WO2018116288A1 - Ponceuse manuelle - Google Patents

Ponceuse manuelle Download PDF

Info

Publication number
WO2018116288A1
WO2018116288A1 PCT/IL2017/050541 IL2017050541W WO2018116288A1 WO 2018116288 A1 WO2018116288 A1 WO 2018116288A1 IL 2017050541 W IL2017050541 W IL 2017050541W WO 2018116288 A1 WO2018116288 A1 WO 2018116288A1
Authority
WO
WIPO (PCT)
Prior art keywords
handle
abrasion surface
foldable
sander
abrasion
Prior art date
Application number
PCT/IL2017/050541
Other languages
English (en)
Inventor
Simon Sigler
Roni SHMELTZER
Original Assignee
Dimar Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dimar Ltd. filed Critical Dimar Ltd.
Priority to CA3048159A priority Critical patent/CA3048159A1/fr
Priority to US16/471,646 priority patent/US20200094378A1/en
Priority to EP17885294.3A priority patent/EP3558585A4/fr
Publication of WO2018116288A1 publication Critical patent/WO2018116288A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material

Definitions

  • the present invention relates to sanding. More particularly, the present invention relates to a manual sander.
  • the abrasive surface includes a preformed piece of grit-covered sandpaper that is attached to a permanent surface of the sanding device.
  • a worn piece of sandpaper may be replaced with a fresh piece, or sandpaper with one grit sized may be replaced with sandpaper of another (e.g., finer or coarser) grit size.
  • a manual sander or sanding block may include a handle and a flat, typically rectangular, surface to which a similarly shaped piece of sandpaper may be attached.
  • a user may rub the sandpaper surface over the surface to be smoothed.
  • a power sander includes a motorized or pneumatically operated mechanism that may be operated to move the sandpaper with a predetermined motion.
  • the motion may be circular (e.g., as with a disk sander or flap sander), linear (e.g., as with a belt, drum, or straight-line sander), or otherwise (e.g., orbital, with a combination of motions, or otherwise).
  • the sandpaper pieces may be circular, rectangular, triangular, or otherwise shaped.
  • a manual sander including: a handle; a fixed abrasion surface to which the handle is attached; and at least one foldable abrasion surface that is connected to the fixed abrasion surface by a hinge, wherein the handle is manipulable to maintain the fixed abrasion surface and the at least one foldable abrasion surface in an open configuration in which the fixed abrasion surface and the at least one foldable abrasion surface are substantially coplanar, and is manipulable to enable the at least one foldable abrasion surface to fold about the hinge to form a folded configuration in which the fixed abrasion surface and the at least one foldable abrasion surface form a bent surface.
  • the handle includes an axis that is attached to the fixed abrasion surface to enable lateral rotation of the handle relative to the fixed abrasion surface.
  • the handle is configured to be laterally rotated in a forward direction to maintain the open configuration, and in a backward direction that is opposite the forward direction to enable the folded configuration.
  • the rotation in the forward direction causes an end of the handle to extend beyond the hinge.
  • the handle includes a locking structure that is configured to engage cooperating structure to lock the handle to maintain the fixed abrasion surface and the at least one foldable abrasion surface in the open configuration.
  • the cooperating structure is located on a foldable abrasion surface of the at least one foldable abrasion surface.
  • the locking structure is at an end of the handle and the cooperating structure is located at an edge of the at least one foldable abrasion surface that is furthermost from the hinge to which that foldable abrasion surface is connected.
  • the locking structure and the cooperating structure are configured to lock the handle when a longitudinal axis of the handle is substantially perpendicular to the hinge.
  • the locking structure includes an indentation in a base of the handle, and the cooperating structure includes a locking tab on the at least one foldable abrasion surface.
  • the fixed abrasion surface and the at least one foldable abrasion surface form a substantially circular abrasion surface when in the open configuration.
  • the sander includes a retaining mechanism that is configured to retain the fixed abrasion surface and the at least one foldable abrasion surface in a folded configuration.
  • the retaining mechanism includes a retaining structure on the handle, and cooperating retaining structure that is located on a foldable abrasion surface of the at least one foldable abrasion surface.
  • the retaining structure includes a ferromagnetic plate and the cooperating retaining structure includes a magnet.
  • the cooperating retaining structure is located on a locking tab of the at least one foldable abrasion surface.
  • the retaining mechanism is configured to retain the at least one foldable abrasion surface substantially perpendicular to the fixed abrasion surface.
  • the handle includes a socket to enable attachment of an extension handle.
  • the extension handle includes an eccentric knob.
  • an attachment stem of the extension handle and the socket include cooperating guiding structure to maintain an orientation of the extension handle relative to the socket.
  • the hinge includes a groove.
  • method for preparing a manual sander for smoothing a work surface including: providing the manual sander, the sander including an abrasion surface that includes a fixed abrasion surface and at least one foldable abrasion surface that is connected to the fixed abrasion surface by a hinge; and manipulating a handle that is connected to the fixed abrasion surface to maintain attached the fixed abrasion surface and the at least one foldable abrasion surface in an open configuration in which the fixed abrasion surface and the at least one foldable abrasion surface are substantially coplanar, and attaching a piece of sandpaper to the substantially coplanar surfaces; or manipulating the handle to enable the at least one foldable abrasion surface to fold about the hinge to form a folded configuration in which the fixed abrasion surface and the at least one foldable abrasion surface form a bent surface; placing the piece of sandpaper on the work surface such
  • FIG. 1A schematically illustrates a manual sanding device in accordance with an embodiment of the present invention.
