US5003430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controller with snap-on relay module
Assignee: Watlow Winona Inc
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Filing: 1988-09-16
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Granted: 1991-03-26
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Expires: 2008-09-16
Abstract
Abstract Electronic temperature controller including a snap-on relay module which snaps into the electronic temperature controller. Any compatible relay module with any different numbers of poles can be accepted by manually disengaging a relay module from clips on the electronic temperature controller. Ball-stud assemblies on the relay module frictionally engage into a plurality of receptacles in the electronic temperature controller. A geometrical configuration provides for knob to potentiometer orientation and alignment including radial and axial stress relief for the potentiometer.
Inventors
- 👤 Ted VonArx
- 👤 Gerald J. Klaves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:28
CPC Classifications
H; H05; H05K; H05K5/00; H05K5/0017; Y; Y10; Y10S; Y10S439/00; Y10S439/928
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
150 words
Temperature controller with snap-on mercury displacement relay module comprising: a. an electronic temperature controller including a housing, a front side, back side and surrounding sides, a circuit board positioned within said housing, a plurality of upper and lower beveled tabs extending from a rear side of said housing, a plurality of holes in a lower portion of said rear of said housing, and a plurality of spring clips positioned on said circuit board in said housing and positioned behind each of said holes; and, b. a relay coil assembly including a housing supporting at least one relay, a plurality of ball-stud assemblies extending out from a lower portion of said housing, an upper groove of said coil assembly housing accepting said upper tabs of said controller housing, and a mounting block for said ball-stud assembly, on said coil assembly housing frictionally engaging with said lower tab of said electronic controller.
Claim 2
Dependent Claim
150 words
Temperature controller with snap-on mercury displacement relay module comprising: a. an electronic temperature controller including a housing, a front side, back side and surrounding sides, a circuit board positioned within said housing, a plurality of upper and lower beveled tabs extending from a rear side of said housing, a plurality of holes in a lower portion of said rear of said housing, and a plurality of spring clips positioned on said circuit board in said housing and positioned behind each of said holes; and, b. a relay coil assembly including a housing supporting at least one relay, a plurality of ball-stud assemblies extending out from a lower portion of said housing, an upper groove of said coil assembly housing accepting said upper tabs of said controller housing, and a mounting block for said ball-stud assembly, on said coil assembly housing frictionally engaging with said lower tab of said electronic controller.
Claim 3
Dependent Claim
20 words
Controller of claim 1 including a potentiometer on said circuit board, a configured collar, an insert, and a potentiometer knob.
Claim 4
Dependent Claim
35 words
Controller of claim 2 wherein said housing includes a hole in said front cover of said controller housing, an opposing flat member, a top slot in said hole, and an arcuate groove surrounding said hole.
Claim 5
Dependent Claim
16 words
Controller of claim 2 wherein said potentiometer knob includes a flat portion for accepting said insert.
Claim 6
Dependent Claim
11 words
Controller of claim 2 wherein said configured collar includes a tab.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-25 | 1994-09-24 | 1995-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-25 | 1998-09-24 | 1999-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-25 | 2002-09-24 | 2003-03-26 | $7700.00 | Window Closed / Lapsed |