Piston assembly structure for an hydraulic cylinder
US5303637A · kind A · utility
1Cited by
3References
3Claims
0Family size
Inventor
Key dates
| Filing date | Dec 3, 1990 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Dec 3, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S414/134
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Portable lift structure for moving a support platform between a comparatively dry position above the surrounding deck of a liquid spa tank to a wetting position in the spa tank including two longitudinally extending structural members pivotally connected at corresponding top ends thereof to be moved between a portable and operating positions, one structural member serving as a mast to be removably mounted in the spa tank deck and the other as a platform mount, to be pivoted from above the surrounding spa tank deck to a position above the spa tank and lowered by a hydraulic cylinder and piston to a wetting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.