  • Fig. IB schematically illustrates the manual sanding device shown in Fig. 1A, with the sanding surface visible.
  • FIG. 2A schematically illustrates the manual sanding device shown in Fig. 1A when locked in an open configuration.
  • FIG. 2B schematically illustrates the unlocking of the manual sanding device shown in Fig. 1A.
  • Fig. 2C schematically illustrates the manual sanding device shown in Fig. IB when folded.
  • Fig. 3 schematically illustrates an extension handle for the manual sanding device shown in Fig. 1A.
  • FIG. 4 schematically illustrates components for assembly into the manual sanding device shown in Fig. 1A.
  • Fig. 5A schematically illustrates a side view of attaching a piece of sandpaper to the manual sander shown in Fig. 2A when in an open configuration.
  • Fig. 5B schematically illustrates a folded configuration of the manual sander for smoothing an inside corner.
  • FIG. 5C schematically illustrates preparation of the manual sander shown in Fig. 1A for smoothing an outer corner.
  • Fig. 5D schematically illustrates preparation of the manual sander shown in Fig. 1A for smoothing a convexly curved surface.
  • the terms “plurality” and “a plurality” as used herein may include, for example, “multiple” or “two or more”.
  • the terms “plurality” or “a plurality” may be used throughout the specification to describe two or more components, devices, elements, units, parameters, or the like.
  • the method embodiments described herein are not constrained to a particular order or sequence. Additionally, some of the described method embodiments or elements thereof can occur or be performed simultaneously, at the same point in time, or concurrently. Unless otherwise indicated, the conjunction “or” as used herein is to be understood as inclusive (any or all of the stated options).
  • a manual sander is convertible to an open configuration that is suitable for smoothing a substantially flat work surface, or to a folded configuration that is suitable for smoothing a joint or corner between two substantially flat work surfaces.
  • an abrasion surface of the manual sander may include one or more foldable sections or wings that enable the abrasion surface to be configured to form a single substantially flat and coplanar abrasion surface, or to form a bent abrasion surface.
  • the manual sander includes a handle and the abrasion surface.
  • the sander may be manipulated by a user who is holding the handle to rub the abrasion surface over a work surface (e.g., wood, drywall, or another type of work surface) that is to be smoothed.
  • a work surface e.g., wood, drywall, or another type of work surface
  • the abrasion surface may be inherently abrasive (e.g., roughened or coated with an abrasive grit or other abrasive material, or may incorporate a metal rasp or similar surface), or may be configured to hold a piece of sandpaper substantially flat against a mounting surface.
  • sandpaper may refer to any type of replaceable or disposable sheet-like abrasive material.
  • the sandpaper may be held to the mounting surface by one or more clips or other holding structure, or may be held by an adhesive.
  • the adhesive may include an adhesive material (e.g., adhesive tape, glue, or other sticky or tacky surface), or may include a mechanical adhesive surface (e.g., a hook-and-loop fastener such as VelcroTM).
  • the abrasion surface includes a fixed section and one or more foldable sections.
  • the foldable sections may be connected to the fixed section by a hinge.
  • a hinge refers to any substantially straight connection between two sections or surfaces that enables relative folding or rotation of the sections or surfaces about the axis of the hinge.
  • the hinge may include a groove, scoring, or other modification in an otherwise continuous piece of material (e.g., a plastic disk) that facilitates folding relative to one another of two regions on opposite sides of the hinge.
  • a hinge structure may enable folding of two pieces of a rigid material (e.g., metal, wood, or another rigid material) relative to one another.
  • the handle is attached to the fixed section of the abrasion surface in a manner that allows for manipulation of the handle relative to the fixed section.
  • the attachment may enable rotation or translation of the handle relative to the fixed section.
  • the attachment may be such that the handle cannot be readily removed from the fixed section without disassembling, breaking, bending, or distorting the fixed section, the handle, or both.
  • an axis of the handle may be attached to the fixed section in a manner that enables rotation of the handle relative to the fixed section while not enabling ready removal the handle from the fixed section.
  • a tab or extension of the handle may extend into a slot of the fixed section, or a tab or projection from the fixed section may extend into a slot of the handle, in a manner that enables sliding or translation of the handle relative to the fixed section but not ready removal of the handle from the fixed section.
  • the handle may be manipulated to lock or hold the abrasion surface such that the abrasion surface is maintained in an open configuration.
  • the handle may be mounted on or attached to the fixed section of the abrasion surface.
  • the handle may be configured to rotate relative to the fixed section, or to translate or slide relative to the fixed section.
  • locking structure of the handle may engage cooperating structure on a foldable section of the abrasion surface.
  • one or more of the foldable sections may be fixed in an open configuration.
  • a rigid structure of the handle may block any folding of the foldable section.
  • the motion of the handle may activate or trigger a mechanical or actuated locking mechanism, e.g., on the fixed section, to engage cooperating structure, e.g., on a foldable section.
  • the fixed and foldable sections of the abrasion surface are substantially coplanar configuration to form a substantially flat abrasion surface.
  • a flat abrasion surface may be used to smooth a substantially flat or gently curved surface (e.g., a surface whose curvature is sufficiently small so as to enable the substantially flat abrasion surface to be manipulated and rubbed over so as to smooth the gently curved surface).
  • the handle may be manipulated to enable a folded configuration of the abrasion surface.
  • the handle may be rotated or translated so as to disengage the locking structure from the cooperating structure (or to cause or enable a locking mechanism to disengage from cooperating structure).
  • one or more foldable sections of the abrasion surface may be folded inward.
  • inward folding refers to folding a foldable section in a direction that is away from the abrasive surface of the section.
  • the abrasion surface may take the form of two or more sections that present a convex fold or bend.
  • the convex abrasive surface When the convex fold of the abrasion surface is aligned parallel to a concave junction between two surfaces (e.g., at an internal corner where two flat walls meet) and inserted into the concave junction, the convex abrasive surface may be rubbed (e.g., parallel to the junction, or otherwise) to smooth the surfaces at the concave junction.
  • the foldable sections of the abrasion surface may be folded outward (opposite the inward folding, e.g., in the direction of the abrasive surface of the foldable section).
  • the surface When folded outward, the surface may conform at least approximately to the form of a convex surface (e.g., the outer surface of a cylindrical workpiece).
  • the manual sander may include retaining mechanism structure that is configured to retain the abrasion surface in one or more folded configurations.
  • the retaining mechanism may include retaining structure that is located on the handle.
  • the retaining structure on the handle may be configured to engage cooperating retaining structure on one or more of the foldable sections.
  • the retaining structure and the cooperating retaining structure may include parts of a snap fastener, a magnet and a ferromagnetic plate, hook-and-loop fasteners, clips, or other retaining structure.
  • the retaining structure may be configured to retain a fold between two sections of the abrasion surface at a hinge in a particular configuration.
  • the retaining structure may maintain the fold at a right angle, or at another fixed angle.
  • the retaining structure may be configured (e.g., with two or more stops or other structure) to maintain the fold at two or more predetermined fixed angles.
  • the retaining structure may be configured (e.g., with a clamp or other structure) to enable a user to fix the fold at an arbitrarily selected angle (e.g., within a predetermined range of angles).
  • any folded sections may be unfolded until all sections of the abrasion surface are substantially coplanar.
  • Any retaining structure that is retaining any of the sections in a folded configuration may be caused to release the folded sections.
  • the retaining structure e.g., in the form of a magnet, snap fastener, hook-and-loop fasteners, or other types of fastening structure
  • the retaining structure may be configured to release when an unfolding force or torque is applied to the folded sections.
  • the retaining structure e.g., in the form of a clip, latch, or other type of fastening structure
  • the handle may be manipulated (e.g., rotated or translated) to lock the sections in a flat configuration.
  • the handle may include a grip that is configured to facilitate grasping and manipulation of the handle, manual sander, or both, by a user.
  • the handle may include structure to enable attachment of an extension handle.
  • the handle may include one or more sockets into which an extension handle may be inserted.
  • the extension handle may be of fixed length and shape, may be telescoping, may be bendable, or may have another form.
  • FIG. 1A schematically illustrates a manual sanding device in accordance with an embodiment of the present invention.
  • Fig. IB schematically illustrates the manual sanding device shown in Fig. 1A, with the sanding surface visible.
  • Manual sander 10 is shown in an unlocked configuration.
  • Manual sander 10 includes abrasion base 12.
  • abrasion base 12 is in the form of a disk with a fixed section 16 and two foldable sections 18.
  • an abrasion base may include a single foldable section, or three or more foldable sections.
  • Fixed section 16 includes fixed abrasion surface 22.
  • Each foldable section 18 includes a foldable abrasion surface 24.
  • fixed abrasion surface 22 and foldable abrasion surfaces 24 are coplanar, so as to function as a single flat abrasion surface 13.
  • flat abrasion surface 13 is circular.
  • abrasion base 12 and flat abrasion surface 13 may have other shapes (e.g., rectangular, polygonal, oval, or another shape).
  • Fixed abrasion surface 22 and each foldable abrasion surface 24 may be at least partially covered with a hook-and-loop fastener surface.
  • the hook-and-loop fastener surface may enable attachment of a piece of sandpaper or other abrasive material (whose rear surface is similarly provided with a cooperating hook-and-loop fastener surface) to fixed abrasion surface 22 and foldable abrasion surfaces 24.
  • a disk-shaped piece of sandpaper may be attached to a circular flat abrasion surface 13, as in the example shown.
  • each shaped to cover fixed abrasion surface 22 or foldable abrasion surface 24 may be attached to the correspondingly shaped fixed abrasion surface 22 or foldable abrasion surface 24.
  • fixed abrasion surface 22 and foldable abrasion surface 24 may be provided with other structure for holding a piece of sandpaper.
  • part or all of one or both of fixed abrasion surface 22 or foldable abrasion surface 24 may be covered with an adhesive coating.
  • abrasion base 12 may include one or more clips, straps, suction cups, or other structure for holding a piece of sandpaper to flat abrasion surface 13.
  • Each foldable section 18 of abrasion base 12 is connected to fixed section 16 at a hinge 20.
  • Each hinge 20 enables its connected foldable section 18 to fold in at least one direction relative to fixed section 16.
  • hinge 20 includes a linear groove in a piece of plastic from which abrasion base 12 is formed (e.g., by a molding or machining process).
  • hinge 20 in the form of a groove may have a V-shaped cross section.
  • the V- shape of the cross section of the groove may be configured to enable inward folding (toward sander handle 11, and away from foldable abrasion surface 24) of the connected foldable section 18 toward fixed section 16 (e.g., so as to close the walls of the groove inward to close the V-shape).
  • the extent of inward folding may be limited by the shape of the groove, by grip 14, or both.
  • Hinge 20 in the form of a groove may also enable outward folding of foldable section 18, such that fixed abrasion surface 22 and foldable abrasion surface 24 form a concave surface (e.g., for smoothing a convex surface such as a cylindrical, spherical, spheroid, exterior corner between two flat sides, or other convex surface).
  • hinge 20 may include another type of jointed or flexible structure that connects foldable section 18 to fixed section 16.
  • the jointed or flexible structure may be mechanically attached (e.g., using an adhesive, welding, soldering, screws, bolts, rivets, or otherwise) to foldable section 18, fixed section 16, or both.
  • Manual sander 10 includes handle 11. Handle 11 includes grip 14 and handle base 21. In the example shown, grip 14 is shorter than handle base 21. In other examples, grip 14 and handle base 21 may have substantially similar length.
  • Handle 11 may be configured to facilitate grasping and manipulation of manual sander 10.
  • grip 14 may be shaped in a manner (e.g., an arched shape, as shown, or another shape) that facilitates firm and comfortable grasping of handle 11.
  • Grip 14 may include surfaces that are covered with a non-slip material that facilitates gripping of handle 11.
  • grip 14 may include side panels 19 and one or more finger grooves 17.
  • One or more side panels 19 and finger grooves 17 may be covered or coated with a non-slip material.
  • Handle 11 may be configured so as to facilitate grasping and manipulation of manual sander 10 when manual sander 10 is in different configurations.
  • handle 11 in the open configuration (e.g., as shown in Figs. 1A, IB and 2A), handle 11 may be grasped primarily using side panels 19 of grip 14.
  • handle 11 When manual sander 10 is in a folded configuration (e.g., as shown in Figs. 2C), handle 11 may be grasped primarily using finger grooves 17 of grip 14.
  • Handle 11 may include an extension handle socket 33, shown covered by socket cap 34.
  • Extension handle socket 33 may be configured to attach to an end of an extension handle.
  • extension handle socket 33 may include internal threading, projections, sockets, or other structure to enable firm attachment of an extension handle to extension handle socket 33.
  • An extension handle (e.g., eccentric extension handle 40, as shown in Fig. 3) may be ergonomically designed for convenient handling of manual sander 10.
  • an extension handle may enable manipulation of manual sander 10 when holding grip 14 by hand is difficult, inconvenient, or not possible.
  • an extension handle may be used to manipulate manual sander 10 to smooth a work surface that would otherwise be inaccessible (e.g., more distant than the length of the user's arm, recessed within a narrow space or cavity, around a corner, or otherwise inaccessible when handheld).
  • An extension handle may be telescoping or bendable in order to facilitate access to the work surface.
  • Manual sander 10 may include one or more structures to facilitate storage of manual sander 10.
  • manual sander 10 may include hanger 32 to enable hanging on a hook or peg.
  • hanger 32 may be foldable inward when manual sander 10 is in use so as to reduce or eliminate interference with manipulation of manual sander 10.
  • hanger 32 may engage hanger latch 31 (visible in Figs. 2A and 2B) to retain hanger 32 in its folded state.
  • hanger 32 may be slidable or retractable into an appropriate cavity of manual sander 10.
  • other structure to enable storage of manual sander 10 may be included.
  • Such other storage structure may include one or more hooks, magnets, holes, or other structure to facilitate storage.
  • Handle 11 may be manipulated to lock manual sander 10 in an open configuration (where fixed abrasion surface 22 and foldable abrasion surfaces 24 are substantially coplanar), or to enable inward folding of one or more foldable sections 18.
  • handle 11 may be rotated about handle axis 15.
  • Handle axis 15 may enable lateral rotation (e.g., parallel to fixed abrasion surface 22) of handle 11 relative to fixed section 16 of abrasion base 12.
  • handle 11 is oriented so as not to impede inward folding of either foldable section 18 about its connected hinge 20.
  • part of handle base 21 of handle 11 may extend beyond hinge 20.
  • the part of handle base 21 that extends beyond hinge 20 may impede or prevent inward folding of either foldable section 18 about its connected hinge 20.
  • handle 11 may be laterally rotated in a forward direction (clockwise in the example shown) in order to lock abrasion base 12 in an open configuration.
  • Forward lateral rotation of handle 11 about handle axis 15 when foldable sections 18 are unfolded may cause locking structure in the form of a locking indentation 30 at an end (along the longitudinal axis) of handle base 21 of handle 11 to engage cooperating locking structure in the form of locking tab 28 on foldable section 18.
  • locking indentation 30 includes an indentation at either end of handle base 21 and each foldable section 18 includes a locking tab 28.
  • locking structure and cooperating structure may be used.
  • the locking structure may include a tab and the cooperating structure may include a latch or indentation.
  • the locking structure, cooperating structure, or both, may include a magnet, a latch, or other type of structure.
  • locking indentation 30 engages locking tab 28, inward folding of foldable section 18 about hinge 20 may be prevented.
  • locking indentation 30, locking tab 28, or both may be elastic (e.g., made of a resilient plastic that may temporarily distort or bend when subjected to a force), spring loaded, or otherwise resiliently bendable or distortable such that exertion of torque (e.g., in the clockwise direction in the example shown) will locking tab 28 to insert into locking indentation 30.
  • the elasticity or resilience may prevent locking tab 28 from disengaging from locking indentation 30 in the absence of exertion of an opposite (e.g., counterclockwise) torque.
  • handle 11, foldable section 18, or both may have other structure that may operate to impede or prevent inward folding of foldable section 18.
  • locking tab 28 may also prevent outward folding of foldable section 18 about hinge 20.
  • locking tab 28 may be shaped (e.g., with an enlarged distal end, or otherwise) such that engagement of locking indentation 30 by locking tab 28 does not allow locking tab 28 to slide relative to locking indentation 30.
  • friction between locking indentation 30 and locking tab 28 may prevent sliding of locking tab 28 relative to locking indentation 30.
  • locking structure on the handle may be configured to engage cooperating structure on fixed section 16.
  • the locking structure on the handle may be located at a part of the handle that is proximal to the ends of the handle, e.g., near a rotation axis of the handle.
  • Retaining structure may be provided to retain abrasion base 12 in a folded configuration.
  • handle 11, e.g., grip 14 of handle 11 may include handle retaining structure 26.
  • handle retaining structure 26 When a foldable section 18 is folded inward toward handle 11, handle retaining structure 26 may engage foldable section retaining structure 29. Foldable section retaining structure 29 may be located on a locking tab 28, or elsewhere on foldable section 18.
  • handle retaining structure 26 and foldable section retaining structure 29 may include a magnet, while the other includes a ferromagnetic plate, tab, or other structure.
  • both handle retaining structure 26 and foldable section retaining structure 29 may include magnets (e.g., with appropriate polarity to enable retention).
  • handle retaining structure 26 and foldable section retaining structure 29 may include cooperating mechanical retaining structure (e.g., male and female parts of a snap connector, a latch and structure that may be engaged by the latch, hook-and-loop fastener surfaces, adhesive surfaces, or other mechanical retaining structure).
  • a handle may be configured to be moved or slid translationally in order to prevent inward folding of foldable sections 18.
  • an end of a translatable handle may be configured in the form of a wedge that may be inserted into cooperating structure (e.g., a wedge-like slot or indentation) on one or more foldable sections.
  • Locking structure may be provided to prevent unintended sliding away from the configuration that prevents inward folding of foldable sections 18.
  • FIG. 2A schematically illustrates the manual sanding device shown in Fig. 1A when locked in an open configuration.
  • a longitudinal axis of handle 11 (e.g., the longitudinal axis of handle 11 representing an axis along the longest lateral dimension of handle 11, e.g., extending between both locking structures 30 on handle 11) is oriented substantially perpendicular to (the folding axis of each of) hinges 20.
  • the length of handle base 21 of handle 11 extends beyond the width of fixed section 16 of abrasion base 12 to cover the width of each foldable section 18.
  • handle base 21 overlaps each foldable section 18 and prevents inward folding of foldable section 18 about its connected hinge 20.
  • the length of handle base 21 is sufficiently close to the radius of abrasion base 12 so as to cover most of the width of each foldable section 18.
  • locking indentation 30 on handle base 21 of handle 11 may engage locking tab 28 of foldable section 18.
  • the orientation of handle 11 relative to abrasion base 12 may be locked.
  • engagement of locking tab 28 by locking indentation 30 may prevent further forward lateral rotation of handle 11 (e.g., clockwise in the example shown) relative to abrasion base 12 beyond the locked orientation.
  • Engagement of locking tab 28 by locking indentation 30 may impede or prevent unintentional backward lateral rotation of handle 11 away from the locked orientation (e.g., counterclockwise in the example shown).
  • backward lateral rotation of handle 11 may require deliberate application of torque to handle 11 relative to abrasion base 12. In order to enable the backward rotation of handle 11, the applied torque may be sufficient so as to disengage locking indentation 30 from locking tab 28.
  • handle 11 is rotated to the locking angle when the longitudinal axis of handle 11 is oriented substantially perpendicular to hinge 20.
  • Locking indentation 30 is located on either end of handle base 21, and locking tab 28 is located at the furthermost edge of foldable section 18 from its hinge 20 (e.g., as measured by perpendicular distance from hinge 20).
  • locking structure on handle 11 may be configured to engage structure (e.g., similar to locking tab 28) on foldable section 18 when the longitudinal axis of handle 11 is oriented at a non-perpendicular oblique angle to hinge 20.
  • the rotation of handle 11 to the oblique locking angle may be require rotation of handle 11 through an angle that is less than 90° (an acute angle), or through an angle that is greater than 90° (an obtuse angle).
  • fixed abrasion surface 22 and foldable abrasion surfaces 24 form a substantially coplanar and contiguous flat abrasion surface 13.
  • the area of the contiguous flat abrasion surface 13 may enable efficient smoothing of a flat (or gently curving) work surface.
  • the full area of a disk-shaped piece of sandpaper that is attached to flat abrasion surface 13 may be exposed as a single contiguous surface.
  • a user may grasp grip 14 of handle 11 (e.g., by one or more of side panels 19 and finger grooves 17, or otherwise) and manipulate manual sander 10 to smooth a work surface. Engagement of locking tabs 28 by locking indentation 30 may impede or prevent unintentional folding of foldable sections 18.
  • manual sander 10 may be unlocked from the open configuration to enable inward folding of one or foldable sections 18.
  • FIG. 2B schematically illustrates the unlocking of the manual sanding device shown in Fig. 1A.
  • handle 11 has been laterally rotated backward (e.g., counterclockwise in the example shown) to disengage each locking indentation 30 from its corresponding locking tab 28.
  • a backward torque may have been applied to handle 11 relative to abrasion base 12. Since the ends of handle base 21 if handle 11 continue to extend beyond each hinge 20 to its attached foldable section 18, inward folding of foldable section 18 is impeded.
  • FIG. 2C schematically illustrates the manual sanding device shown in Fig. IB when folded.
  • foldable section 18b is partially folded inward about hinge 20b.
  • foldable abrasion surface 24b is not coplanar with fixed abrasion surface 22.
  • Continued inward folding of foldable section 18b about hinge 20b, e.g., until foldable section 18 is completely folded inward toward handle 11, may bring foldable section retaining structure 29 adjacent to handle retaining structure 26.
  • Foldable section retaining structure 29 may then engage handle retaining structure 26 to retain foldable section 18b in a fully folded configuration.
