Demountable stick
US3963037A · kind A · utility
38Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1974 |
| Grant date | Jun 15, 1976 |
| Priority date | — |
| Expiry date | Aug 21, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32516
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A lecturer's pointer, or a blind man's stick, is demountable into sections for easy stowing, but the sections cannot be separated since they are permanently connected by an axial cord. Pulling the cord without further guidance, causes the sections to join at spigot and socket joints, designed to minimize shake without binding. The cord is inherently elastic or is sprung and is put in tension to hold the joints rigid by a device on the head of the stick.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.