Patent US5042571A successfully refreshed from Google Patents.
US5042571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable perimeter heater
Assignee: Sierra Research and Technology Inc
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Filing: 1988-08-02
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Granted: 1991-08-27
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Expires: 2008-08-02
Abstract
Abstract A variable parameter heater for applying heat in a predetermined profile to a work surface. The heater has a plurality of elongated members which are interconnected to form a frame. Elongated members are slidingly adjustable to provide the intended heat profile. Each elongated member contains first and second rows of apertures. Heated air is delivered to the work surface past selectively energized heating elements disposed in the first row of apertures. Cool air where required is delivered to the work surface through the second row of apertures. The heater may include a vacuum probe for depositing or removing components relative to the work surface. The vacuum probe may also direct cool air to the work surface. Mirrors may be mounted upon elongated members to provide enhanced viewing of the work surface. In case of disablement, elongated members are individually removeble for repair or replacement.
Inventors
- 👤 William F. Drislane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:56
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3494; B; B23; B23K; B23K1/00; B23K1/012; B23K3/00; B23K3/04; B23K3/047; H05K13/00; H05K13/04; H05K13/046; H05K13/0465; H05K2203/00; H05K2203/08; H05K2203/087
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
95 words
A variable size perimeter heater for applying a pre-determined heat profile to a work surface comprising: a plurality of elongated members slidably adjustably mounted with respect to adjacent elongated members to define an intended perimeter of variable size; each of the members including: a first plurality of recesses disposed in said member and terminating in a linear array of apertures in a face of said member; a corresponding plurality of heating elements disposed in said first plurality of recesses; and electrical interconnection means for connecting said plurality of heating elements to an electrical control source.
Claim 2
Dependent Claim
95 words
A variable size perimeter heater for applying a pre-determined heat profile to a work surface comprising: a plurality of elongated members slidably adjustably mounted with respect to adjacent elongated members to define an intended perimeter of variable size; each of the members including: a first plurality of recesses disposed in said member and terminating in a linear array of apertures in a face of said member; a corresponding plurality of heating elements disposed in said first plurality of recesses; and electrical interconnection means for connecting said plurality of heating elements to an electrical control source.
Claim 3
Dependent Claim
33 words
The variable perimeter heater of claim 1 further comprising means for directing gas through said first plurality of recesses past said plurality of heating elements and through the apertures to the work surface.
Claim 4
Dependent Claim
49 words
The variable perimeter heater of claim 2 further comprising: a second plurality of recesses disposed in said member and terminating in a linear array of apertures in said face of said member; and means for directing gas through said second plurality of recesses and apertures to the work surface.
Claim 5
Dependent Claim
24 words
The variable perimeter heater of claim 3 wherein said second plurality of apertures is substantially parallel and exterior to said first plurality of apertures.
Claim 6
Dependent Claim
17 words
The variable perimeter heater of claim 4 including means to selectively energize said plurality of heating elements.
Claim 7
Dependent Claim
26 words
The variable perimeter heater of claim 5 further including selective energizing means operative to provide a selected magnitude of power to said plurality of heating elements.
Claim 8
Dependent Claim
23 words
The variable perimeter heater of claim 6 further comprising means for placing a work-piece on, and removing a work-piece from the work surface.
Claim 9
Dependent Claim
15 words
The variable perimeter heater of claim 7 further comprising means for viewing the work surface.
Claim 10
Dependent Claim
16 words
The variable perimeter heater of claim 8 wherein said viewing means comprises at least one mirror.
Claim 11
Dependent Claim
16 words
The variable perimeter heater of claim 9 wherein said viewing means further comprises a video camera.
Claim 12
Dependent Claim
15 words
A variable perimeter heater of claim 9 wherein said viewing means further comprises a microscope.
Claim 13
Dependent Claim
24 words
The variable perimeter heater of claim 9 wherein a one of a plurality of mirrors includes an orifice to receive said work-piece placing means.
Claim 14
Dependent Claim
23 words
The variable perimeter heater of claim 7 further comprising means connected to said work-piece placing means for directing air to the work surface.
Claim 15
Dependent Claim
161 words
A variable perimeter heater for applying a pre-determined heat profile to a work surface comprising: a plurality of elongated members slidably adjustably mounted with respect to adjacent elongated members to define an intended perimeter of variable size; a first plurality of recesses having apertures arrayed in the work surface opposing face of said plurality of elongated members; a corresponding plurality of heating elements disposed in said first plurality of recesses; means to electrically interconnect each of said plurality of heating elements to an electrical control source; means to selectively energize said plurality of heating elements to provide an intended magnitude of heat; means to direct gas past said plurality of heating elements to the work surface; a second plurality of recesses substantially linearly arrayed in the work surface opposing face of said plurality of elongated members substantially parallel and exterior to said first plurality of recesses; and means to direct gas through said second plurality of recesses to the work surface.
Claim 16
Dependent Claim
161 words
A variable perimeter heater for applying a pre-determined heat profile to a work surface comprising: a plurality of elongated members slidably adjustably mounted with respect to adjacent elongated members to define an intended perimeter of variable size; a first plurality of recesses having apertures arrayed in the work surface opposing face of said plurality of elongated members; a corresponding plurality of heating elements disposed in said first plurality of recesses; means to electrically interconnect each of said plurality of heating elements to an electrical control source; means to selectively energize said plurality of heating elements to provide an intended magnitude of heat; means to direct gas past said plurality of heating elements to the work surface; a second plurality of recesses substantially linearly arrayed in the work surface opposing face of said plurality of elongated members substantially parallel and exterior to said first plurality of recesses; and means to direct gas through said second plurality of recesses to the work surface.
Claim 17
Dependent Claim
23 words
The variable perimeter heater of claim 14 further comprising means for placing a work-piece on, and removing a work-piece from, the work surface.
Claim 18
Dependent Claim
16 words
The variable perimeter heater of claim 15 further comprising viewing means to observe the work surface.
Claim 19
Dependent Claim
16 words
The variable perimeter heater of claim 16 wherein said viewing means comprises at least one mirror.
Claim 20
Dependent Claim
23 words
The variable perimeter heater of claim 16 further comprising means connected to said work-piece placing means to direct air to the work surface.
Claim 21
Dependent Claim
23 words
The variable perimeter heater of claim 17 wherein said at least one mirror further includes an orifice to receive said work-piece placing means.
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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) | 1994-08-26 | 1995-02-25 | 1995-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-26 | 1999-02-25 | 1999-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-26 | 2003-02-25 | 2003-08-27 | $7700.00 | Window Closed / Lapsed |