  • Retaining foldable section 18b in a fully folded configuration may facilitate use of manual sander 10 in a fully folded configuration.
  • foldable section 18a is fully folded inward about hinge 20a such that foldable abrasion surface 24a is substantially perpendicular to fixed abrasion surface 22.
  • foldable section retaining structure 29 of foldable section 18a may be engaged by the corresponding handle retaining structure 26 on handle 11.
  • Fixed abrasion surface 22 together with foldable abrasion surfaces 24a and 24b form a convexly bent abrasion surface 13'.
  • one or both of foldable abrasion surfaces 24a and 24b may be folded outward to form a concavely bent abrasion surface, or bent partly concavely (e.g., at one hinge 20) and partly convexly (e.g., at another hinge 20).
  • manual sander 10 may be used to smooth work surfaces at a corner.
  • hinge 20a may be inserted into a corner where two substantially perpendicular work surfaces, e.g., two walls of a room or of another enclosure, meet.
  • Application of pressure to manual sander 10 while moving manual sander 10 parallel to hinge 20a within the corner may concurrently smooth the sections of both of the work surfaces where they meet at the corner.
  • socket cap 34 may be opened and an extension handle may be inserted into the exposed extension handle socket 33.
  • structure on the extension handle e.g., one or more of external threading, tabs, sockets, or other structure
  • cooperating structure e.g., internal threading, sockets, tabs, or other cooperating structure
  • the extension handle may then be used to manipulate manual sander 10 in a folded configuration.
  • handle 11 of manual sander 10 may be grasped (e.g., at finger grooves 17 on grip 14, or elsewhere) in order to manipulate manual sander 10 in a folded configuration.
  • FIG. 3 schematically illustrates an extension handle for the manual sanding device shown in Fig. 1A.
  • Eccentric extension handle 40 includes eccentric knob 42.
  • Eccentric knob 42 is asymmetrically distributed about the point of attachment, e.g., attachment stem 46, of eccentric extension handle 40 to extension handle socket 33.
  • Eccentric extension handle 40 may be configured to enable a user of manual sander 10 to select an orientation of eccentric extension handle 40 relative to handle 11 and grip 14. For example, the user may select the handle on the basis of, comfort, the position of work surface to be smoothed, handedness of the user, or otherwise. Thus, eccentric extension handle 40 may enable ergonomic gripping and manipulation of manual sander 10.
  • Eccentric extension handle 40 may be disassembled into a knob section 41 that includes eccentric knob 42 and attachment stem 46, and a knob cover 44.
  • Knob cover 44 may be attached to knob section 41 to form eccentric extension handle 40.
  • knob section 41 and knob cover 44 may be made of plastic and separately formed by a molding process, or otherwise. In some cases, eccentric handle 40 may be made a single integral part.
  • Attachment stem 46 may be inserted into extension handle socket 33 of handle 11.
  • the outer diameter or other outer dimension of attachment stem 46 may be selected to be approximately equal to the inner diameter, or other corresponding dimension, of extension handle socket 33.
  • a pushing force may be applied to attachment stem 46 in order to insert attachment stem 46 into extension handle socket 33.
  • friction forces may prevent unintentional withdrawal of attachment stem 46 from extension handle socket 33 until a pulling force is applied to withdraw attachment stem 46 from extension handle socket 33.
  • Attachment stem 46 and extension handle socket 33 may be provided with guiding structure.
  • guiding structure on attachment stem 46 may include a plurality of stem grooves 47 that are oriented longitudinally along (e.g., substantially parallel to an axis of) attachment stem 46. Stem grooves 47 may be distributed approximately uniformly around the diameter of attachment stem 46, or may be otherwise distributed.
  • Extension handle socket 33 may include guiding structure in the form of one or more socket tabs 48.
  • extension handle socket 33 may include two socket tabs 48 one opposite sides of extension handle socket 33. Each socket tab 48 is configured with a size, orientation, and shape to engage (e.g., insert into) a stem groove 47 of attachment stem 46 when attachment stem 46 is inserted into extension handle socket 33.
  • extension handle socket 33 may include a plurality of distributed socket tabs 48 while attachment stem 46 includes one or more stem grooves 47.
  • attachment stem 46 may be provided with one or more tabs while extension handle socket 33 is provided with one or more grooves.
  • Other guiding structure e.g., attachment stem 46 and extension handle socket 33 having corresponding polygonal cross sections, or other guiding structure may be provided.
  • the guiding structure may limit the orientation of eccentric extension handle 40 relative to handle 11 to a limited number of orientations.
  • the guiding structure may maintain an orientation of eccentric extension handle 40 relative to extension handle socket 33 and handle 11 during use of manual sander 10 by preventing unintentional rotation of eccentric extension handle 40 relative to handle 11 and manual sander 10.
  • the guiding structure may increase friction between attachment stem 46 and extension handle socket 33 so as to further prevent unintentional withdrawal of attachment stem 46 from extension handle socket 33.
  • FIG. 4 schematically illustrates components for assembly into the manual sanding device shown in Fig. 1A.
  • Socket cap 34 may be inserted into extension handle socket 33 of grip 14 when no extension handle is inserted into extension handle socket 33. Insertion of socket cap 34 into extension handle socket 33 may facilitate comfortable gripping of grip 14 when no extension handle. For example, when socket cap 34 is inserted into extension handle socket 33, a user who is gripping grip 14 may feel a smooth surface, rather than an opening that may chafe or otherwise cause discomfort to the user.
  • each handle retaining structure 26 may include a ferromagnetic plate (e.g., made of stainless steel or another ferromagnetic material) that is inserted into and held by a plate slot 27 on grip 14.
  • Each handle retaining structure 26 may include a magnet that may be inserted into each magnet socket 49 and into each locking tab 28 in each foldable section 18 of abrasion base 12.
