Timepiece

Patent metadata

Field	Value
Publication number	US-12422780-B2
Application number	US-202318345586-A
Country	US
Kind code	B2
Filing date	Jun 30, 2023
Priority date	Jul 1, 2022
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

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.

First claim

What is claimed is:

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.

Assignees

• Seiko Epson Corp

Inventors

• Kato Hideo

Classifications

• G04B45/0076

  Decoration of the case and of parts thereof, e.g. as a method of manufacture thereof (specially shaped G04B45/0061, G04B45/0069; decoration with inscriptions and pictures G04B45/0084; construction of the hands G04B19/042; decoration by adding extra pieces to the clockwork G04B47/04; colouring by treatment of the surface, e.g. by oxidation C25D) · CPC title

• G04B19/06

  Dials ({moving discs G04B19/20; illuminated dials or hands G04B19/30;} for time-pieces without clockwork G04B49/04 {; machines and arrangements for the manufacture of dials or hands G04D3/0048}) · CPC title

• G04B15/14

  Component parts or constructional details, e.g. construction of the lever or the escape wheel {(assembly and manufacture of the spring G04B1/145; assembly and manufacture of components, e.g. pinions, spindles G04B13/02; lubrication of clockwork bearings G04B31/008; oils for clockwork bearings in general G04B31/08)} · CPC title

• G04B19/10

  Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial {(cases for special purposes, e.g. ring or button watches G04B37/12; indicating means with special effects G04B45/00)} · CPC title

• G04B19/065

  with several parts · CPC title