Patent US4644332A successfully refreshed from Google Patents.
US4644332A
Expired / Lapsed
US
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Dry lube level sensor
Assignee: Essex Solutions USA LLC
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Filing: 1985-10-18
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Granted: 1987-02-17
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Expires: 2005-10-18
Abstract
Abstract A dry lube level sensor for use in a verbal annunciation system for monitoring a wire fabrication process comprises a sealed float tube having a magnetic float for actuating a reed switch within an adapter which connects the float tube to a mounting base for providing a low level signal to the alarm system.
Inventors
- 👤 Randall C. Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:57
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8342
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
158 words
A level sensor (34), comprising: a polypropylene bottle float (40); a magnet (42), attached to said bottle float (40); a vertically disposed PVC float tube (44) for floating said bottle float; a mounting base (54); an adapter (52), having a cavity therein for connecting said float tube (44) to said mounting base (54); a tubing connector (50) for communicating fluid to and from said float tube; a magnetic reed switch (56) sealed within said cavity for closing off said tube's (44) bottom and for actuation by proximity to said floating magnet according to the level in said float tube; a cap (46), having a vent for closing off said tube's (44) top; and a vertically disposed adjustable bracket (60) having an elongated vertical slot and having a horizontal platform attached to said mounting base, said bracket for being mounted on a permanent fixture (62) for providing level adjustability for the level which causes actuation of said reed switch.
Claim 2
Dependent Claim
158 words
A level sensor (34), comprising: a polypropylene bottle float (40); a magnet (42), attached to said bottle float (40); a vertically disposed PVC float tube (44) for floating said bottle float; a mounting base (54); an adapter (52), having a cavity therein for connecting said float tube (44) to said mounting base (54); a tubing connector (50) for communicating fluid to and from said float tube; a magnetic reed switch (56) sealed within said cavity for closing off said tube's (44) bottom and for actuation by proximity to said floating magnet according to the level in said float tube; a cap (46), having a vent for closing off said tube's (44) top; and a vertically disposed adjustable bracket (60) having an elongated vertical slot and having a horizontal platform attached to said mounting base, said bracket for being mounted on a permanent fixture (62) for providing level adjustability for the level which causes actuation of said reed switch.
Claim 3
Dependent Claim
117 words
Apparatus, comprising: a float; a magnet attached to said float; a float tube having a connector for fluid communication with a reservoir, said float tube for having a varying liquid level therein for floating said float and said magnet; a reed switch disposed in said float tube for actuation by proximity to said magnet floating at a level in said float tube corresponding to a selected level in said reservoir; and a vertically disposed adjustable bracket having an elongated vertical slot and having a horizontal platform upon which said float tube is vertically mounted, said bracket for being mounted on a permanent fixture for providing level adjustability for the level which causes actuation of said reed switch.
Claim 4
Dependent Claim
117 words
Apparatus, comprising: a float; a magnet attached to said float; a float tube having a connector for fluid communication with a reservoir, said float tube for having a varying liquid level therein for floating said float and said magnet; a reed switch disposed in said float tube for actuation by proximity to said magnet floating at a level in said float tube corresponding to a selected level in said reservoir; and a vertically disposed adjustable bracket having an elongated vertical slot and having a horizontal platform upon which said float tube is vertically mounted, said bracket for being mounted on a permanent fixture for providing level adjustability for the level which causes actuation of said reed switch.
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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) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |