US4669455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tractor for the treatment of deformities of the spine
Assignee: Co PRO
•
Filing: 1985-02-05
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Granted: 1987-06-02
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Expires: 2005-02-05
Abstract
Abstract A tractor for the treatment of deformities of the spine comprises a plate of rigid material such as plastic having a raised peripheral rib extending outwardly from the plate in the form of an elongated figure 8 which encloses a substantially cylindrical end portion at each end interconnected by a central connecting portion space which is covered by a flexible elastic membrane so as to form two airtight chamber portions at each end and a narrow central connecting portion which communicates therebetween. The end portions may be inflated outwardly with the use of a portable hand pump or bellows connected thereto and the device is adapted to be engaged with a brace applied around the person's body.
Inventors
- 👤 Patrizia Bellati
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:28
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/02; A61F5/028; A61F5/30; A61F5/34; A63; A63B; A63B2225/00; A63B2225/62
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
A tractor for the treatment of deformities of the spine, comprising a plate of rigid material, a raised rib extending outwardly from one side of said plate and having the form of an elongated figure eight including substantially cylindrical end portions and a narrow central connecting portion space, a flexible and elastic membrane covering the space and defining with said rib and said plate two end portion airtight chambers and a narrow central passage connecting portion communicating between said end portion airtight chambers, each of the air-tight portion chambers being inflatable so that they extend outwardly from said raised rib.
Claim 2
Dependent Claim
100 words
A tractor for the treatment of deformities of the spine, comprising a plate of rigid material, a raised rib extending outwardly from one side of said plate and having the form of an elongated figure eight including substantially cylindrical end portions and a narrow central connecting portion space, a flexible and elastic membrane covering the space and defining with said rib and said plate two end portion airtight chambers and a narrow central passage connecting portion communicating between said end portion airtight chambers, each of the air-tight portion chambers being inflatable so that they extend outwardly from said raised rib.
Claim 3
Dependent Claim
21 words
A tractor according to claim 1, including an air intake connected to one of said chambers and passing through said plate.
Claim 4
Dependent Claim
24 words
A tractor according to claim 2, wherein said air intake is of a rigid material and forms an attachment for a rubber connecting tube.
Claim 5
Dependent Claim
27 words
A tractor according to claim 3, including a hand pump connected to a tube which is connected to said air intake, said pump having a deflating valve.
Claim 6
Dependent Claim
160 words
Process for treating deformities of the spine to provide vertically longitudinal traction, which comprises providing a tractor having a plate of rigid material, a raised rib extending outwardly from one side of said plate and having the form of an elongated figure eight including substantially cylindrical end portions and a narrow central connecting portion space, a flexible and elastic membrane covering the space and defining with said rib and said plate two end portion airtight chambers and a narrow central passage connecting portion communicating between said end portion airtight chambers, each of the airtight portion chambers being inflatable so that they extend outwardly from said raised rib, vertically longitudinally aligning the side of the plate having the inflatable chambers with the spine of the person to be treated, in the area requiring traction, and closing the tractor by a corset, and thereafter inflating the chambers to cause them to bear against the spine, whereby to provide such vertically longitudinal traction.
Claim 7
Dependent Claim
160 words
Process for treating deformities of the spine to provide vertically longitudinal traction, which comprises providing a tractor having a plate of rigid material, a raised rib extending outwardly from one side of said plate and having the form of an elongated figure eight including substantially cylindrical end portions and a narrow central connecting portion space, a flexible and elastic membrane covering the space and defining with said rib and said plate two end portion airtight chambers and a narrow central passage connecting portion communicating between said end portion airtight chambers, each of the airtight portion chambers being inflatable so that they extend outwardly from said raised rib, vertically longitudinally aligning the side of the plate having the inflatable chambers with the spine of the person to be treated, in the area requiring traction, and closing the tractor by a corset, and thereafter inflating the chambers to cause them to bear against the spine, whereby to provide such vertically longitudinal traction.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |