Patent US4408599A successfully refreshed from Google Patents.
US4408599A
Expired / Lapsed
US
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Apparatus for pneumatically controlling a dynamic pressure wave device
Assignee: BSN Jobst Inc
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Filing: 1981-08-03
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Granted: 1983-10-11
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Expires: 2001-08-03
Abstract
Abstract A source of pressurized gas is attached to a dynamic pressure wave appliance. The pneumatic control circuit connects the source of pressurized gas to a first chamber of the appliance. When the pressure in the first chamber reaches a first predetermined level, a valve seals the first chamber and connects the source so as to inflate a second chamber about the first. When the pressure in the second chamber reaches a second predetermined level, a valve permits the first chamber to deflate while continuing to connect the second chamber for inflation. A valve for sealing the inflated sleeve discontinues the inflation of the sleeve when the pressure therein reaches a third predetermined level. The sequence of operation of the pneumatic control circuit will cause a suitable dynamic pressure wave appliance to apply a pressure to a human or animal extremity which begins at the most distant end and travels up the extremity in the nature of a pressure wave.
Inventors
- 👤 Thomas A. Mummert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:53
CPC Classifications
A; A61; A61H; A61H9/00; A61H9/005; A61H9/0078; A61H2201/00; A61H2201/50; A61H2201/5058; A61H2201/5071; A61H2201/5074
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
179 words
In an apparatus intended for use in applying compressive pressure to a mammal extremity including a first inflatable chamber surrounding the extremity, a second inflatable chamber enclosing the first chamber, and a pneumatic control means pneumatically connected to the first and second chambers for inflating and deflating the chambers from a source of pressurized gas such that the chambers apply compressive pressure to the extremity, a pneumatic control means comprising: means for connecting a source of pressurized gas to a first chamber so as to inflate the first chamber; means for disconnecting the source from the first chamber so as to seal the first chamber and for connecting the source to a second chamber so as to inflate the second chamber when the pressure within the first chamber reaches a first predetermined level; and means for disconnecting the source from the first chamber so as to deflate the first chamber while continuing to connect the source to the second chamber so as to inflate the second chamber when the pressure within the second chamber reaches a second predetermined level.
Claim 2
Dependent Claim
179 words
In an apparatus intended for use in applying compressive pressure to a mammal extremity including a first inflatable chamber surrounding the extremity, a second inflatable chamber enclosing the first chamber, and a pneumatic control means pneumatically connected to the first and second chambers for inflating and deflating the chambers from a source of pressurized gas such that the chambers apply compressive pressure to the extremity, a pneumatic control means comprising: means for connecting a source of pressurized gas to a first chamber so as to inflate the first chamber; means for disconnecting the source from the first chamber so as to seal the first chamber and for connecting the source to a second chamber so as to inflate the second chamber when the pressure within the first chamber reaches a first predetermined level; and means for disconnecting the source from the first chamber so as to deflate the first chamber while continuing to connect the source to the second chamber so as to inflate the second chamber when the pressure within the second chamber reaches a second predetermined level.
Claim 3
Dependent Claim
39 words
A pneumatic control circuit in accordance with claim 1 including means for disconnecting the source from the second chamber so as to seal the inflated second chamber when the pressure within the second chamber reaches a third predetermined level.
Claim 4
Dependent Claim
34 words
A pneumatic control circuit in accordance with claim 2 including means for disconnecting the source from the first and second chambers so as to deflate the first and second chambers after a predetermined time.
Claim 5
Dependent Claim
38 words
A pneumatic control circuit in accordance with claim 3 wherein said means for connecting and disconnecting the source from the first and second chambers includes valve means pneumatically connected between the source and the first and second chambers.
Claim 6
Dependent Claim
34 words
A pneumatic control circuit in accordance with claim 1 wherein said means for connecting the source of pressurized gas to the first chamber includes reservoir means for storing a volume of gas under pressure.
Claim 7
Dependent Claim
42 words
A pneumatic control circuit in accordance with claim 1 wherein said means for connecting the source of pressurized gas to the first chamber includes damper means for regulating the rate of flow of pressurized gas between the source and the first chamber.
Claim 8
Dependent Claim
42 words
A pneumatic control circuit in accordance with claim 1 wherein said means for connecting the source of pressurized gas to the second chamber includes damper means for regulating the rate of flow of pressurized gas between the source and the second chamber.
Claim 9
Dependent Claim
37 words
A pneumatic control circuit in accordance with claim 1 wherein said means for deflating the first chamber includes damper means for regulating the rate of flow of pressurized gas between the first chamber and an exhaust port.
Claim 10
Dependent Claim
36 words
A pneumatic control circuit in accordance with claim 8 wherein said means for deflating the first chamber includes check valve means for permitting the one-way flow of gas from the first chamber to said damper means.
Claim 11
Dependent Claim
35 words
A pneumatic control circuit in accordance with claim 1 including means for equalizing the pressures between the first and second chambers when the pressure in the first chamber exceeds the pressure in the second chamber.
Claim 12
Dependent Claim
31 words
A pneumatic control circuit in accordance with claim 10 wherein said equalizing means includes a check valve for permitting one-way flow of gas from the first chamber to the second chamber.
Claim 13
Dependent Claim
126 words
In an apparatus intended for use in applying compressive pressure to a mammal extremity including a first inflatable chamber surrounding the extremity, a second inflatable chamber enclosing the first chamber, and a pneumatic control means pneumatically connected to the first and second chambers for inflating and deflating the chambers from a source of pressurized gas such that the chambers apply compressive pressure to the extremity, a pneumatic control means comprising: means for inflating a first chamber; means for sealing the first chamber and for inflating a second chamber when the pressure within the first chamber reaches a first predetermined level; and means for deflating the first chamber while continuing to inflate the second chamber when the pressure within the second chamber reaches a second predetermined level.
Claim 14
Dependent Claim
126 words
In an apparatus intended for use in applying compressive pressure to a mammal extremity including a first inflatable chamber surrounding the extremity, a second inflatable chamber enclosing the first chamber, and a pneumatic control means pneumatically connected to the first and second chambers for inflating and deflating the chambers from a source of pressurized gas such that the chambers apply compressive pressure to the extremity, a pneumatic control means comprising: means for inflating a first chamber; means for sealing the first chamber and for inflating a second chamber when the pressure within the first chamber reaches a first predetermined level; and means for deflating the first chamber while continuing to inflate the second chamber when the pressure within the second chamber reaches a second predetermined level.
Claim 15
Dependent Claim
30 words
A pneumatic control circuit in accordance with claim 12 further including means for sealing the inflated second chamber when the pressure within the second chamber reaches a third predetermined level.
Claim 16
Dependent Claim
23 words
A pneumatic control circuit in accordance with claim 13 further including means for deflating the first and second chambers after a predetermined time.
References Cited (Backward Citations)
US2719986A
Cited
US2781041A
Cited
US2896612A
Cited
US3880149A
Cited
US4066084A
Cited
US3923053A
Cited
US4338923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |