through one of the plenum chambers and the drawn together edges of the sheets are sealed together along the edges of the dart-shaped area in such manner that the plenum chamber extends across the drawn together area to provide uninterrupted flow across said area.
Claim 5
Dependent Claim
61 words
A process for making a contoured thermal device as in claim 1 wherein the dart-shaped area cuts through one of the flow passages and the drawn together edges of the sheets are sealed together along the edges of the dart-shaped area in such manner that the flow passage extends across the drawn together area to provide uninterrupted flow across said area.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |