Visual panel
US5398436A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Apr 8, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F13/0481
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
One visual panel 1 is allotted to each of two lanes 3 in such a manner as to cover and conceal from a competitor a lifting device portion of an apparatus for automatically aligning and arranging bowling pins 4 at a distal end of the lane 3 in a bowling alley 2. The visual panels 1 are disposed in a series by being supported by columns 5 rotatably in the direction of A. Each visual panel 1 comprises a frame 6; a flexible sheet 11 having swollen portions 9 and 10 at opposite edge portions 7 and 8; sheet stretching device 12 for slidably accommodating the swollen portions 9 and 10 at the opposite edge portions 7 and 8; and tension adjusting device 13 for adjusting the tension applied to the sheet 11.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.