Title:
SANDGLASS AND ITS USING METHOD
Document Type and Number:
WIPO Patent Application WO/2003/075102
Kind Code:
A1
Abstract:
A sandglass having a rigid structure, and its using method, in which entire sand encapsulated in a container can be moved instantaneously and readily to one sand receiving section to bring about a state capable of measuring the time while facilitating design and manufacture and increasing the degree of freedom in design. The sandglass comprises a first sand receiving section (11), a second sand receiving section (12), a constricted section (6) provided between them and having a hole for passing sand, and a bypass section (2) for coupling the first sand receiving section (11) and the second sand receiving section (12) and having an opening diameter larger than that of the passing hole.
Inventors:
YUKINO EIICHI (JP)
Application Number:
PCT/JP2003/002187
Publication Date:
September 12, 2003
Filing Date:
February 27, 2003
Export Citation:
Assignee:
YUKINO EIICHI (JP)
International Classes:
G04B45/00; G04F1/06; (IPC1-7): G04F1/06
Foreign References:
| JPS4853980U | 1973-07-12 | |||
| JPS541466U | 1979-01-08 | |||
| JPS5084064U | 1975-07-18 |
Attorney, Agent or Firm:
Funatsu, Nobuhiro (Takiyama Bldg. 5F 7-12, Ginza 6-chom, Chuo-ku Tokyo, JP)
Download PDF: