ADJUSTABLE ELEVATING TOILET SEAT

Abstract: A height adjustable toilet seat apparatus (2, 22, 42, 62, 82) includes a seat (3) and a framework (11) fitted about a toilet bowl (7). The framework (11) includes clamping means (4) for releasably securing the apparatus (2, 22, 42, 62, 82) to the toilet (7) and a frame for the seat (3). The framework (11) includes a number of telescoping legs (5, 6) which can be set at one or more heights from a lowered position. The apparatus (2, 22, 42, 62, 82) can be used for a portable toilet pan (36), in addition to a fixed toilet (7). The apparatus (2, 22, 42, 62, 82) can be incorporated into a chair (32) and a wheeled chair (200), which can also include steering, braking, a clutch and motive means.

Description: TITLE: ADJUSTABLE ELEVATING TOILET SEAT TECHNICAL FIELD The present invention relates to a height-adjustable toilet seat for use by the elderly, the disabled or the handicapped as well as the able bodied. The present invention further relates to chairs and wheeled chairs incorporating a height-adjustable toilet seat. BACKGROUND ART Toilet seats are typically formed to a fixed height. Such a height is suitable for the physically able, but is not always suitable for those with limited mobility. Toilet fixtures of an enlarged or elongated bowl are known. However, such higher seats are generally of a less convenient height for mobile persons, or for children m the same household. Toilet seats m which the base is higher than normal, or in some way elevated, are also known. However, these are normally of a fixed height. Thus, they are again inconvenient for able bodied users. Removable inserts for seats are also known. In such instances the insert sits on or over the toilet bowl, generally placed m position by insertion into the bowl itself. This has the disadvantages of, firstly, being in the way of the flushing action of the toilet. Secondly, the arrangement does not allow for easy self cleaning of the insert (as is the case with the toilet bowl when it is flushed). Thirdly, whilst the insert can be easily removed, there is no sanitary place for it to be kept, where it is handy for further use, adjacent the toilet. Toilets with adjustable heights or side rails are known. An example can be seen in US Patent No. 4631759, with the use of side rails and an adjustable grip. US Patent No 5031251 discloses a mechanism connected to the bowl for raising and loweπng the nm portion. However the plumbing either needs to be extended for these arrangements or standard toilet seats are required to be modified. A further disadvantage of some types of arrangements is that they are not easily operated by the disabled or handicapped person wishing to use the toilet A still further disadvantage of the above types of seats or toilets with seats is that the upper, elevated position is not adjustable, from user to user Commodes of vaπous designs are known. These can include a mobile commode incorporated into a wheeled chair. However, commodes require an m-built toilet seat, and cannot be used m conjunction with a normal toilet. It is an object of the present invention to provide an adjustable toilet seat the height of which may be vaπed from the normal height to one of a plurality of elevated positions. It is a further object of the present invention to provide a height adjustable toilet seat which can be incorporated into a wheeled chair. It is a further object of the present invention to address the foregoing problems or at least to provide the public with a useful choice. Further aspects and advantages of the present invention will become apparent from the ensuing description which is given by way of example only. DISCLOSURE OF INVENTION According to one aspect of the present invention there is provided a height adjustable toilet seat apparatus for use with a toilet bowl, said apparatus including: a toilet seat; clamping means for releasably securing said apparatus about the outside of the toilet bowl; raising or lowering means fixed to the said clamping means and means adapted for laterally restraining the said seat; and means for fixing the said raising or lowering means at a predetermined height. According to a further aspect of the present invention there is provided a height adjustable toilet seat apparatus as described above wherem the said raising or lowering means includes a plurality of telescoping legs. According to a further aspect of the present invention there is provided a height adjustable toilet set apparatus as described above wherem the said means for fixing the said raising or lowering means comprises detent means associated with the said legs. According to a further aspect of the present invention there