Patent US4032805A successfully refreshed from Google Patents.
US4032805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical pulse generator for remote reading meter
Assignee: GAMON CALMET IND Inc
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Filing: 1975-09-18
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Granted: 1977-06-28
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Expires: 1995-09-18
Abstract
Abstract Electrical pulse generator to operate a remote water meter indicator in which the pulse generator is driven by the drive of the meter to cause a magnetic circuit to be opened and closed in accordance with the rotation of the meter drive. The magnetic circuit is opened and closed in a manner whereby a linear force element, i.e., a spring, is acting against a magnetic gap so that the spring is sufficient to overcome the magnetic force and open the gap to cause a large change in the reluctance of the magnetic circuit, generating a pulse in a coil which can be then used to drive a remote reading meter.
Inventors
- 👤 John R. Hereford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:35
CPC Classifications
H; H02; H02K; H02K39/00; G; G01; G01F; G01F15/00; G01F15/06; G01F15/061; G01F15/063
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A remote generating unit comprising a magnetizable core, a coil wound around said core and having output terminals, a pivot plate, rotating mechanical drive means, a spring member mounted only on said pivot plate, said pivot plate being movable between a first position in which said pivot plate closes a magnetic circuit including said magnetizable core, and a second position in which said pivot plate opens said magnetic circuit, said rotating mechanical drive means applying a force directly to said spring member to cause said pivot plate to move from said first position to said second position upon rotation of said mechanical drive means.
Claim 2
Dependent Claim
104 words
A remote generating unit comprising a magnetizable core, a coil wound around said core and having output terminals, a pivot plate, rotating mechanical drive means, a spring member mounted only on said pivot plate, said pivot plate being movable between a first position in which said pivot plate closes a magnetic circuit including said magnetizable core, and a second position in which said pivot plate opens said magnetic circuit, said rotating mechanical drive means applying a force directly to said spring member to cause said pivot plate to move from said first position to said second position upon rotation of said mechanical drive means.
Claim 3
Dependent Claim
28 words
The remote generating unit of claim 1 wherein said pivot plate is returnable to said first position by release of the force from said rotating mechanical drive means.
Claim 4
Dependent Claim
52 words
The remote generating unit of claim 1, including a remote reading unit, said remote reading unit being connected to said output terminals through a unidirectional current conducting means whereby only pulses generated by moving said pivot plate from said first position to said second position are transmitted to said remote reading unit.
Claim 5
Dependent Claim
22 words
The remote generating unit of claim 1 including at least one permanent magnet, said permanent magnet being secured to said pivot plate.
Claim 6
Dependent Claim
50 words
The remote generating unit of claim 4 wherein said pivot plate has secured a permanent magnet sandwiched between two magnetic plates, one pole of said permanent magnet being associated with one of said magnetic plates and the other pole of said permanent magnet being associated with the other magnetic plate.
Claim 7
Dependent Claim
15 words
The remote generating unit of claim 5 wherein said permanent magnet is a ceramic magnet.
Claim 8
Dependent Claim
66 words
The remote generating unit of claim 2 wherein said pivot plate has secured thereto at least one ceramic magnet, said magnetic core being positioned close enough to said pivot plate so that when said pivot plate is moved to said second position, and thence released, it will return to said first position by reason of the magnetic force between said pivot plate and said magnetizable core.
Claim 9
Dependent Claim
58 words
The remote generating unit of claim 7 wherein said pivot plate is mounted on a non-magnetic horizontal surface, one edge of said pivot plate resting in a slot on the top surface of said horizontal surface so as to be movable between said first and second positions, said pivot plate being ordinarily positioned in a substantially vertical position.
Claim 10
Dependent Claim
59 words
The remote generating unit of claim 8 wherein said rotating mechanical drive means is a continuous drive including an eccentric gear and a pin positioned in a slot to linearly move said pivot plate from said first position to said second position and to release said pivot plate when said pin returns to its initial position within its slot.
Claim 11
Dependent Claim
39 words
The remote generating unit of claim 2 wherein said spring member is a linear spring extending across the top edge of said pivot plate, said rotating mechanical drive means applying a force to said spring at the center thereof.
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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |