IP Library › Granted Patent US 12,422,780
Granted Patent B2
US 12,422,780 · App. 18/345,586 · Granted Sep 23, 2025

Timepiece

Inventor: Hideo Kato (Shiojiri, JP)
Assignee: SEIKO EPSON CORPORATION
G04B45/02G04B19/06G04B45/0076
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Quick Facts
Patent No.
US 12,422,780
App. No.
18/345,586
Granted
Sep 23, 2025
Kind
B2
Abstract

A timepiece includes a movement having a timepiece component, a first hand that has a first length and that is driven by the movement, a second hand that has a second length less than the first length and that is driven by the movement, a support plate provided on the movement, and a dial including a support plate provided on the movement and a sub-dial ring that displays an indicator related to the second hand. The support plate has a support plate ring member that is provided with a support plate opening and a support member that is coupled to the support plate inner circumference of the support plate ring member. The timepiece component is disposed below the support plate opening. The sub-dial ring is disposed on the support member. A cut-out portion is provided at an overlapping position that is above the timepiece component and that overlaps the timepiece component.

Claims (29)

1. A timepiece comprising:

a movement having a timepiece component,

a first hand that has a first length and that is driven by the movement,

a second hand that has a second length less than the first length and that is driven by the movement, and

a dial including a support plate provided on the movement and a sub-dial ring that displays an indicator related to the second hand, wherein

the support plate has a support plate ring member that is provided with a support plate opening and a support member that is coupled to the support plate inner circumference of the support plate ring member;

the timepiece component is disposed below the support plate opening;

the sub-dial ring is disposed on the support member; and

a cut-out portion is provided at an overlapping position that is above the timepiece component and that overlaps the timepiece component.

2. The timepiece according to claim 1 , wherein

the support plate has a second support member, and

the sub-dial ring is supported by the support member and the second support member.

3. The timepiece according to claim 1 , wherein

the second hand is a seconds hand, and

the sub-dial ring is a seconds dial ring that displays a seconds indicator as the indicator.

4. The timepiece according to claim 3 , wherein

the timepiece component is an escape wheel and pinion including a silicon oxide layer.

5. The timepiece according to claim 4 , wherein

the movement has a balance with hairspring disposed below the support plate opening, and a seconds hand shaft supporting the seconds hand;

the seconds dial ring is disposed at a 6 o'clock position;

the balance with hairspring is disposed at a 9 o'clock position; and

the escape wheel and pinion is disposed between the seconds hand shaft and the balance with hairspring in plan view that is viewed from above.

6. The timepiece according to claim 1 , wherein

the first hand is disposed above the support plate; and

the first hand has a window in an area overlapping the timepiece component.

7. The timepiece according to claim 1 , wherein

the dial has a decorative plate between the support plate and the movement,

the decorative plate has a decorative plate ring member provided with a decorative plate opening, and a plate member coupled to a decorative plate inner circumference of the decorative plate ring member, and

the plate member is disposed at a position different from the overlapping position.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 30, 2023
From: KATO, HIDEO
To: SEIKO EPSON CORPORATION
Reel/Frame 064130/0830 →
Priority Claims (1)
JP 2022-106882 · Jul 1, 2022 · national
Continuity (1)
Related Publication 20240004348A1 · Jan 4, 2024
References Cited (7)
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