Patent US4878622A successfully refreshed from Google Patents.
US4878622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Peristaltic voltage block
Assignee: ABB Flexible Automation Inc
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Filing: 1988-06-17
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Granted: 1989-11-07
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Expires: 2008-06-17
Abstract
Abstract A coating material dispensing system includes an electrostatic high potential supply having an output terminal on which the supply maintains a high electrostatic potential, a source of coating material, a dispenser for dispensing the coating material, and appropriate fluid and electric circuits for coupling the dispenser to the source of coating material and the output terminal to the dispenser to supply potential to the coating material dispensed by the dispenser. The fluid circuit coupling the dispenser to the source of coating material includes a peristaltic voltage block having multiple coils of a resilient conduit and a rotor for supporting means for contacting each coil at multiple contact points. The peristaltic voltage block substantially divides the flow of coating material to the dispenser into discrete slugs of coating material substantially to interrupt the electrical path through the coating material from the terminal to the coating material supply.
Inventors
- 👤 Chris M. Jamison
- 👤 Eric A. Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:32
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/14; B05B5/00; B05B5/16; B05B5/1608; B05B5/1616
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
126 words
A coating material dispensing system comprising an electrostatic high potential supply having an output terminal on which the supply maintains a high electrostatic potential, a source of coating material, a dispenser for dispensing the coating material, means for coupling the dispenser to the source of coating material, means for coupling the output terminal to the dispenser to supply potential to the coating material dispensed by the dispenser, and a peristaltic device having multiple coils of a resilient conduit and a rotor for supporting means for contacting each coil at multiple contact points for substantially dividing the coating material in the peristaltic device into discrete slugs of coating material substantially to interrupt the electrical path through the coating material from the terminal to the coating material supply.
Claim 2
Dependent Claim
126 words
A coating material dispensing system comprising an electrostatic high potential supply having an output terminal on which the supply maintains a high electrostatic potential, a source of coating material, a dispenser for dispensing the coating material, means for coupling the dispenser to the source of coating material, means for coupling the output terminal to the dispenser to supply potential to the coating material dispensed by the dispenser, and a peristaltic device having multiple coils of a resilient conduit and a rotor for supporting means for contacting each coil at multiple contact points for substantially dividing the coating material in the peristaltic device into discrete slugs of coating material substantially to interrupt the electrical path through the coating material from the terminal to the coating material supply.
Claim 3
Dependent Claim
67 words
The system of claim 1 wherein the peristaltic device comprises an inlet end for coupling to the source of coating material and an outlet end for coupling to the dispenser, and a housing having an interior wall against which the resilient conduit lies, the contacting means compressing the resilient conduit against the interior wall of the housing substantially to separate the coating material carried thereby into slugs.
Claim 4
Dependent Claim
34 words
The system of claim 2 wherein the interior wall is generally right circular cylindrical in configuration and the multiple coils of resilient conduit are formed into somewhat of a helix around the interior wall.
Claim 5
Dependent Claim
16 words
The system of claim 3 wherein the resilient conduit is generally flat when it is empty.
Claim 6
Dependent Claim
32 words
The system of claim 2 wherein the interior wall is generally frustoconical in configuration and the multiple coils of resilient conduit are formed somewhat into a spiral wrapped around the interior wall.
Claim 7
Dependent Claim
67 words
The system of claim 1 wherein the peristaltic device comprises an inlet end for coupling to the source of coating material and an outlet end for coupling to the dispenser, and a mandrel having an exterior wall against which the resilient conduit lies, the contacting means compressing the resilient conduit against the exterior wall of the mandrel substantially to separate the coating material carried thereby into slugs.
Claim 8
Dependent Claim
34 words
The system of claim 6 wherein the exterior wall is generally right circular cylindrical in configuration and the multiple coils of resilient conduit are formed into somewhat of a helix around the exterior wall.
