Watch with double thread coupling device

Details Watch with double thread coupling device Watch with double thread coupling device

1994-11-17

1997-01-28

Roskoski, Bernard

Horology: time measuring systems or devices

Cases

With protection means

368308, 368309, 368306, G04B 3700

Patent

active

055983839

ABSTRACT:
A watch with improved water-proof and pressure-resistance characteristics is disclosed. It comprises: (a) a casing, a bottom cover affixed to the casing, a screw winding crown, and a receiving port on the casing for receiving the screw winding crown; (b) a first double-thread coupling arrangement provided between the screw winding crown and the receiving port; and (c) a second double-thread coupling arrangement provided between the casing and the bottom cover. The first double-thread coupling arrangement comprises an externally and internally threaded annular section provided on the screw winding crown, a matching externally and internally threaded annular recess provided in the receiving port, and a first packing ring provided between the receiving port and the screw winding crown. The second double-thread coupling arrangement comprises an externally and internally threaded annular protrusion provided on the casing, a matching externally and internally threaded annular groove provided in the bottom cover, and a second packing ring provided between the casing and the bottom cover.

REFERENCES:
patent: 666569 (1901-01-01), Sporleder
patent: 691412 (1902-01-01), Sporleder
patent: 1853388 (1932-04-01), Wadsworth
patent: 2327112 (1943-08-01), Kramer et al.
patent: 2617249 (1952-11-01), Devay

Affiliated with

Also associated with

Rating

Watch with double thread coupling device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Watch with double thread coupling device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Watch with double thread coupling device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-945679