Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L1/00—Cleaning windows
  • A47L1/06—Hand implements
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
  • A47L13/11—Squeegees
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25G—HANDLES FOR HAND IMPLEMENTS
  • B25G1/00—Handle constructions
  • B25G1/06—Handle constructions reversible or adjustable for position

Definitions

• This invention relates generally to squeegees and in particular to a squeegee having a head, handle and wiping blade which can be moved into general linear relation for cleaning glass surfaces, even surfaces located in recessed corners.
• Squeegees are widely used to clean windows quickly and effectively. Generally the cleaning process begins with wetting the window surface with water or a cleaning solution. The squeegee is then used to wipe off the water or cleaning solution and any accumulated dirt or dust leaving the window surface clean.
• a movement sometimes known as the "butterfly stroke" is used in which the squeegee's wiping blade is initially placed along the edge of one corner of the window; then the entire surface of the window is wiped off in a continuous back- and-forth swirling motion from the top to the bottom of the window without removing the wiping blade from the surface, finishing the motion by drawing the blade to the edge of another corner.
• a common architectural feature calls for windows to be recessed into a window frame or to be set immediately adjacent to a perpendicular wall. If the window is recessed more than a few inches, or set next to a wall, wiping off the entire window in a continuous stroke as described above may not be possible, because the handle will butt against the adjacent window frame or wall. When this happens, the conventional practice is to wipe the small section of window clean with a cloth. Alternatively, the window cleaner may remove the squeegee from the window, wipe the blade clean, reposition the squeegee so that the blade may be applied again to the window edge adjacent the frame or wall, and then finish wiping the window clean with a second stroke. Either alternative is less efficient than wiping a window clean in a single continuous motion and may produce streaking.
• a U-shaped kicker arm is carried on the back side of the mount.
• a squeegee blade is held on the front side of the mount.
• the mount is biased to a normal position by a pair of springs extending between the kicker arm and the pair of fingers.
• the kicker arm engages the abutment and orbits the mount, consequently driving the blade through an arc relative to the handle and thereby accelerating movement of the wiper blade to complete the stroke in the direction of the abutment.
• Samuelsson reorients the wiper blade with respect to the handle, the device appears to be workable only on windows that are not deeply recessed.
• the reorientation of the blade to the handle also may cause an undesirable reduction in the cleaning effectiveness of the squeegee blade as it passes through the accelerating movement.
• Another practical difficulty is that the kicker arm, mount, and dual fingers project from the otherwise generally contained outline of the squeegee and may interfere with or become tangled up in other equipment.
• the device is not contained within the body of a standard squeegee; it is a separate device that must be specially mounted to the head of a squeegee and adds another item to the inventory of equipment that a window washer must carry.
• a spring-biased pivoting squeegee provides a wiping blade transversely mounted on the forward portion of the head of a squeegee.
• a handle is pivotally attached to a back portion of the head about a pivot pin which forms an axis parallel to the wiping blade.
• the head is movable relative to the handle about the pivot pin between a rest position and a biased position. In the rest position the head is angularly displaced relative to the handle at an angle which positions the head and wiping blade at an angle conventionally found in prior art squeegees. In the biased position the head is in linear disposition with the handle thus positioning the wiping blade, head, and handle in general planar relation.
• the spring is set at a tension such that, under normal usage, the head and, hence, the wiping blade, are maintained at an angle relative to the handle; however, the tension is low enough such that, without ever removing the blade from contact with the glass surface, the head and wiping blade may be moved to the biased position by pressing down on the handle.
• the head and handle are provided with slip-resistant inserts on the head for gripping by the thumb and an opposing finger, and on the handle for gripping by the palm of the hand and fingers wrapped around the handle, to facilitate movement of the head between the biased and rest positions.
• the handle and head are prevented from over-pivoting beyond planar configuration by abutting surfaces which are brought into mutual contact when the head is moved into the biased position.
• a recessed locking lever is pivotally attached to the squeegee head.
• the locking lever is movable about an axis generally perpendicular to the squeegee head between a locking position and an unlocked position. In the locking position, the lever is in abutting disposition with a stop on the handle.
• Pressure from the spring urges the lever and stop together, effectively locking the head and handle in the biased position.
• the pressure may be relieved by bringing slight backwards pressure against the head whereupon the lever may be rotated into the unlocked position where it is free of any obstructions, thus permitting the head to pivot back to the rest position.
• a tension adjustment mechanism permits the spring tension to be adjusted to different pressure levels.
• a tension adjustment knob is provided on the upper surface of the squeegee head.
• the tension adjustment knob has a barrel fitting which sits in a well in the head to retain a knurled top portion above the upper surface of the head for manipulation by hand.
• a linear projection extends from the barrel fitting into the head and is in threaded engagement with a square tension adjustment nut disposed in a rectangular internal shaft in the head. As the knob is turned the nut is prevented from rotating by the walls of the rectangular shaft. Therefore, rotation of the knob moves the nut up and down in the shaft.
• the U- shaped projection of the spring is disposed around the linear projection and interposed between the tension adjustment knob and the tension adjustment nut.
• a forward portion of the handle has two integral spaced apart generally parallel side plates in concentric relation to the pivot pin.
• Each side plate includes an arcuate recessed portion, the lower part of which defines an upward facing ledge.
• a generally square-shaped lock lever is disposed in downward dependency from the top wall of a downward facing recess in the head of the squeegee.
• the lock lever is comprised of a cylindrical crossbar, a pair of legs depending from the crossbar, and a bridge extending between the legs opposite the crossbar, the bridge, legs and crossbar defining an intermediate opening.
• Each leg has a laterally extending base portion adjacent the crossbar including a stop surface facing downward and away from the top wall of the recess.
• the crossbar of the lock lever is held in pivotable disposition against the top wall by a retainer so that the lock lever is free to pivot about the crossbar between a locked position and a released position.
• the base portions of the legs are interposed between the top wall of the recess and the upward facing ledges of the side plates thus disposing the stop surfaces of the base portions against the ledges of the side plates to prevent the head from rotating from the biased position to the rest position. Pivoting of the lock lever to the released position moves the base portions sufficiently to release the head to pivot to the rest position.
• the retainer is generally planar and has a forward edge, two side edges orthogonal to the forward edge spanning the width of the retainer, and an upward opening channel opposite the forward edge.
• a forward flange and two side flanges orthogonal to the forward flange depend downwardly from the top wall of the recess, the side flanges spaced apart by the width of the retainer.
• Each of the flanges has an inwardly extending tab that is downwardly spaced from the top wall.
• the forward edge of the retainer is held against the forward flange between the top wall and the tab on the forward flange.
• the side edges of the retainer are held against the inner edges of the side flanges between the top wall and the tabs on the side flanges. The retainer is thus held against the top wall between the forward and side flanges.
• the crossbar of the lock lever is held in the retainer's channel against the top wall of the recess.
• An adjustment knob is rotatably disposed on the top surface of the head.
• a post depending from the knob is disposed and freely rotatably in a hole in the top of the head and in an aperture in the retainer in concentric alignment with the hole.
• a spring pull nut is threadedly attached to the post such that rotation of the adjustment knob moves the spring pull nuts towards or away from the adjustment knob.
• the retainer is prevented from being rotating in its plane by the post due to the tight disposition of its forward and side edges against the forward and side flanges of the top wall.
• two springs are coiled around the axis post.
• a forward projection extends from each spring through the opening in the locking lever.
• each spring is downwardly hooked and sits in downwardly biased engagement in oppositely disposed depressions in the spring pull nut laterally of the post.
• the spring tension is thus adjustable by rotation of the adjustment knob which raises and lowers the distal ends of the spring according to a desired comfort level.
• the window washer may cause the head to move into the biased position by simultaneously pressing down on the wiping blade and forward on the handle, never removing the wiping blade from the surface of the glass. Since the wiping blade, , head, and handle are all in planar disposition, the wiping motion can be continued toward the abutting wall or frame member to the edge of the glass, rather than having to remove the wiping blade from and then reapply it to the glass. Thus, an entire recessed window may be cleaned in a single continuous motion with a high degree of proficiency, leading to substantial time savings in the cleaning project, eliminating the need to use additional cleaning implements, and reducing fatigue.
• An added benefit of the invention relates to the angle of the wiping blade to the glass.
• the cleaning performance of the blade is superior. Therefore, the best squeegees include a slight curvature in the wiping blade mount which maintains the blade at an optimum cleaning angle.
• an effort is made to hold the squeegee so that the wiping blade is retained at the optimum cleaning angle.
• the present invention enables the optimum cleaning angle to be retained as the squeegee is moved toward the abutting wall or frame of a recessed window, because the angle of the squeegee head to the window can be maintained by easily altering the angle of the head to the handle.
• the ease in adjusting the angle allows improved performance through a range of positions and provides ergonomic benefits to the user. Even at the extreme edge of a recessed window or in difficult to reach positions, the invention preserves the optimum cleaning angle and the safety of the window washer.
• FIG. 1A is a top perspective view of a spring-biased pivoting squeegee according to the invention showing the head in the biased position relative to the handle.
• Fig 1B is a top perspective view of the pivoting squeegee of Fig. 1A, but showing the head in the rest position relative to the handle.
• Fig. 2A is a bottom perspective view of the invention with the wiping blade removed, and showing the head in the biased position relative to the handle and the locking lever in the unlocked position.
• Fig. 2B is a bottom perspective view of the pivoting squeegee shown in Fig. 2A, but with the head in the rest position relative to the handle.
• Fig. 2C is an exploded perspective view of a spring-biased pivoting squeegee according to the invention.
• FIG. 3A is a side plan view of a pivoting squeegee according to the invention with the handle truncated, and showing the head in the biased position relative to the handle.
• Fig. 3B is a side plan view of the pivoting squeegee of Fig. 3A, showing the head in the rest position relative to the handle.
• Fig. 4A is a bottom plan view of the invention with the handle truncated and showing the locking lever in the locked position.
• Fig. 4B is a bottom plan view of the invention shown in Fig. 4A, but with the locking lever shown in the unlocked position.
• Fig. 5A is a side elevation view of a pivoting squeegee according to the invention, cutaway through the middle of the head to show the spring and tension adjustment mechanism and showing the head in the biased position relative to the handle.
• Fig. 5B is a side elevation view of the invention similar to that shown in Fig. 5A, but showing the head in the rest position relative to the handle.
• Fig. 6A is a side elevation view of the invention showing the head cutaway off-center to show the locking lever in the locked position and showing the head in the biased position relative to the handle.
• Fig. 6B is a side elevation view of the invention similar to that shown in Fig.
• Figure 7A is a perspective view of the spring biased pivoting squeegee according to the invention showing the head in the biased position relative to the handle.
• Figure 7B is an exploded view of the squeegee shown in Figure 7A.
• Figures 8A-8C are side, top and bottom views, respectively, of the squeegee shown in Figure 7A.
• the wiping blade, channel and channel clip have been removed from Figure 8C to expose the retainer, spring pull nut, and forward projections of the two springs.
• Figures 9A-9C are sectional views of the squeegee shown in Figure 7A.
• Figure 9A showing the moving of the lock lever between the lock and released positions as indicated by the arrows, and showing movement 9B showing the springs in a lower position and in a higher position indicated by the broken lines, Figure B showing the lock lever in the release position, and the forward projections of the springs in raised position to increase tension on the spring, and Figure 9C showing the head in the rest position relative to the handle, the arrows indicating movement of the head between the biased and rest positions.
• Figure 10A is an enlarged sectional bottom view of the head of the squeegee shown in Figure 7A showing the retainer inserted between the forward and side flanges of the head.
• Figure 10B is a side sectional view of the head shown in Figure 10A taken along lines 10B-10B.
• Figure 10C is forward sectional view of the head shown in
• Figure 11 A is a side sectional view of the knuckle of the handle showing a close-up of one of the side plates of the knuckle and indicating a slight inclination of the upward facing ledge on the forward portion of the side plate.
• Figure 11 B is a perspective view of the lock lever of the invention.
• Figures 12A and 12B are side and top views respectively of the squeegee shown in Figure 7A being held by a hand in a typical manner during use.
• a spring-biased pivoting squeegee 10 is now described in relation to the illustrations according to the invention.
• a spring-biased pivoting squeegee 10 comprises a head 12 to which is mounted a wiping blade 14 and a handle 16.
• the head 12 has a generally planar geometry, a back portion 18, and a forward portion 20.
• the wiping blade 14 is mounted on the forward portion 20 generally transversely to the head.
• the front part of the handle 16 is provided with generally hemispherical forward projecting outer plates 30 each having a center aperture 32, best seen in Fig. 2C.
• the back portion of the head is provided with generally hemispherical rear projecting inner plates 34 disposed generally perpendicular to the head, each having a center opening 36.
• the inner plates 34 on the head 12 fit cooperatively within and in concentric alignment with the outer plates 30 of the handle such that the center apertures 32 and center openings 36 are in axial alignment.
• a barrel nut 38 and screw 40 when assembled and inserted in the center apertures 32 and center openings 36, form a hinge for pivotal attachment of the handle 16 and head 12 around an axis 42 which is parallel to the wiping blade.
• the pivoting head 12 of the squeegee is movable about the axis 42 between a rest position and a biased position in relation to the handle 16, as seen in Figs. 3B and 3A, respectively.
• the rest position displaces the head 12, and thus the wiping blade 14, at an angle relative to the handle so that the wiping blade 14 may easily be held at an optimum angle to the glass for cleaning effectiveness.
• the optimum angle is generally known to be about forty degrees, but this could vary by perhaps ten degrees.
• the head 12 In the rest position, the head 12 is prevented from over- pivoting to a greater angle by abutment of collar 44 with the bottom edge 46 of one of the outer plates 30 on the handle 16 as shown in Figs.
• the spring 60 preferably comprises dual coils 62 which are looped around barrel nut 38 effectively capturing the spring at the axis of rotation 42.
• a U-shaped projection 64 extends forward from coils 62 into head 12.
• Rearward projections 66 extend up generally perpendicular to the U-shaped projection 64 and are held in tension against and in close proximity to dual backstops 68 of handle 16.
• each backstop 68 has a concave forward face 70 against which projections 66 are seated to restrict lateral movement.
• the U-shaped forward projection 64 is held in place in the head 12 by a tension adjustment mechanism described below.
• the tension adjustment mechanism comprises a tension adjustment knob 80 and tension adjustment nut 82.
• the tension adjustment knob 80 has a knurled top 84 to facilitate turning of the knob.
• a barrel fitting 86 extends from the knurled top 84 and is seated in recess 88 in the top surface 90 of head 12.
• the recess 88 is set at a depth appropriate to capture it in the head 12 against lateral movement, but sufficiently shallow that the knurled top 84 is retained at an accessible level above the top surface 90 of the head 12.
• a linear projection 92 extends from the barrel fitting 86 through head 12 and is in threaded engagement with the tension adjustment nut 82.
• the U-shaped projection 64 of the spring 60 passes around the linear projection 92 between the tension adjustment knob 80 and the tension adjustment nut 82 and is biased toward the tension adjustment nut 82 so that the tension adjustment knob 80 is retained in place in the head 12.
• the tension adjustment nut 82 is freely disposed in a rectangularly shaped internal shaft 94 in the head 12 with the squared edges 96 of the nut 82 in sufficient proximity to the walls of shaft 94 that, when the tension adjustment knob 80 is turned, nut 82 is prevented from turning but travels longitudinally in shaft 94. Accordingly, as shown by the shaded lines in Fig.
• the invention provides a squeegee having the head 12 angularly displaced from the handle 16 in a rest position and held in the rest position by spring tension.
• the head is movable to a biased position by pressure bearing against the spring when needed. The head pivots back to the rest position when the pressure is released.
• a locking lever 100 is attached to head 12 but is recessed such that the lever 100 is generally flush with the lower surface 102 of the head.
• Screw 104 is threaded through retention ring 106 of lever 100 into aperture 108 in head 12 for pivoting movement of the lever 100 about an axis perpendicular to head 12.
• Wave washer 110 is provided between the head of screw 104 and ring 106 so that, when screw 104 is backed off slightly from a fully tightened configuration, lever 100 is rotatable between a locking position and an unlocked position, but is held in limited tension sufficient to retain the lever 100 in the last position to which it was moved.
• the locking lever 100 When the head 12 is moved into the biased position relative to the handle 16, the locking lever 100 can be moved into the locking position seen best in 4A. In the locking position the rear face 116 of the locking lever 100 is in abutment with the forward-facing surface 120 of cutout 122 in outer plate 30. The rear face 116 and forward-facing surface 120 are in compressed abutment resulting from the bias of the head 12 toward the rest position. The locking lever 100 is retained in place by head-to-head abutment with forward-facing surface 120 and lateral abutment with collar 44. However, with slight back pressure on head 12, the lever 100 can be pivoted from the locking position to the unlocked position shown in Fig. 4B.
• a second embodiment of the invention includes a head 202 and handle 204.
