Bed arrangement
US3972081A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1973 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Aug 20, 1993 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G7/018
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bed having a torque compensated parallelogram lifting arm arrangement. The bed has a subframe vertically adjustable by the parallelogram lifting arm arrangement and thereby retains a level relationship at all height adjustment levels. An articulated mattress support surface is provided, which is formed by articulated pivotally interconnected head or back, seat, thigh and leg sections mounted on the level vertically adjustable subframe. The seat section is double-pivoted, and enables simple and effective Trendelenburg and Reverse Trendelenburg positioning independent of any position of the height-adjustable supporting subframe. The seat, thigh, and head sections are articulated by cam and cam follower drive arrangements. Selective pivot defeat means are provided to enable selective pivotal lowering of the thigh and head or back sections without pivoting the seat section, and independent of the supporting subframe position, enabling simple and effective hyperextension positioning. The back and thigh sections may be pivoted up and down to at and above horizontal by patient control; other movements and positioning are nurse-controlled by a foot end mounted nurse control panel. A cant…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.