  • Flat abrasion surface 13 may be covered with (e.g., with an appropriate glue or other adhesive) with sandpaper attachment surface 50.
  • Sandpaper attachment surface 50 may enable attachment of sandpaper or another type of sheet-like abrasive material to flat abrasion surface 13.
  • sandpaper attachment surface 50 may include a surface of a hook-and-loop fastener that is configured to attach to a cooperating hook-and-loop fastener on the sandpaper.
  • the sandpaper may include a typical commercially available sandpaper disk for attachment to a disk sander. The rear surface of such a sandpaper disk may be covered with a loop surface of the hook-and-loop fastener.
  • a front surface of sandpaper attachment surface 50 (e.g., the surface that is configured to face the work surface and away from abrasion base 12) may be covered with a hook surface of the hook-and-loop fastener.
  • Sandpaper attachment surface 50 may include a single piece that is shaped (circular in the example shown, or otherwise shaped) to cover substantially all of flat abrasion surface 13.
  • sandpaper attachment surface 50 may include separate sections that are each shaped to cover part of flat abrasion surface 13.
  • central sheet section 52 of sandpaper attachment surface 50 may be shaped so as to cover fixed abrasion surface 22.
  • each end sheet section 54 of sandpaper attachment surface 50 may be shaped to cover a foldable abrasion surface 24.
  • a sandpaper attachment surface 50 may be otherwise divided into sections.
  • a user may execute a method for preparing manual sander 10 for use.
  • Fig. 5A schematically illustrates a side view of attaching a piece of sandpaper to the manual sander shown in Fig. 2A when in an open configuration.
  • handle 11 When preparing to smooth a flat work surface 64 or gently curving work surface 66 (e.g., a convex work surface as shown, or, in some cases, a concave work surface with a radius of curvature that is much larger than the diameter of flat abrasion surface 13), handle 11 (represented by grip 14) may be manipulated to the open configuration shown in Fig. 2A.
  • Sandpaper 60 e.g., a sandpaper disk or otherwise shaped piece of sandpaper
  • Manual sander 10 may then be manipulated (e.g., by gripping grip 14 or otherwise) to sand flat work surface 64 or gently curving work surface 66.
  • the work surface may include a concavely bent work surface, such as an inside corner along an inside edge where two flat or gently curved surfaces meet.
  • Fig. 5B schematically illustrates a folded configuration of the manual sander for smoothing an inside corner.
  • handle 11 When a concavely bent work surface is to be smoothed, such as inside corner surface 68, handle 11 may be manipulated to enable foldable abrasion surface 24 to fold about hinge 20, with sandpaper 60 attached, to form a folded configuration in which fixed abrasion surface 22 and foldable abrasion surfaces 24 form a convexly bent abrasion surface 13'.
  • Manual sander 10 with convexly bent abrasion surface 13' may then be manipulated to smooth inside corner surface 68.
  • inside corner surface 68 is in the form of a right angle.
  • handle retaining structure 26 and foldable section retaining structure 29 may retain bent abrasion surface 13' so as to form a right angle.
  • the sides that meet to form an inside corner surface may meet at an obtuse angle.
  • a foldable section 18 may be partially folded inward (e.g., similar to foldable section 18b in Fig. 2C).
  • sandpaper 60 may be placed on the work surface prior to attachment to bent abrasion surface 13'.
  • the front surface (e.g., the abrasive surface) of a piece of sandpaper may be inserted into inside corner surface 68, or placed over a convexly bent or curved surface.
  • An appropriately shaped abrasion surface of manual sander 10 may then be pressed onto the rear side of the piece of sandpaper to attach the piece of sandpaper to the abrasion surface (e.g., via a hook-and- loop fastener, an adhesive, or otherwise, and in a manner similar to attachment of outwardly bent abrasion surface 13" to sandpaper 60 as described below).
  • FIG. 5C schematically illustrates preparation of the manual sander shown in Fig. 1A for smoothing an outer corner.
  • outside corner surface 70 forms a right angle. In other cases, outside corner surface 70 may form an acute or obtuse angle.
  • Sandpaper 60 may be placed over outside corner surface 70, with the front (abrasive) side of sandpaper 60 facing outside corner surface 70.
  • Manual sander 10 may be moved toward sandpaper 60 with sander attachment motion 72. Concurrently, one or more of foldable sections 18 may be folded outwardly from manual sander 10 with outward folding 73 to form an outwardly bent abrasion surface 13" whose contour substantially matches the form of sandpaper 60 on outside corner surface 70. In this manner, outwardly bent abrasion surface 13" may attach to sandpaper 60.
  • sandpaper 60 is not appreciably elastic (e.g., cannot be stretched to an extent that would be detectible by the unaided eye). Therefore, if the bond between sandpaper 60 and outwardly bent abrasion surface 13" is sufficiently strong, sandpaper 60 may function to preserve the form of outwardly bent abrasion surface 13".
  • Fig. 5D schematically illustrates preparation of the manual sander shown in Fig. 1A for smoothing a convexly curved surface.
  • convexly curved surface 74 is circular
  • convexly curved surface 74 may be elliptical or otherwise curved, or may be in the form of a corrugation.
  • Sandpaper 60 may be placed over convexly curved surface 74, with the front side of sandpaper 60 facing convexly curved surface 74.
  • Manual sander 10 may be moved toward sandpaper 60 with sander attachment motion 76. Concurrently, one or more of foldable sections 18 may be folded outwardly from manual sander 10 with outward folding 77 to form an outwardly bent abrasion surface 13" whose contour substantially matches (e.g., partially circumscribes) the form of sandpaper 60 on convexly curved surface 74 (e.g., at lines or points where outwardly bent abrasion surface 13" is tangent to sandpaper 60 on convexly curved surface 74). In this manner, outwardly bent abrasion surface 13" may attach to sandpaper 60. Typically, when sandpaper 60 is not appreciably elastic and the bond between sandpaper 60 and outwardly bent abrasion surface 13" is sufficiently strong, sandpaper 60 may function to preserve the form of outwardly bent abrasion surface 13".

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

Ponceuse manuelle comprenant une poignée et une surface d'abrasion fixe à laquelle la poignée est fixée. Au moins une surface d'abrasion pliable est reliée à la surface d'abrasion fixe par une charnière. La poignée peut être manipulée pour maintenir la surface d'abrasion fixe et les surfaces d'abrasion pliables dans une configuration ouverte dans laquelle la surface d'abrasion fixe et les surfaces d'abrasion pliables sont sensiblement coplanaires. La poignée peut également être manipulée pour permettre à la surface d'abrasion pliable de se plier autour de la charnière pour former une configuration pliée dans laquelle la surface d'abrasion fixe et la surface d'abrasion pliable forment une surface courbée.
PCT/IL2017/050541 2016-12-23 2017-05-16 Ponceuse manuelle WO2018116288A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA3048159A CA3048159A1 (fr) 2016-12-23 2017-05-16 Ponceuse manuelle
US16/471,646 US20200094378A1 (en) 2016-12-23 2017-05-16 Manual sander
EP17885294.3A EP3558585A4 (fr) 2016-12-23 2017-05-16 Ponceuse manuelle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662498369P 2016-12-23 2016-12-23
US62/498,369 2016-12-23

Publications (1)

Publication Number Publication Date
WO2018116288A1 true WO2018116288A1 (fr) 2018-06-28

Family

ID=62626021

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2017/050541 WO2018116288A1 (fr) 2016-12-23 2017-05-16 Ponceuse manuelle

Country Status (4)

Country Link
US (1) US20200094378A1 (fr)
EP (1) EP3558585A4 (fr)
CA (1) CA3048159A1 (fr)
WO (1) WO2018116288A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220258307A1 (en) * 2021-02-16 2022-08-18 Allway Tools, Inc. Sander clamping mechanism

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11052424B1 (en) * 2020-01-02 2021-07-06 Lynette Weisbarth Paint trencher
US10875141B1 (en) * 2020-01-02 2020-12-29 Lynette Weisbarth Paint trencher
DE102020123372B4 (de) 2020-05-27 2022-02-24 Andrzej Sosnowski Vorrichtung zur manuellen Schleifbearbeitung von Wandflächen und Verwendung
EP4163055B1 (fr) * 2021-10-07 2024-03-20 Stanley Black & Decker MEA FZE Ponceuse portable réglable
WO2024151805A1 (fr) * 2023-01-12 2024-07-18 Marshalltown Company Tête de ponceuse pliable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2213859A1 (fr) 1997-08-25 1999-02-25 Michael Lepofsky Dispositif de papier de verre pour coins
US20070037494A1 (en) * 2005-08-11 2007-02-15 Cybulski Eric R Sanding tool with rotatable handle
US20070212989A1 (en) * 2006-03-10 2007-09-13 Warner Manufacturing Company Sander tool with pivoting handle and attachable pole
CN204771904U (zh) * 2015-05-19 2015-11-18 傅联群 新型墙体打磨器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663979A (en) * 1952-03-24 1953-12-29 Sierchio Gerardo Sanding block
US2680334A (en) * 1953-09-29 1954-06-08 Hardware Products Company Holder for sandpaper and the like
US4202139A (en) * 1978-04-06 1980-05-13 Minnesota Mining And Manufacturing Company Conformable hand sanding pad
US5544384A (en) * 1995-02-13 1996-08-13 Forselius; Frank E. Wall corner finishing tool
JP4301350B2 (ja) * 1999-06-02 2009-07-22 上垣 健男 研磨具
US7485031B1 (en) * 2005-07-27 2009-02-03 Drywall Ideas, Llc Angle sander
US8365340B2 (en) * 2007-11-07 2013-02-05 Gary Alan Barstad Multipurpose tool with moveably arranged plates
FR2994663A1 (fr) * 2012-08-27 2014-02-28 All Trends Kit adaptateur de surfaces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2213859A1 (fr) 1997-08-25 1999-02-25 Michael Lepofsky Dispositif de papier de verre pour coins
US20070037494A1 (en) * 2005-08-11 2007-02-15 Cybulski Eric R Sanding tool with rotatable handle
US20070212989A1 (en) * 2006-03-10 2007-09-13 Warner Manufacturing Company Sander tool with pivoting handle and attachable pole
CN204771904U (zh) * 2015-05-19 2015-11-18 傅联群 新型墙体打磨器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3558585A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220258307A1 (en) * 2021-02-16 2022-08-18 Allway Tools, Inc. Sander clamping mechanism

Also Published As

Publication number Publication date
US20200094378A1 (en) 2020-03-26
EP3558585A1 (fr) 2019-10-30
CA3048159A1 (fr) 2018-06-28
EP3558585A4 (fr) 2020-08-19

Similar Documents

Publication Publication Date Title
US20200094378A1 (en) Manual sander
US10470540B2 (en) Covering, protecting, and positioning a portable electronic device
US9655434B2 (en) Holder for mobile computing device
JP4455945B2 (ja) クランプオン延長ハンドルを有する手で保持できるモータ付き掃除道具および掃除道具を形成する方法
US7354293B2 (en) Fastening positioning device for a handle of a power supply
US20130105662A1 (en) Easily Attachable/Detachable, Multi-Function Support For A Tablet Personal Computer
US10130162B2 (en) Gear strap
JPS61226079A (ja) カツタ
US20100088899A1 (en) Carabiner with folding utility knife
US20150342328A1 (en) Ring Tool Holder
JP2014522679A (ja) フラットワイパ及び該フラットワイパ用の支持板
US11234567B2 (en) Vacuum cleaner tool having a rotatable duct for moving between a use position and storage position on a vacuum cleaner
US20120297575A1 (en) Handle for Tablet Computers
JP6121747B2 (ja) 掛止め具
TW201932041A (zh) 可移除式把手結構
US5361497A (en) Folding knife holder and method for one-handed opening of a folding knife
CN106468296B (zh) 滑动扣接结构及滑动扣接结构组合件
JP2024502958A (ja) ウェアラブルシステム
GB2487402A (en) Scissors with retainer
JPS5828771Y2 (ja) ステップル着脱具
TWI292686B (fr)
EP1868771A1 (fr) Mecanisme de demontage rapide d'outil a main
US20150014375A1 (en) Survey swing

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17885294

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 3048159

Country of ref document: CA

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2017885294

Country of ref document: EP

Effective date: 20190723