US3597914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Watch balance wheel
Assignee: Timex Group USA Inc
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Filing: 1969-09-11
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Granted: 1971-08-10
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Expires: 1989-09-11
Abstract
Abstract An electric-powered watch includes a balance wheel assembly which drives time display means. The balance wheel assembly includes a pivoted balance wheel staff, a central member fixed to the staff, and a balance wheel rim consisting only of a bundle of wires which are adhered together and self-supporting. The wires form a coil which cooperates with one or more magnetic fields to impulse the balance wheel assembly.
Inventors
- 👤 Heinz Meitinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:15
CPC Classifications
G; G04; G04B; G04B17/00; G04B17/04; G04B17/06; G04B17/063; G04C; G04C3/00; G04C3/04; G04C3/06; G04C3/065
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
57 words
A balance wheel assembly for an electric-powered watch, the assembly including a balance wheel staff, a central poising member adapted to poise fixed to the staff, and a balance wheel rim extending completely around and fixed to the central member, said rim consisting of only a bundle of fine windings and means to adhere the windings together.
Claim 2
Dependent Claim
57 words
A balance wheel assembly for an electric-powered watch, the assembly including a balance wheel staff, a central poising member adapted to poise fixed to the staff, and a balance wheel rim extending completely around and fixed to the central member, said rim consisting of only a bundle of fine windings and means to adhere the windings together.
Claim 3
Dependent Claim
34 words
A balance wheel assembly as in claim 1 wherein the central member consists of a stabilization disc and a poising disc and the coil is fixed in a slot formed between the two discs.
Claim 4
Dependent Claim
32 words
A balance wheel assembly as in claim 1 wherein the shape of the coil, viewed from a top plan view, is approximately a sector of a disc, the sector having rounded corners.
Claim 5
Dependent Claim
116 words
An electronic watch comprising a frame plate, a source of electric current, a piezoelectric crystal oscillator connected to said current source, a frequency-dividing circuit connected to said oscillator, a drive circuit coupled to the output of said dividing circuit, a time display means, and a balance wheel assembly means for creating a magnetic field cooperating with and connected with said drive circuit to drive said time display means, said balance wheel assembly further including a balance wheel staff pivoted in the frame plate, a central poising member fixed to the balance wheel staff, and a balance wheel rim extending completely around and fixed to the poising member, said consisting only of a bundle of fine windings.
Claim 6
Dependent Claim
116 words
An electronic watch comprising a frame plate, a source of electric current, a piezoelectric crystal oscillator connected to said current source, a frequency-dividing circuit connected to said oscillator, a drive circuit coupled to the output of said dividing circuit, a time display means, and a balance wheel assembly means for creating a magnetic field cooperating with and connected with said drive circuit to drive said time display means, said balance wheel assembly further including a balance wheel staff pivoted in the frame plate, a central poising member fixed to the balance wheel staff, and a balance wheel rim extending completely around and fixed to the poising member, said consisting only of a bundle of fine windings.
Claim 7
Dependent Claim
24 words
An electronic watch as in claim 4 wherein the means to create a magnetic field consists of two axially poled magnets of opposite polarity.
Claim 8
Dependent Claim
34 words
A balance wheel assembly as in claim 4 wherein the central member consists of a stabilization disc and a poising disc and the coil is fixed in a slot formed between the two discs.
Claim 9
Dependent Claim
58 words
A balance wheel assembly as in claim 4 wherein the shape of the coil, viewed from a top plan view, is approximately a sector of a disc, the sector having rounded corners, the shape being such as to balance the coil about the center staff and to avoid a high inductive EMF at 180* from the zero line.
Claim 10
Dependent Claim
33 words
A balance wheel assembly as in claim 4 shaped in such a manner that except for the wire of the coil no other metallic parts move through the airgap of the driving magnet.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |