the present invention relates to an applicator or an appliance for applying lotion , soap or cream to the back of a person . similar numerals designate similar items throughout the drawings . fig1 , 2 and 3 are discussed concurrently herein . applicator or appliance 10 includes a two piece elongated handle 12 having a first piece 14 rotatably hinged to a second piece 16 . see fig1 , 2 and 3 . hinge system 18 is disposed at the distal end 20 of first handle piece 14 . second handle piece 16 includes a proximal end 24 with a complementary hinge coupling thereat and a distal head end 26 at the opposite end of handle piece 16 . head piece 30 is partially rotatably connected at distal head end 26 of second handle piece 16 . in other words , the head has limited left - right rotation on the end of the handle . see fig1 . first handle piece 14 may include a special hand grip element 15 for the user . as best shown in fig2 , head piece 30 includes a general planar plate element 32 in a head body 34 . planar plate 32 includes a front face 40 and a rear face 41 . head body 34 is defined on rear face 41 of planar element 30 . head body 34 has a proximal end region 35 with a handle interface coupling thereat . fig2 shows elongated handle 12 in a fully extended position or mode and shows first handle piece 14 in dashed lines when the applicator 10 is in a compact mode . in this collapsed compact position , with first handle segment 14 adjacent second handle segment 16 , the inboard curve 9 on segment 16 matches and is complementary to the outboard curve 7 on first handle segment 14 . in this manner , the first handle segment 14 closely matches and is adjacent and / or touching the second handle segment 16 . handle segment 14 has a slight or shallow depth convex forward facing curve ( about ½ inch deep ) and segment 16 has a matching shallow concave curve . fig4 shows a detail of the hinged coupling between first and second handle segments 14 , 16 . the designations “ proximal ” and “ distal ,” refer to items closer to or further away from terminal end 22 of the first handle segment 14 . distal end 20 of handle segment 14 in the illustrated embodiment , includes an interior channel or cavity with a cam surface 42 having a latch detent 44 on the cam surface 42 . proximal end 24 of second handle piece 16 includes a tang 48 protruding axially from piece 16 . tang 48 has a curved initial contact interface surface 50 at a terminal tang end 51 and has a catch edge 52 at an inboard portion of the contact interface 50 . in operation , the curved initial contact interface 50 cooperates and touches and is adjacent to cam surface 42 . when the catch edge 50 is adjacent and falls within the concave or depressed latch detent 44 , a locking stop is established between the first and second handle segments 14 , 16 . as is known by persons of ordinary skills in the art , the cam surface can be configured on handle segment 16 and the tang 48 can be configured on handle segment 14 . further , the catch and latch may include a simple depression detent 44 and a protrusion or dimple at a distal portion of curved initial contact interface 50 . in other words , tang 48 could have a dimple or other catch that interfaces into latch 44 . the bead and dimple cavity can be reversed on segments 14 , 16 . the locking stop is one of the several important features of the present invention because ( a ) the interface and stop action between distal end 20 and proximal end 24 prohibits further clockwise rotation beyond substantially 180 degrees rotation about hinge 18 , and ( b ) the locking stop with tang 48 and detent 44 securely locks the first and second handle segments together . this enables the user to move the appliance loaded with soap , lotion or cream along his or her back without fear of a collapsing handle . in the absence of a sturdy locking stop , the handle may collapse onto itself . of course , a protruding dimple can be replaced from one handle segment with a depressed detent and the other handle segment could carry the protruding dimple rather than the depressed detent . another significant aspect of the present invention is the curved initial contact interface 50 on the tang . due to the multiple times the user will open and close the appliance , tang 48 has to be durable and nominally flexible as shown by double headed arrow 53 . the tang flexes upon each closure to achieve the snap - in locking effect with the latch - catch . as a result , tang must be fairly rigid and the curved initial contact interface permits the cam surface to easily move over and move tang 48 in a counter rotational manner as compared with the rotational direction of handle segment 14 shown by double headed arrow 13 in fig3 . fig5 diagrammatically shows details of the head piece 30 . head piece 30 is partly rotatably mounted on the distal head end 26 of second handle piece 16 . front face 40 of planar plate element 32 has a plurality of hook ended pins , two of which are identified as pins 61 and 63 in fig5 . head body 34 is attached to or formed on rear face 41 of planar plate element 32 . head piece 32 is partially rotatably mounted on the second handle piece 16 by a handle interface coupling associated with piece 16 and a complementary interface end coupling which is disposed on the proximal edge segment of the head body 34 . in one embodiment , this interface coupling includes a stem 62 having axially protruding stem elements 64 , 66 . stem elements 64 , 66 are spaced apart and move laterally with respect to each other . stem elements 64 , 66 protrude axially above main stem 62 . main stem 62 extends axially above distal end 26 of second handle element 16 . a lock latch is established with these stem elements 64 , 66 based on protrusions , one of which is protrusion 8 coacting with stop 70 formed in the cavity of the head body 34 . stem 62 and stem elements 64 , 66 protrude into head body cavity 72 . the interior surfaces of cavity 72 define stops and latch - catches . the elongated handle has an axial center line 80 shown in fig8 . although the elongated handle in the fully extended position is slightly curved , second handle portion 16 generally has a singular axial center line . head piece 32 partly rotates has shown by double headed arrow 82 in fig8 about axial center line 80 . to limit rotational movement of head piece 32 with respect to handle element 16 , interior stop edges may be included as protruding into the interior of cavity 72 of head body 34 . stop edges limit the rotation of head 32 with respect to the handle . the circumferential stops impact stem pairs 64 , 66 and limit the total left - right rotation of head 34 with respect to stationary handle 16 ( left - right from front view fig1 ). in addition , the head piece includes a biasing mechanism which , in this illustrated embodiment , is a spring 90 . the spring returns head piece 34 to a predetermined angular position with respect to elongated handle 12 . this predetermined position in the present embodiment is the position shown in side view fig2 wherein planar plate 32 always faces forward towards the forward convex curve of handle piece 14 . in a preferred embodiment , rotation of the head piece is limited to 45 degrees about axial center line 80 . in another words , head piece can rotate approximately 22 . 5 degrees to the right shown in fig1 and 22 . 5 degrees to the left shown in fig1 . this partial rotation and biasing towards a singular angular position is another one of the several important features of the present invention . during the application of lotion , soap or cream , it is important that the head piece 30 , slightly rotate in order to accommodate the curves in a person &# 39 ; s back . however , when the person lifts the head piece away from his or her back and skin surface , the head piece should return to the angular predetermined position . other predetermined positions , other than that shown in fig2 , may be selected by the appropriate mechanical positioning of circumferential stops . also , other biasing mechanisms , other than spring 90 , may be utilized . for example , stem 62 may include a long extension subjected to torque twisting that is coupled to the distal end of cavity 72 of head body 34 . if the attached head - handle stem is thin enough , the head piece 30 will partly rotate about the axial centerline 80 . the head will return to the predetermined 90 degree position due to the release of torque force and the twisting return to the angular position by the elongated stem . other biasing mechanisms such as elastic or spring loaded cam elements and cam followers may be utilized . the cam elements act as springs when the stem 62 is rotated in the interior cavity of the head body . another one of the several important features of the present invention is the releaseability of the bearing pad 92 from the front face 40 of the head piece plate 32 . fig7 shows bearing pad 92 which has an exposed front face 94 of a sponge 96 . the rear face 98 of sponge 96 has a thin interfacing cloth . the table listed below shows dimensions and sizes for one embodiment of the present invention . fig7 shows that interfacing cloth 110 has a multiplicity of loops 112 which greatly exceed , on the order of 10 to 1 , the plurality of hook end pins 61 , 63 protruding from front face 40 of head body 32 . pins 61 , 63 can be t shaped , inverted l shaped or mushroom cap shaped in order to define a hook end to catch one or more of loops 112 on thin interfacing cloth 110 . the releaseability of bearing pad 92 is important since sponge 96 becomes slippery with soap or lotion and the user has difficulty in lifting bearing pad 92 from planar , rigid plate 32 . also , the interface cloth after multiple uses may weaken and may improperly separate from the sponge if the bearing pad is not easily releaseable from the face plate . hence , the relatively great spacing between hook ended pins 61 , 63 and the multiplicity of loops 112 on the bearing pad 92 enhances releasability of pad 92 from plate 32 . the releaseability enables the user to remove the bearing pad 92 , wash it and either re - use the pad or replace it with a new bearing pad . the claims appended hereto are meant to cover modifications and changes within the scope and spirit of the present invention . certain features may be omitted in the working embodiments of the present invention and other features may be added to further enhance the operability of the lotion , soap or cream applicator .
the appliance includes a two - piece elongated handle with first and second handle pieces rotatably hinged via a locking stop which locks the handle upon full extension . a head piece rotatably mounted on the second handle piece with a coupling rotatably linking the head to the handle . the head piece is biased to a set position with a spring or torsion loadable stem such that upon rotation , the head returns to the set position . the front face of the planar plate has spaced hook ended pins upon which is releaseably mounted a removable cream bearing pad . the bearing pad includes a sponge pad for the lotion , soap or cream and a thin interfacing cloth attached to the rear of the bearing pad . the interfacing cloth has a multiplicity of loops which cooperate with the hooked pins for removable attachment of the bearing pad on the head piece .