• the handle 204 includes a knuckle 206 that is pivotally attached to a main handle body 208 with a first shoulder nut 210 and cooperating first retaining screw 212 to permit the handle body 208 to swivel laterally relative to the knuckle 206 about a first axis coincident with the shoulder nut 210.
• the head 202 is attached to the knuckle 206 by a second shoulder nut 214 for pivoting motion about a second axis perpendicular to the first axis.
• the shoulder nut 214 is preferably held in place with a second retaining screw 216 and washers 218. It will be readily appreciated that the handle main body 208, knuckle 206 and head 202 may be pivotally attached by a myriad of mechanisms known in the art.
• a channel clip 220 is attached to the head 202 by threaded fasteners 224 as seen in Fig. 7B.
• a pin retainer 226 is interposed between the head of each fastener 224 and the squeegee head 202.
• the pin retainers 226 in turn hold in place a latch pin 228 each end of which is embedded in opposing holes 230 in the pin retainers.
• the latch pin 228 is rotatably inserted in pin holes 232 in each side of a beveled latch 234 such that the latch 234 is pivotally retained against the underside of the channel clip 220. See also Figs. 9A-9C.
• the channel clip 220 includes an upwardly and forwardly extending flexible tail 236 in biased contact directly with the head 202.
• the latch 234 works like a cam and is pivotable between a compressing position seen in Fig. 9A-9C and a release position (not illustrated) in which it is pivoted away from the head. In the compressing position a wiping blade 238 is tightly held between the forward portion 240 of the head and the channel clip 220. Conversely, when the latch 234 is moved to the release position, tension on the channel clip 220 is relaxed sufficiently for the wiper blade 238 to be removed for installation of a new blade. [0048] With continuing reference to Fig. 7B, the forward portion of the knuckle 206 includes two generally parallel side plates 250.
• the shoulder nut 214 is inserted through concentric holes 252 in the side plates 250 to form the axis for pivoting the head 202 between biased and rest positions seen respectively in Figs. 9A and 9C.
• Each side plate 250 includes a generally arcuate recessed forward portion 254 forming at its lower part an upward facing ledge 256. See Fig. 11.
• a generally square-shaped lock lever 260 is attached to the top wall 262 of a downward facing recess 264 in the head 240 of the squeegee.
• the lock lever 260 is comprised of a cylindrical crossbar 266, a pair of legs 268 depending from the crossbar, and a bridge 270 extending between the legs opposite the crossbar.
• the bridge 270, legs 268 and crossbar 266 define an intermediate opening 272.
• Each leg 268 has a base portion 274 extending laterally adjacent the crossbar.
• the base portion includes a stop surface 276 facing downward and away from the top wall 262 of the recess 264.
• the crossbar 266 of the lock lever 260 is held in pivotable disposition against the top wall 262 by a retainer 274 so that the crossbar 266 forms a pivot axis around which the lock lever 260 is free to pivot between a locked position as seen in Fig. 9A and a released position shown in broken lines in Fig. 9A. In the locked position, with the head of the squeegee in the biased position in linear alignment with the handle as shown in Figs.
• each of the lower parts of the recessed forward portion 254 of the side plates 250 has a forward facing edge 275 which intersects with the upward facing ledge 256.
• the ledge 256 forms a slightly acute angle as shown in Fig. 11.
• the angle is three degrees, but could range approximately from one to fifteen degrees. Biasing the stop surfaces 276 of the lock lever 260 against the ledges 256, forces the stop surfaces towards the side plates 250 and into the intersection of the ledges 256 and forward facing edges 275 to capture the lock lever 260 against the side plate 250. Upward pressure on the head will relieve the biasing pressure of the stop surfaces 276 against the ledges 256 freeing lock lever 260 to be pivoted to the released position. This in turn moves the base portions 274 of the lock lever sufficiently to release the head 202 to pivot to the rest position.
• the retainer 278 is generally planar and has a forward edge 280, two side edges 282 orthogonal to the forward edge, and an upward opening channel 284 opposite the forward edge.
• the two side edges 282 span the width of the retainer 278.
• a forward flange 286 and two side flanges 288 orthogonal to the forward flange depend downwardly from the top wall 262 of the recess 264, the side flanges 288 spaced apart by the width of the retainer 278.
• Each of the flanges 282, 284 has an inwardly extending tab that is downwardly spaced from the top wall 262.
• the forward edge 280 of the retainer 278 is held against the forward flange 286 between the top wall 262 and a side tabs 292 on the forward flange 286.
• the side edges 282 of the retainer are held against the inner edges of the side flanges 288 between the top wall 262 and a pair of side tabs 292 on the side flanges 288.
• the retainer 278 is thus held against the top wall 262 between the forward 282 and side flanges 288.
• the crossbar 266 of the lock lever 260 is held in the retainer's channel 284 against the top wall 262 of the recess 264.
• An adjustment knob 294 is rotatably disposed on the top surface 296 of the head 202.
• a post 298 depending from the knob 292 is disposed and freely rotatably in a hole 300 in the top of the head (See Fig. 7B) and in an aperture 302 in the retainer 278 (see Fig. 10A) in concentric alignment with the hole 300.
• a spring pull nut 304 is threadedly attached to the post 298 such that rotation of the adjustment knob 294 moves the spring pull nut 304 towards or away from the adjustment knob.
• the retainer 278 is prevented from rotating in its own plane from rotation of the post 298 due to the tight disposition of its forward 277 and side edges 282 against the forward 282 and side flanges 288 of the top wall 262.
• two springs 306 are coiled around the axis post 214.
• a forward projection 308 extends from each spring 306 through the opening 268 in the lock lever 260.
• the forward projection 308 of each spring 306 is downwardly hooked and sits in downwardly biased engagement in oppositely disposed depressions 310 in the spring pull nut 304 laterally of the post 298.
• the spring tension is thus adjustable by rotation of the adjustment knob 294 raise and lower the forward projections 308 to achieve a desired comfort level.
• An e- clip 312 attached to the bottom of the post 298 prevents the post from being unscrewed and detached from the spring pull nut 304.
• a squeegee includes strategically placed slip-resistant surfaces on the handle and head to assist in manipulation of the device.
• a top insert 314 on the handle provides a slip-resistant top surface for the palm of a hand. See Fig. 12B.
• a bottom insert 316 provides a slip-resistant undersurface for one or more fingers. See Fig. 12A.
• Two side inserts 318 provide oppositely facing slip-resistant side surfaces for gripping by a thumb and opposing finger or fingers as also shown in Figs. 12A and 12B.
• the slip-resistant surfaces provide improved handling as downward pressure bearing on the top of the handle simultaneously with upward pressure on the bottom of the handle is used to move the head from the rest position to the biased position.
• the slip- resistant surfaces on the head provide improved "finger-tip" control as the squeegee is worked from side-to-side over a window.
• the slip resistant surfaces comprise overmolding inserts set into recesses in the handle and head.
• slip-resistant surfaces would be attached to the head and handle surfaces using adhesives with or without recesses.
• the invention should be used like a conventional squeegee. After wetting the window surface with water or a cleaning solution, the squeegee is applied to the surface at an edge of the window generally with one end of the squeegee blade disposed in a corner of the window.
• the squeegee's wiping blade is then swept across all parts of the window surface where an optimal cleaning angle can be sustained with the head in the rest position.
• an optimal cleaning angle can be sustained with the head in the rest position.
• forward pressure on the handle combined with continuing downward pressure on the wiping blade will pivot the head of the squeegee from the rest position into the biased position.
• the wiping blade of the squeegee can be maintained at an optimum cleaning angle to the glass surface even if the handle, head, and wiping blade are all in linear disposition and the handle is perpendicular to the window.
• recessed windows can be wiped clean with the invention in a single continuous stroke rather than by the inefficient methods of removing the squeegee from the window and starting a new stroke or by hand wiping the remaining uncleaned portion of the window.
• the invention eliminates the need to retract the pole, wipe the blade, then re-extend the pole for a second stroke.
• the locking lever may set the head in the biased position such that the squeegee may be drawn down the entire height of the window to ground level in a single stroke while retaining the wiping blade at an optimal angle to the window surface.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Screen Printers (AREA)
• Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)

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• 2004
  • 2004-05-14 EP EP04752171A patent/EP1633229A4/de not_active Withdrawn
  • 2004-05-14 AU AU2004240619A patent/AU2004240619A1/en not_active Abandoned
  • 2004-05-14 WO PCT/US2004/015080 patent/WO2004103141A1/en active Application Filing
  • 2004-05-14 JP JP2006533055A patent/JP2007502193A/ja active Pending
  • 2004-05-14 CA CA2524657A patent/CA2524657C/en not_active Expired - Fee Related

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