Patent EP0488552B1 successfully refreshed from Google Patents.
EP0488552B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Beds
Assignee: Huntleigh Technology Ltd
•
Filing: 1991-11-13
•
Granted: 1994-08-10
•
Expires: 2011-11-13
Abstract
Abstract A tiltable bed, Figure 2, has the tilt adjusted by two actuators 60, 62, which can also be used to raise and lower the mattress frame 40. A level sensor 80 is connected to the actuators so that if the tilt varies from the adjusted and desired position, the electric current to one or other actuator is adjusted to restore the desired position. <IMAGE>
Inventors
- 👤 Stephen Hayes
- 👤 Robert Hugh Jones
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 17:04
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/002; A61G7/015; A47; A47C; A47C20/00; A47C20/04; A47C20/041; A61G7/005; A61G2203/00; A61G2203/10; A61G2203/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
75 words
A bed comprising a frame or platform (40) and means (44,48,54,62,42,46,56,60) for varying the height of the platform by the provision of separate power operated actuators, one (62) for the head end and one (60) for the foot end of the bed, characterised in that a level sensor (80) is connected to both actuators and arranged to maintain the angle of the platform relative to the sensor by adjusting power supply to the respective actuators.
Claim 2
Dependent Claim
17 words
A bed as claimed in Claim 1 wherein the actuators (60,62) are low voltage reversible electric motors.
Claim 3
Dependent Claim
16 words
A bed as claimed in Claim 2 wherein power adjustment is by way of voltage variation.
Claim 4
Dependent Claim
27 words
A bed as claimed in any preceding claim wherein the actuators are arranged to be driven in opposite directions in order to adjust the angle of tilt.
Claim 5
Dependent Claim
21 words
A bed as claimed in any preceding claim wherein the level sensor is settable to enable the level to be adjusted.
Claim 6
Dependent Claim
35 words
A bed as claimed in any preceding claim wherein the level sensor comprises a pendulum mounted on the tiltable part (40) of the bed and sensors which move during angular adjustment relative to the pendulum.
Claim 7
Dependent Claim
70 words
A bed as claimed in any preceding claim wherein at least one actuator (60,62) is provided with a rod (54,56) which extends relative to the actuator and is displaced during adjustment of position of the bed by that actuator, and said displacement of the rod is used to provide a control signal and compared with the memory for causing continuation or termination of the adjustment as the case may be.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.