Multifunction timepiece having fan shape moving hand train...

Details Multifunction timepiece having fan shape moving hand train... Multifunction timepiece having fan shape moving hand train...

2007-09-11

2007-09-11

Paumen, Gary F. (Department: 2833)

Horology: time measuring systems or devices

With calendar indicator

C368S223000

Reexamination Certificate

active

11297586

ABSTRACT:
To realize a small-sized analog multifunction timepiece by adopting a fan shape moving hand mechanism which does not use a hairspring. A multifunction timepiece of the invention is provided with a day display mechanism for operating a small hand moving in a fan shape. The day display mechanism is provided with a day indicator driving wheel, a day jumper, a small day wheel for displaying calendar information, a hammer constituted to rotate based on rotation of a day indicator transmission wheel, and a day return spring for exerting a rotational force to the small day wheel. By bringing a cam contact portion of the hammer to a transmission cam outer periphery portion and exerting an elastic force to a return cam outer shape portion by a return spring portion of the day return spring, the small day wheel is constituted to be exerted with a rotational force in a constant direction.

REFERENCES:
patent: 1116836 (1914-11-01), Nivois
patent: 4338680 (1982-07-01), Nomura
patent: 4389122 (1983-06-01), Dubois et al.
patent: 4623261 (1986-11-01), Muto
patent: 4922474 (1990-05-01), Michiel
patent: 5379272 (1995-01-01), Parmigiani
patent: 5793708 (1998-08-01), Schmidt et al.
patent: 6567345 (2003-05-01), Furukawa et al.
patent: 7167416 (2007-01-01), Krishnamani
patent: 7170826 (2007-01-01), Furukawa et al.
patent: 2004/0264304 (2004-12-01), Furukawa et al.
patent: 2005/0259520 (2005-11-01), Forsey et al.
patent: 2006/0215498 (2006-09-01), Meier
patent: 666597 (1988-08-01), None
patent: 0290982 (1988-11-01), None

Affiliated with

Also associated with

Rating

Multifunction timepiece having fan shape moving hand train... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multifunction timepiece having fan shape moving hand train..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multifunction timepiece having fan shape moving hand train... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3793346