is provided a height adjustable toilet seat apparatus as described above wherein the said raising or lowering means are fluid actuated According to another aspect of the present mvention there is provided a height adjustable toilet seat apparatus as descπbed above, wherein said seat includes hinging means for releasably securing the seat to the apparatus. According to another aspect of the present mvention there is provided a height adjustable toilet seat apparatus as described above, wherem said toilet bowl is selected from: an existing toilet; and a portable toilet pan. If the toilet is a portable pan, it will be appreciated that the frame work can be incorporated into an ordinary chair with some or all of the seat removed. According to another aspect of the present mvention there is provided a height adjustable toilet seat apparatus as descπbed above, wherem said telescoping legs are further mter-connected and operable and the said detent means by a lever to remotely disengage said engaged stops of the legs. Preferably, the number of legs and holders is selected from four or five. Preferably, said hinging means also releasably secures a lid for the seat to the apparatus. Accordmg to another aspect of the present mvention there is provided a height adjustable toilet seat apparatus as descπbed above, said seat further mcludes an msert releasably engageable with said seat wherem the said insert is adapted to conform to the internal shape of the said bowl. Preferably, said msert is of plastics material, fibreglass or metal. Preferably, said apparatus mcludes a framework capable of supporting the said seat and shaped to fit about or around the top of the bowl and made of a material selected from steel, plastics, aluminium alloy, wood, and a combination thereof. With these features present it can be seen that the seat can be adjusted with the operation of one lever, making the adjustment of the height easy for a disabled or handicapped user, or an injured person. At the same time the toilet can be used m a normal manner by adjustment of the seat to its lowered position. Thus no special toilet needs to be installed for a person who is injured, disabled or handicapped Accordmg to another aspect of the present mvention, there is provided a height adjustable toilet seat apparatus as descπbed above, m which said seat further mcludes means to heat said seat. Optionally, the heating means is thermostatically controllable, and is by resistance heating. Optionally the voltage is extra low voltage, between 12 to 24 volts Accordmg to another aspect of the present invention there is provided a height adjustable toilet seat apparatus as described above, wherem said height adjustable toilet seat further includes elements selected from: (a) arm rests; (b) a back rest; (c) a protective skirt arranged about the telescoping legs; and (d) a lever arm for remotely opening and closing a toilet seat cover. Preferably, the arm rests and/or back rests may be hmged to be hmgeable and collapsible when not m use. Optionally also, one or both arm rests may be h ged to e flat, and may mclude one or more rollers therein, for assisting a person moving horizontally onto the arm and onto the apparatus. Preferably, said lever arm is operable by a hand and / or a foot control. The arms and back rests can thus be moved quickly and simply out the way, if an able-bodied person so wishes, when using the facilities. Accordmg to another aspect of the present mvention there is provided a height adjustable toilet seat apparatus as described above, wherem said framework includes means to adjust the width of said seat. This permits the apparatus to cater for differing styles of known toilet systems of diffeπng widths. Accordmg to another aspect of the present mvention there is provided a height adjustable toilet seat apparatus as described above, wherem said seat mcludes adjustable flanged portions for use m adapting the apparatus for differing widths of different styles of toilet systems. According to another aspect of the present invention there is provided a wheeled chair, said chair mcludmg: (a) a height adjustable toilet seat apparatus, as described above; and (b) a plurality of wheels arranged about and under the apparatus Accordmg to another aspect of the present invention there is provided a wheeled chair, said chair further including' (c) steering means to turn at least one set of wheels. According to another aspect of the present invention there is provided a wheeled chair, said chair further including: (d) means operable to apply a brake to one or more wheels Accordmg to another aspect of the present invention there is provided a wheeled chair as descπbed above wherem said chair further includes: (e) a battery and a motor, permitting the wheeled chair to be operated by the user. According to another aspect of the present mvention there is provided a wheeled chair, said chair further including: (f) clutch means permitting the disengagement of the motor whilst said chair is stationary or moving. Preferably the clutch means is of the ratchet type. According to another aspect of the present mvention there is provided a wheeled chair as descπbed above wherein said chair further mcludes one or two footrests. Thus, the height adjustment apparatus can be incorporated mto a chair for use by a disabled or handicapped person. Thus a special commode, or commode chair is not needed m addition to the above chair. It can also be used a wheel chair, in the usual way. BRIEF DESCRIPTION OF DRAWINGS Further aspects of the present mvention will become apparent from the following description which is given by way of example only, and with reference to the accompanying drawings m which: Figure 1 is a side view of a first preferred embodiment of the seat apparatus of the present mvention in an extended position, with a toilet m outline only; Figure 2 is a side view of the first preferred embodiment of the seat apparatus of the present invention in a lowered position; Figure 3 is a front view of the first preferred embodiment of seat apparatus of the present mvention in the same position as m Fig. 1; Figure 4 is a front view of the first prefeπed embodiment of the seat apparatus of the present invention m the same position as Fig. 2; Figure 5 is a back view of the first preferred embodiment of the seat apparatus of the present mvention in the same position as in Fig. 1 ; Figure 6 is a back view of the first prefeπed embodiment of the seat apparatus of the present mvention in the same position as in Fig. 2; Figure 7 is a side view of the insert of the first prefeπed embodiment of the seat apparatus of the present invention; and Figure 8 is a perspective view from above of the msert of the first prefeπed embodiment of the seat apparatus of the present invention; Figure 9 is a plan view of the msert of the first prefeπed embodiment of the seat apparatus of the present mvention, showing a heater; Figure 10 is a side view of a first prefeπed embodiment of the seat apparatus of the present mvention in the extended position, showing heater controls, Figure 11 is a side view of the first prefeπed embodiment of the seat apparatus of the present invention in the lowered position, showing heater controls; Figure 12 is a side view of a second prefeπed embodiment of the seat apparatus of the present invention; Figure 13 is a second side view of the second prefeπed embodiment of the seat apparatus of the present mvention; Figure 14 is a back view of a third prefeπed embodiment of the seat apparatus of the present mvention, m an extended position; Figure 15 is a back view of a third prefeπed embodiment of the seat apparatus of the present invention, in a lowered position, Figure 16 is a back view of a third prefeπed embodiment of the seat apparatus of the present invention, in an extended position; Figure 17 is a back view of a third prefeπed embodiment of the seat apparatus of the present invention, m a lowered position, Figure 18 is a side view of a third prefeπed embodiment of the seat apparatus of the present invention, m an extended position, Figure 19 is a side view of a third prefeπed embodiment of the seat apparatus of the present invention, in a lowered position; Figure 20 is a side view of a fourth prefeπed embodiment of the seat apparatus of the present mvention, m an extended position; Figure 21 is a side view of a fourth prefeπed embodiment of the seat apparatus of the present invention, in a lowered position; Figure 22 is a plan view from above of the aπangement of part of the support frame of the seat apparatus of the present invention; Figure 23 is a side view of the seat cover lifting mechanism of the seat apparatus of the present invention, with the cover in the closed position; Figure 24 is a side view of the seat cover lifting mechanism of the seat apparatus of the present mvention, with the cover in the open position; Figures 25a, 25b, 25c and 26a, 26b, 26c show two embodiments of an extension portion of the seat apparatus of the present invention; Figure 27 is a back view of the fifth prefeπed embodiment of the seat apparatus of the present invention in the same position as in Fig. 1 ; Figure 28 is a back view of the fifth prefeπed embodiment of the seat apparatus of the present invention in the same position as m Fig. 2; Figure 29 is a side view of a first prefeπed embodiment of the wheeled chair of the present invention; Figure 30 is a front view of a first prefeπed embodiment of the wheeled chair of the present invention; Figure 31 is a back view of a first prefeπed embodiment of the wheeled chair of the present mvention; and Figure 33 is a plan view from above of a first prefeπed embodiment of the wheeled chair of the present invention. BEST MODES FOR CARRYING OUT THE INVENTION Referring to Figs. 1 to 6, a toilet seat apparatus 2, which is capable of height adjustment to a plurality of positions, is thereshown. The apparatus 2 includes a hmged seat component 3 (of known type), a clampmg band 4, five telescoping legs 5, each leg 5 being withm a holder 6, and a seat frame 11 (as best shown m Figs. 1 and 2). The apparatus 2 is associated with a standard, fixed toilet bowl 7 (Figs. 1, 3, and 5) which has a base 8 and in-turned, top edge 9. The plumbing and aπangement of the bowl 7, the base 8, and the top edge 9 are all of known type. The apparatus 2 further mcludes a hmged lid 19 securable to the frame 11 at the back thereof. The hinged securement is of the same type as is known for securement of a hmged seat cover to a known toilet seat. The clampmg band 4 is a metal band, of known type, which is clamped about the top edge 9 to secure the apparatus 2 to the bowl 7. The seat frame 11 is also a metal band of the same general shape and type as the clampmg band 4. Preferably these two components, the clampmg band 4 and the seat frame 11, sit together m complementary manner when the seat is in the lowered position (of Figs. 2, 4 and 6). If so desired, an additional brace 22 (Figs 5 and 6) across the back of the toilet may be added to the clampmg band 4. Such a brace, if used in conjunction with the clampmg band 4, may be secured by use of the existing bolt holes (for securement of the lid to the bowl). Referπng to Figs. 1, 3 and 5, each leg 5, which is capable of sliding withm the respective holder 6, is secured at the top thereof to the seat frame 11. The respective holder 6 is secured to the clampmg band 4 by a rigid flange 12. Optionally the flange 12 includes an additional shoulder 13 at the top to further locate the top of the respective holder 6. Refeπmg to Figs. 1 to 4, each holder 6 incorporates a plurality of holes 14 evenly spaced along the height thereof. The respective leg 5 includes a detent mechanism compπsmg a spnng loaded pm 15 capable of locating m and through each hole 14 depending on the height of the leg 5 relative to the holes 14. In the embodiment shown the apparatus includes five telescoping legs 5 (and coπespondmg holders 6): two spaced on opposing sides and one at the front of the bowl 7. However, it will be appreciated that there may be three legs 5, with one positioned at the front of the bowl 7, and two adjacent the rear of the bowl 7, one on each side thereof Alternatively, there may be four legs 5, (and coπespondmg holders 6), with the front leg 5 omitted, as is desired It will be appreciated that after disengaging the pms 15, the legs 5 may be moved from position to position with ease, thereafter locating and locking in another hole to fix the height of the apparatus 2, until adjustment is again required. While shown as pms 15, the detent means may mclude other known detent mechanisms such as spring loaded ball bearings, if so desired. Thus a disabled person may be able to adjust the height of the apparatus 2 with comparative ease, but also be assured that the apparatus 2 will remain at the chosen height until further adjustment to the legs 5 is made. Refeπing to Figs. 1 and 7 to 9, a seat 3 having a removable insert 16 is thereshown. The seat 3 includes a top flange 17 which is capable of being supported by the seat frame 11, being raised and lowered therewith. The msert 16 is of a shape complementary to the internal shape of the top 9 of the bowl 7. Alternatively, the msert may be constructed from flexible mateπal in order to conform to the inner shape of a range of different models of toilet bowl 5, it may for example be of a bellows or concertina type construction, thereby providing a continuous connection between the bowl 7 and the seat 3. The top flange 17 of the seat 3 further mcludes a heatmg coil 21 of known type within the body of the flange 17 or on the underside thereof. The insertion and aπangement of the heatmg coil 21 can be fashioned in known manner. The coil 21 is connected electrically to a thermostat and on/off controls 20 (Fig. 8, 9), in known manner. The top 17 mcludes a cover 18 coveπng the coil 21, in order that the user does not come mto contact with the exposed coil 21. Thus, with a known 100 watt heatmg coil 21, extra low voltage and a known transformer (not shown), the heatmg coil 21 may be left on thermostatic control. The voltage range is 12 to 24 volts. The above described apparatus 2 operates as follows: The apparatus 2 starts in the lower position (Fig 2, 4 and 6) In this position any insert 16 is either removed or nested withm the bowl 7, depending on the shape and size of the insert 16. The lid 19 is closed m the normal manner. The legs 5 each fully encased withm the respective holder 6, with the pm 15 in the lowermost hole 14 (Fig 4) Alternatively, the insert 16 may further include a Imer (not shown) of the same general shape as the straight sided msert 16 - The Imer may be removable for washing (etc) The apparatus 2 is raised to an elevated position by pressing m the pms 15 and pulling the frame 11 and the apparatus 2 in an upward direction. The release of the pms 15 is automatic and allows the legs 5 to slide m an upward direction until the pins 15 engage with a hole 14 in a higher position on each respective holder 6. Once all the pms 15 are engaged, the apparatus 2 is retained in an elevated position. Depending on the height selected, the msert 16 either sits on top of or withm the bowl 7. The insert 16 can thus be easily removed for cleaning. As the lid 19 is hmged to the frame 11 , the lid 19 also moves up with the apparatus 2. The lid can be opened in standard manner, and the insert 16 placed so that the top flange 17 rests on the seat frame 11. It will be appreciated by those skilled m the art, that with a plurality of holes 14, the height to which the apparatus 2 is raised can be selected to suit the user. It will also be appreciated by those skilled in the art that only two or three sets of holes 14 may be needed. Also, it will be appreciated that the shape of the insert 16 may be adapted so that the msert 16 can remain permanently a part of the apparatus 2, if so desired. The insert 16 may be of any appropπate mateπal that is easy to keep clean, and with an aesthetically pleasing surface finish. For example the material of the insert 16 may be selected from: plastics materials, fibreglass, metal, and wood, or any combination thereof. It will further be appreciated that the clampmg band 4 can be secured releasably about the bowl 7. Thus, should the height adjustment no longer be needed the apparatus 2 can be removed. A seat and lid of standard type can be re-secured to the bolt holes on the standard toilet bowl 7, m known manner, once the apparatus 2 of the present mvention is no longer needed on a longer term basis. Whilst the above descπbed apparatus 2 has been descπbed with reference to the addition of an msert 16, it will be appreciated that this may be omitted, if so desired. Similarly, if so desired, the heater coil 21 and associated thermostat 20 may be omitted Also, it will be appreciated that whilst the invention is described with reference to a fixed, standard type of toilet, the apparatus 2 may be adapted to fit a commode or other type of portable toilet with a bowl, as described below Referring to Figures 10 and 11, a variation of the first embodiment of the apparatus 2 is thereshown Like numbered parts refer to the same part as for the first prefeπed embodiment In this variation the apparatus 2 is actuated usmg fluid power Preferably lmear actuators are employed, alternatively other types, such a cushion type actuators may be used The legs 5 incorporate double-acting rams, the actuation of which is controlled via a manual lever 23, of known type. Optionally, the double acting rams may be replaced by singe acting rams In Figure 10 a side arm 24 is shown in the down position. In Figure 11 the side arm 24 is shown m the up position The arm 24 is formed of a "U" channel of steel. However, it will be appreciated that any type of material suitable for an armrest, with or without padding, may be used. The armrest 24 is hmged at both ends about pivot pomt 25, m known manner. It will be appreciated that with known types of aπangement, a three-position arm rest 24 may also be incorporated without departing from the scope of the mvention. Also illustrated is a toilet roll holder 24a fitted to the arm mounting. Referπng to Figures 12 to 14, the second prefeπed embodiment of the seat apparatus 22 of the present is thereshown. Like numbered parts refer to the same part as m the first prefeπed embodiment. The apparatus 22 incorporates a standard commode chair 32 (shown m dotted outlme) of known type. The chair commode 32 has front, back, sides and legs, m the ordinary manner. In this embodiment the msert 16 has a base as well as sides. The telescopmg aπangement of the legs and holder (5, 6) works m the same manner as for the second prefeπed embodiment, except that there are four legs and holders (5, 6) not five of each. Arms 24, operating in the same manner of the first prefeπed embodiment, are present. These are shown m the drawings but may be optional. The heating element (not shown) and control 23 for controlling the fluid powered lmear actuators is also present. In this embodiment the frame 31 incorporates a plurality of stπps of metal 36, which engage with a nut and bolt of known type 33 at the top of the telescoping arms and holders (5, 6). Refenmg to Figures 14 to 19 these disclose a third prefeπed embodiment of the apparatus of the present invention 42. Like numbered parts refer to the same part as for the first prefeπed embodiment. In this third embodiment the detent means are connected mechanically in order that they can be operated by a smgle action. Stops 15 withm each set of telescopmg legs and holders (5, 6) are πgidly connected together by a series of bars 55 (or rigid connecting links). By the operation of the lever handle 56 (Figures 18 and 19) the pms 15 can be pushed mechanically, so that all pms 15 are pushed at the same time. This considerable assists with the raismg and loweπng of the msert 16 and the seat 3. This is especially so with fingers which are not agile Mechanical linkages 57 are aπanged in known manner to operate from one side of the apparatus 42 to the second side In this embodiment of the apparatus 42 there is also shown a skirt 59 (in dotted outlme) The skirt is provided to drape and hide the sets of telescopmg legs and holders (5, 6) and to act as a protection to the person usmg the toilet from any hard corners or edges of the apparatus 42 The skirt 59 may be of any appropπate protective material for example; an injection moulded plastic shape of rigid form. Other known materials may be used, as is desired It will be appreciated that the hmgeable arms 24 of the first prefeπed embodiment (Figures 11 and 12) may be used to assist this embodiment of the apparatus 42, if so desired. This embodiment of the apparatus 42 also shows a lengthening strap 60 (Figures 14 and 15), which can be used to adjust the width of the back portion of the apparatus 42. It will be appreciated by those skilled in the art that the width of the back of all styles and designs of toilets is not constant. With the assistance of straps 60, the rear end of the apparatus 42 may be adjusted in width to accommodate such vaπations. Also to accommodate such vaπations the seat 17 of the msert 16 may mclude flanges 16a hmgeable at 17a and movable withm a limited range as provided by slots 36 (Figure 8). In this manner the width of the msert 16 and apparatus 42 (or apparatus 2) may be vaπed to accommodate varying types and styles of toilet bowls 7. Referπng to Figures 20 and 21, a fourth prefeπed embodiment of the apparatus 62 is thereshown. Like numbered parts refer to the same part as for the first prefeπed embodiment. In this fourth prefeπed embodiment the apparatus 62 incorporates the lever arm 56 and aπangement of straps 55 for operation of the pms 15 in the legs and inserts (5, 6). The apparatus 62 includes an insert 36 of the second prefeπed embodiment. Also shown a hmged back 66, which can fold down flush with the seat cover 3. The base of the legs and holders (5, 6) incorporate feet 67 having removable pads 167 adapted to enable the apparatus 62 to be rested on the ground or on a chair. The feet 67 are telescopically extendable and may also be readily removed if not required. It will be appreciated that the apparatus 62 is very compact and could also be positioned on a low table or other furniture when needed. It is also well adapted for use in a car, caravan or out-of-doors when camping etc. Whilst the hmgeable back 66 has been shown with reference to the fourth prefeπed embodiment 62, it will be appreciated that the hmged back 66 may also be used m other embodiments, as is desired. Preferably the back 66 is from a rigid metal strip, or other known materials appropriate for use for a backing support for a person. It may be padded or not, as is desired. Refeπmg to Figure 22, the means of clamping the apparatus 2 to a bowl 7 includes slotted members 132 positioned about the periphery of the bowl. Adjustability to accommodate bowls 7 having varying dimensions is provided by way of slots 132a m the members 132 fixed together with nuts and bolts 32b, which can be tightened once the width of the apparatus 62 is adjusted Refenmg to Figures 23 and 24, a mechanism for raising and holding the seat 3 includes a segment 160 about the centre of which the seat 3 is hmged for rotation A spπng-loaded catch 122 engages the segment 160 to prevent rotation thereof, the catch is releasable by the actuation handle 121 of peddle 124, and thereafter returns to the locked position. A mechanical linkages (of known type) mcludes sliding shaft 161 which is slidably fixed to collar 125. By operation of this arrangement 120 in known manner the cover or seat lid 3 can be raised and lowered by someone of limited agility by use of hand (lever arm 121) or foot (lever arm 124). Figures 25a, 25b, 25c, and 26a, 26b, 26c show two versions of a shield, which can be used in any embodiment of the apparatus (2, 22, 42, 62) in front of the front portion of the insert (16, 36). The shield (90, 100) is shaped to fit about the toilet bowl 7 at the front thereof. Figure 26(a-c) shows non- adjustable shield 90. Figure 27 shows an adjustable shield 100 of two portions (100a and 100b). The two portions are slotted 101 with nuts 102 for adjustability of the overall length of the shield 100. Figures 27 and 28 disclose a fifth prefeπed embodiment of the apparatus 82, which incorporates a curved shield 100 without the insert 16. This embodiment also incorporates the skirt 59 and lever 56 for operation of all pms 15 simultaneously, and the adjustability straps 60. Also included is a lever arm 120 for the toilet seat cover) as shown in Figures 24 and 25 (a-c). Referπng to Figures 29 to 32, there is thereshown a first prefeπed embodiment of a wheeled chair 200 in accordance with the present invention. The wheeled chair 200 incorporates elements of the apparatus (2, 22, 42, 62, 82) m all the embodiments discussed above. Where like numbers are used, like elements are present. The chair 200 incorporates an msert 16, five legs 5 and holders 6. A hmgeable back 66 and two side arms 224 are present. The side arms 224 incorporate rollers 225 but are otherwise hmgeable like manner as the arms 24. The rollers 225 can be used when the arm 224 ls in a hoπzontal position, to assist the passage of someone from a bed (or the like) to the chair 200. The chair 200 incorporates a seπes of wheels 201 of known type. Referπng to Figure 32, the front wheels 202 are steerable by means of a small steering wheel 203 at a height suitable for work g by a person sitting m the chair 200 A seπes of axles 203 a operable m known manner permit the transfer of rotation of the steeπng wheel 203 to the wheels 202 to enable steeπng of the chair. Footrests 204 can be positioned appropriately either side of the front wheels 202 or above the wheels 202 for keeping the feet out of the way of the wheels 202. A battery 210 provides motor power. This can be an appropπate size for running the engine 211 at the rear of the vehicle 200. A series of pulleys 212 and a bevel gear aπangement 213 (Figure 31) transfer power from one side of the chair 200 to the other This aπangement is required so that the chair 200 can be backed over toilet 7. Thus the adjustability of the height of the chair 200 can be used in conjunction with the toilet 7 so that an adjustable toilet seat is provided withm the chair 200 It will be appreciated however that if the portable insert 36 (with base) is used the gear linkage and drive axle from the pulleys 212 to the second side of the chair 200 may be more direct and need not follow the aπangement shown in Figure 32 for transferring motion in a vertical and horizontal direction, so that the chair clears the toilet 7. A brake 214 is used with a series of individual levers in known manner to provide a brake for one wheel 201 or all wheels 201, 202 in known manner. The brake 214 can be of the type that bears against a wheel 201 or 202 and can be used to stop the chair 200, or to anchor it in a desired position. Optionally a ratchet clutch of known type may be incorporated into the chair 200. This permits the chair 200 to be stationary, with the motor 212 running; and also permits the wheeling of the chair 200 when the motor 212 is not running. At speed controller 220, is shown, operable in known manner. Whilst the chair 200 has been shown with steering, clutch, motor power, brakes and footrests, it will be appreciate by those skilled in the art that the chair 200 may have any or all of these features, either separately or in combination, as is desired. The degree to which all these features are present will depend in part on the degree of mobility and dexterity of the user. Referring to Fig 29, an additional set of telescoping inserts 226 may be added to each telescoping leg and insert (5, 6) to raise the chair 200 clear of the wheels(201,202). This permits the chair 200 to be parked without using the brake 214. Additionally, the chair 200 can be used as a commode, in known manner. Aspects of the present invention have been described by way of example only and it should be appreciated that modifications and additions may be made thereto without departing from the scope thereof.

Claims: CLAIMS: 1. A height adjustable toilet seat apparatus for use with a toilet bowl, said apparatus mcludmg: a toilet seat; clampmg means for releasably securing said apparatus about the outside of the toilet bowl; raismg or lowermg means fixed to the said clampmg means and means adapted for laterally restraining the said seat; and means for fixing the said raising or lowering means at a predetermined height. 2. A height adjustable toilet seat apparatus as claimed in claim 1 wherem the said raismg or loweπng means mcludes a plurality of telescoping legs. 3. A height adjustable toilet set apparatus as claimed m claim 2 where the said means for fixing the said raising or loweπng means comprises detent means associated with the said legs. 4. A height adjustable toilet seat apparatus as claimed m any one of claims 1 to 3 wherem the said raising or loweπng means are fluid actuated. 5. A height adjustable toilet set apparatus as claimed in any one of claims 1 to 4 wherem said seat mcludes hinging means for releasably secuπng the seat to the apparatus. 6. A height adjustable toilet set apparatus as claimed m any one of claims 1 to 5 wherem said toilet bowl is selected from an existing toilet and a portable toilet pan. 7. A height adjustable toilet set apparatus as claimed m any one of claims 1 to 6 wherein said toilet bowl is a portable toilet pan and the apparatus is incorporated mto a chair. A height adjustable toilet set apparatus as claimed m any one of claims 2 to 7 wherem said telescopmg legs are interconnected and operable by a lever to remotely disengage said engaged stops of the legs. A height adjustable toilet set apparatus as claimed m any one of claims 1 to 8 wherein the number of legs is selected from four and five. 10. A height adjustable toilet set apparatus as claimed m any one of the precedmg claims wherem said seat further mcludes an msert releasably engageable with the said seat where the said msert is adapted to conform to the internal shape of the said bowl. 11. A high adjustable toilet seat as claimed in claim 10 wherem said insert incorporates concertina sides. 12. A height adjustable toilet set apparatus as claimed in claim 10 or 11 wherem the said insert is made from a mateπal selected from the group: plastics, fibreglass, metal, and a combination thereof. 13 A height adjustable toilet set apparatus as claimed in any one of the precedmg claims wherem the seat is supported by a framework capable of supporting the said seat and shaped to fit about or around the top of the bowl and made of a material selected from: steel, plastics, aluminium alloys, wood, and a combination thereof. 14 A height adjustable toilet set apparatus as claimed in any one of the precedmg claims wherem said seat further includes means to heat said seat 15. A height adjustable toilet set apparatus as claimed m any one of the precedmg claims wherem said heatmg means is thermostatically controlled and the heatmg is by resistance means. 16. A height adjustable toilet set apparatus as claimed in any one of the precedmg claims wherem said seat further includes one or more of the following elements: (a) One or two arm rests; (b) a back rest; (c) a protective skirt aπanged about the telescopmg legs; and (d) a lever arm for remotely opening and closing a toilet seat cover. 17. A height adjustable toilet set apparatus as claimed in claim 13 wherem each said arm rest and the back rest are collapsible. 18 A height adjustable toilet set apparatus as claimed in either claim 16 or claim 17 wherem one or both arm rests further mclude one or more rollers operable when the arms are in a planar position with the seat. 19 A height adjustable toilet set apparatus as claimed m any one of claims 13 to 15 wherem said skirt is injection moulded from a plastic. 20. A height adjustable toilet set apparatus as claimed m any one of the precedmg claims wherem said framework further includes means to adjust the width of the rear of the seat 21. A height adjustable toilet set apparatus as claimed in claim 20 wherem said adjustment means for the width and height of the seat further mcludes pivotable flanged portions on each side of the seat. 22. A wheeled chair, said chair including: (a) a height adjustable toilet seat apparatus, as claimed in any one of the preceding claims; and (b) a plurality of wheels aπanged about and under the apparatus. 23. A wheeled chair as claimed in claim 22 wherem said chair further mcludes steeπng means to turn at lest one set of wheels. 24. A wheeled chair as claimed m either claim 22 or claim 23 wherem said chair further mcludes means operable to apply a brake to one or more wheels. 25. A wheeled chair as claimed m any one of claims 22 to 24 wherem said chair further mcludes power means and a motor operable by the user. 26. A wheeled chair as claimed m claims 25 wherem said chair further includes clutch means permitting the disengagement of the motor. 27. A wheeled chair as claimed m any one of claims 22 to 26 where said chair further includes one or two footrests.

Inventors: MILLER STUART EARL CRISPIN, MILLER, STUART, EARL, CRISPIN
Applicants: MILLER STUART EARL CRISPIN, MILLER, STUART, EARL, CRISPIN
Application year: 2000
Main classification: A47K13
IPC codes: A61G5, A61G7