GB2457702A - A high security, sliding table top, with protecting headboard, therapeutic bed unit - Google Patents

Abstract

A table top 11, carries bedding 14, heated by ultraviolet 22 and infrared 23 lamps which use recirculated and fresh air 29, and boosted by fans 38. The table top moves on rollers 59,58,57,9 in metal tracks to 11, to allow the bed 5 ease of access. Above the lamps are 4 thermostats 24,25,26,27. Thermostat 24 provides air flow for all night temperature control. Thermostat 25 is set to a higher temperature for supplying a boosted temperature for a rapid warm up period, which then releases control back to thermostat 24. In hot weather thermostat 26 controls the air conditioning chiller unit 46 and fans 38. Thermostat 27 is a tamperproof thermostat, that removes all electricity if faulty components expose the users to health or fire risks.

Description

A high secudty, shding table top, with protecting headboard, therapeutic bed unit This invention relates to a device for providing a highly practical bed unit with multiple universal benefits for both young and old, for the able bodied, the handicapped, the elderly, the poor, also with many benefits for the sick.

This high security, sliding table top, with protecting headboard, therapeutic bed unit has many advanced feabJres with advantages that have been developed, tiled and tested, over the largely unchanged celd, damp, restrictive normal bed.

-.-... .--j -s. 5.-5 -I -LI-A -_jSS The Invention will now be described solely by way of example and with reference to the accompanying drawings in which: Figure 1 shows a simplified perspective overview of the bed unit when the table top Is in the refracted position, Figure 2 shows a simplified perspective overview of the bed unit when the table top Is In the extended position.

Figure 3 shows a front view the headboard of the bed unit looking from the foot board end, Agure4 showsasldesectionviewoftheheadboardofthebedunit, FIgure 5 shows a plan view of the headboard of the bed unit, Figure 6 shows a perspective view of the foot board of the bed unit that holds the heating and control assembly, and fresh air bleed grilles, Figure 7 shows a front section view of the foot board of the bed unit that holds the heating and control assembly, and fresh air bleed grilles, Figure 8 shows an exploded perspective view of the side panels of the foot board of the bed unit, Figure 9 shows a perspective view of the air conditioning and light control grilles in the foot board of the bed unit, Figure 10 shows a front section view of the air conditioning and light control grilles in the foot board of the bed unit, also the front section view of the table top components, Figure 11 shows a perspective view of the table top and supporting slide runners of the bed unit, Figure 12 shows a side section view of the table top components and internal foot board components of the bed unit, Figure 13 shows a schematic circuit diagram for the control box, lamp control, and air conditioning, and safety cutout cIrcuits of the foot board end of the bed unit, Figure 14 shows a schematic circuit diagram for the headboard lighting unit of the bed unit, Figure 15 shows the control box for the bed unit's air conditioning and safety power cutoff controls, Infigure 1, isapeispectiveoveMewofthebedunitwherethemetalshucture I isfomiedfromextrudedsteel retangular In cross section and braced by 4 cross struts square in cross section and welded as requked. The headboard Is held upright by side rails 2 and 3 bolted at the headboard and foot board as 4. The foot board is extruded steel square in cross section and is formed and welded to make the shape 5 and both sides having threaded end plates 6 and 7 to fasten the rectangular steel roller support member 8. One of the 4 rollers 9 is shown to indicate how the table top's extended movement is checked by 2 metal studs, one stud 12 is shown. The table top's retracted movement Is stopped by a central single bar 13. The bed's canopy 14 Is formed from a normal bed sheet and bedclothes draped over the table top on 3 sides and Is provided by the purchaser.

It should be noted that the greater part of the bed unit has an exact left right mirror image symmetry either side of a line from the middle point of the headboard to the middle point of the foot board, and components will be identical both In position and form. Mac it should be noted that for clarIty, only the item on one side may be shown.

In figure 2, Isa perspective overview of the bed unit where the metal structure I supports the headboard, and has three protecting fabric covered semi circular dense plastic foam pieces bonded to steel uprights 99,100,101. The headboard Is fitted with a fluorescent tubular reading lIght 96 operated by pull switch 95, and an ultraviolet tubular lamp 98, operated by pull switch 97.

The table top shows a lower light weight marine plywood underside 10, and a lightweight marine plywood top 11.

The table top is shown in the extended position showing 1 of the 2 studs 12 contacting I of the 2 end rollers 9.

The bedclothes 14 will be seen to have moved with the table top, and hang down to form an effective air seal to mattress.

In figure 3, is a front view of the headboard unit where the metal structure 1 supports the headboard, and shows the foampleoes99, 100,101. Theposltionofalightsoftdensltyfoammattress ll4isshownsupportlngtwofabriccOvered plywood panels 108 and 109 that are made such as to have the covering fabric extend 110 and 111 that act as grab' handles to turn or adjust the slope of these two reversible backrest panels. The lighting unit Is supported on two steel support brackets 102 and 118. Both brackets are screwed to load spreading wooden struts 116 and 117, which cariy three sag preventing square timber pieces 104,105,106, which are bonded to a rectangular sheet of ptywood making the roof 103 which Is fabric covered to the top side. Two puir cord light swItches 95 and 97 are screwed on timber pIece 117.

in figure 4, is a side view of the headboard unit and shows the position of the fluorescent tubular reading light 96 and ultraviolet tubular lamp 98. The person 115 is shown to illustrate the use of backrest's 108 and 109.

In figure 5, Is a plan view of the headboard unit and shows the position of the fluorescent tubular reading lIght 96 and ultraviolet tubular lamp 98. The position of light switches 95 and 97 is also shown.

In figure 6, is a perspective view of the outside wall of the foot board, a sheet of marine plywood 19 is screwed to metal support frame 5 and supports grilles 29 and 30, and a door 20 hInged as 21. The door holds sbc electric lamps, these lamps may be energy saving fluorescent, or incadescent. Two of the six lamps are numbered and are deep red as 23 and ultraviolet as 22. The door also holds four identical thermostats, thermostat 24 is termed normal' and controls the all night' sleeping temperature. Thermostat 25 is termed boost' and controls the lamps to a higher temperature then hands back control to the normal' thermostat when the boost temperature is reached. Thermostat 26 is termed cooling' and controls the air conditioning. Thermostat 27 Is termed security' and Is set to a temperature above the boost' temperature and will removed all power from the unit In the event of the normal' or boost' thermostats malfunctioning and also acts as fire control when any other unit In the air flow system over heats. The electric power to and from the door is shown by cable 28 which enters the relay box 31.

In figure 7, is a front view, and viewed as in figure 6. The end stop 13 prevents the table top from leaving the support idlers when the table top Is in the retracted position. The bed's canopy 14 is shown in cross section. The two air bleed grilles 29 and 30 allow room air to mix with the condilioned air, and are infinitely adjustable from fully open to fully dosed.

In figure 8, is an exploded perspective view showing the two foot board side covers 15 and 18, that are formed from sheet metal and fixed to the metal structure with screws 16 received by threaded holes 17.

In figure 9, is a perspective view to the front and inside of the foot board, a sheet of marine plywood 34 supports two grilles 47 and 48 whIch operate exactly the same as the figure 7 air bleed grilles 29 and 30, but are used to control the amount of light as well as the amount of air entering the bed canopy. It will be dear that if both grilles are dosed the air would still flow over the top of the board 34 and into the bed. The air flow is effected by sucking the air from both sides of the canopy through wall vents 35 and 40 then through flexible hose 36 and 41 to wad vents 37 and 42, then into fan box 32 where two low noise maIns axial fans 38 and 43 blow the extracted air out vIa wall vents 39 and 44 taking a proportion of the bieeded fresh air (figure 7. 29 and 30) and pass thereby around the six heating lamps which not only heat the air but also output therapeutic light radiation to the occupants of the bed.

Th heated air then passes over the four thermostats which act together to maintain a high level of air quality and safety. The air flow and control circuits are designed to operate safely if one or both fans cease to operate, due to the action of convected air currents. The fan box 32 is soundproofed, and bolted 33 to the side frames at both ends.

The wall vent 45 and flexible hose 46 supplies blown chilled' air from a suitable commercial unit to the fan box 32 and Is controlled by the coolIng' thermostat and will be detailed in the electrical circuit.

In figure 10, Is a front view of figure 9 and shows retracted end stop 13 also a cross section of the table top shows the Iowertabietopboard 10, fixed totabletopboard 11 wIth supportbeams4953and 54and73. Thebeams73and 49 each screwed to a one piece roller track as 60. The whole table top is supported by 4 rollers as 9,57, 58,59 to both sides. The canopy is shown by 14.

In figure 11, us a perepective view of the table top. Roller attachment bar 8 is bofted to the metal frame 5 with bolts 55 and 56. Two rollers 59 and 9 contact the upper side of track 60, and two rollers 58 and 57 contact the lower side of track 60, and is repeated to other side as shown. The table top Is shown extended, and shows the action of the end stop studs as 12. The upper and lower boards 11 and 10 are bonded and screwed to the beams 49. 73, and 53 and 54, and braced by cross beams 50, 51, and 52. A magazine shelf space is shown by the patterned area 67.

Th fN tnn ir inrtitinninn Will nnw lip,ihp* Whan fli th frtn i rtrad wrrn ir frnm th ftvit lvirr1 The lamps as 22 and 23 will turn on and off to maintain a constant all night temperature but can be turned completely off by push button 77 or mains switch 7694. The preferred way to turn off the normal' heating is by button 77 because the fans will remain on. When a body first enters the table top bed, their temperature is VGf often far below a comfortable sleeping temperature, and may well find that the normal' thermostat is turned off. The solution to this problem was to have what the inventors call a boost thermostat, that is a thermostat that will by-pass the normal' thermostat and hand over control to the boost' thermostat. It is the intention of this device that at all times the temperature of the bed be strictly controlled for the health care of even the most frail elderly patient The boost circuit will now be described: When when the red push button 88 is pressed, the boost relay coil 901s energlsed and will move contacts 91 and 92 from normally dosed to normally open, so that contact 91 can supply current to the boost thermostat 25. If the bed temperature is still at boost heat as when boost was last used, the boost thermostat will fail to atch' the boost coil 90, so preventing exposure to an over boost heat. If the boost thermostat Is below boost heat, the relay coil 90 will be latched' on, and the red boost' neon 89 will light, the live current will then pass to Isolating contacts 92 and iHuminate the six lamps as 22 and 23 to neutral 93, and if no malfunctions, through the security' thermostat to 94 N. During the boost' heat cyde it is preferred that the normal' circuit will be on' so that when the boost heat turns off, the normal' thermostat will resume heat control if the occupants are by then asleep.

From the above description, It will noted that the security' thermostat is tamper proof, and will only allow a one off temperature over limits, and that would be worse case not more than +35 degrees C. When the faulty part is replaced the system will operate again, e.g. does not require any resetting.

In figure 14, is a schematic circuit diagram of the headboard hghtlng. A 13A mains plug (not shown) supplies the live neutral and earth as shown. The Live wire goes to bathroom st1e cord light switches 97 and 95. A 4 foot long tubular fluorescent light unit 96 (see figure 496 and 98) is for a reading light, and a 4 foot long tubular ultraviolet lamp 98 is for therapeutic light radiation for the face, shoulders and neck. It should be noted that all the ultraviolet lamps used in this bed are of the low powar types, that are commonly used in discotheques etc., and are safe for constant use.

It should also It noted that the lamps for the foot board should be 75W for ultraviolet lamps, and 60W for the deep red lamps. if dressings etc., need to be checked during the night, one or two white lights may be used in place of one or two ultraviolet lamps.

Infigure 15, isaplanviewofthecontrolbox 112. Thepowercablesarerepresented by 119.Ared neonllght ll3shows when the mains swItch 7696 Is turned on'. The Panic' or turn off' normal and boost heat 77is a push to break switch.

The fan control 78 has a dick to completely off' then when turned clockwise will increase the speed of both fans. It should be noted that the tans in this design are silent at most speeds, and are only heard when fans are set to maximum.

The normal' all night sleeping temperature is selected by green push to make switch 83 and shows when working by lighting green neon 84. The boost heat Is selected by red push to make switch 88 and shows when working by lighting red neon 89.