Claim 9
Dependent Claim
141 words
A coating material dispensing system comprising an electrostatic high potential supply having an output terminal on which the supply maintains a high electrostatic potential, a source of coating material, a dispenser for dispensing the coating material, means for coupling the dispenser to the source of coating material, and means for coupling the output terminal to the dispenser to supply potential to the coating material dispensed by the dispenser, the means of coupling the dispenser to the source of coating material comprising a peristaltic voltage block having multiple coils of a resilient conduit and a rotor for supporting means for contacting each coil at multiple contact points for substantially dividing the flow of coating material to the dispenser into discrete slugs of coating material substantially to interrupt the electrical path through the coating material from the material to the coating material supply.
Claim 10
Dependent Claim
141 words
A coating material dispensing system comprising an electrostatic high potential supply having an output terminal on which the supply maintains a high electrostatic potential, a source of coating material, a dispenser for dispensing the coating material, means for coupling the dispenser to the source of coating material, and means for coupling the output terminal to the dispenser to supply potential to the coating material dispensed by the dispenser, the means of coupling the dispenser to the source of coating material comprising a peristaltic voltage block having multiple coils of a resilient conduit and a rotor for supporting means for contacting each coil at multiple contact points for substantially dividing the flow of coating material to the dispenser into discrete slugs of coating material substantially to interrupt the electrical path through the coating material from the material to the coating material supply.
Claim 11
Dependent Claim
67 words
The system of claim 8 wherein the peristaltic voltage block comprises an inlet end for coupling to the source of coating material, an outlet end for coupling to the dispenser, and a housing having an interior wall against which the resilient conduit lies, the contacting means compressing the resilient conduit against the interior wall of the housing substantially to separate the coating material carried thereby into slugs.
Claim 12
Dependent Claim
34 words
The system of claim 9 wherein the interior wall is generally right circular cylindrical in configuration and the multiple coils of resilient conduit are formed into somewhat of a helix around the interior wall.
Claim 13
Dependent Claim
16 words
The system of claim 10 wherein the resilient conduit is generally flat when it is empty.
Claim 14
Dependent Claim
32 words
The system of claim 9 wherein the interior wall is generally frustoconical in configuration and the multiple coils of resilient conduit are formed somewhat into a spiral wrapped around the interior wall.
Claim 15
Dependent Claim
67 words
The system of claim 8 wherein the peristaltic voltage block comprises an inlet end for coupling to the source of coating material, an outlet end for coupling to the dispenser, and a mandrel having an exterior wall against which the resilient conduit lies, the contacting means compressing the resilient conduit against the exterior wall of the mandrel substantially to separate the coating material carried thereby into slugs.
Claim 16
Dependent Claim
34 words
The system of claim 13 wherein the exterior wall is generally right circular cylindrical in configuration and the multiple coils of resilient conduit are formed into somewhat of a helix around the exterior wall.
References Cited (Backward Citations)
US1655262A
Cited
DE891191C
Cited
US2414355A
Cited
US2547440A
Cited
US2673232A
Cited
DE973454C
Cited
GB764494A
Cited
US3122320A
Cited
US3098890A
Cited
US3140666A
Cited
US3138111A
Cited
US3492409A
Cited
US3291889A
Cited
US3582234A
Cited
US3644068A
Cited
US3732042A
Cited
US3899010A
Cited
GB1393333A
Cited
US3866678A
Cited
US3893620A
Cited
GB1478853A
Cited
US4020866A
Cited
US3933285A
Cited
US3934055A
Cited
US4085892A
Cited
US4017029A
Cited
GB2009486A
Cited
US4228930A
Cited
US4159806A
Cited
US4275834A
Cited
US4217062A
Cited
US4231668A
Cited
FR2458693A1
Cited
US4413788A
Cited
US4313475A
Cited
US4313475B1
Cited
US4424011A
Cited
US4530647A
Cited
US4660771A
Cited
US4522571A
Cited
US4639156A
Cited
US4660607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |