US20050221738A1 - Orbital sander with vertical handle - Google Patents

Abstract

An orbital sander having a housing defining an axis. A motor and output with a sanding element are aligned on said axis. The housing includes a power source as well as an activating member to energize and de-energize the sander. A handle is spaced from the housing and is substantially parallel to the axis. Further, additional gripping members may be positioned on the housing to provide multiple gripping surfaces.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
• This application is a continuation-in-part of application Ser. No. 10/819,248, filed Apr. 6, 2004. This application is incorporated herein by reference.
FIELD OF THE INVENTION
• The present invention relates to sanders and, more particularly, to random orbital sanders having multiple gripping members, including a spaced vertical handle.
BACKGROUND OF THE INVENTION
• Orbital sanders generally include a vertically orientated housing having a handle at an axial end of the housing. Thus, the handle is positioned above the orbital sanding element so that a workman applies force directly onto the orbital sanding element. These handles have various types of designs in order to accommodate the workman's hand. Also, orbital sanders exist which include handles which extend from the housing substantially perpendicular to the orbital sander housing. These types of handles are in a horizontal orientation. Thus, during use, for a significant period of time, vibration can cause the user's hand to become fatigue. Accordingly, it is desirable to have an orbital sander which enables the user various gripping orientations to overcome the shortcoming of the prior art.
• The present invention provides the art with a orbital sander that provides multiple gripping positions. The orbital sander provides the user with a gripping surface spaced from the housing and substantially parallel to the housing. Also, the present invention provides the user with a gripping portion which surrounds the housing to provide a 360 degree handle for various orientations of the orbital sander. Also, the present invention provides the user with a palm grip having a gel portion to reduce vibration in the tool. The present invention also enables the user to utilize both hands at various positions on the sander during operation.
SUMMARY OF THE INVENTION
• According to a first aspect of the invention, an orbital sander comprises a housing with an overall axial orientation. A motor is positioned within the housing. An output is coupled with the motor to drive the orbital sanding element. A power source is coupled with the motor. An activation member is coupled with the motor and the power source. The activation member energizes and de-energizes the motor which, in turn, randomly rotates the output and sanding element. A handle having an overall vertical orientation is spaced from the housing. The housing ordinarily has a cylindrical portion and a truncated conical portion adjacent the cylindrical portion. A gripping member is positioned at the intersection of the cylindrical portion and a truncated conical portion. The gripping member surrounds a portion of the housing. The gripping member that surrounds the housing is formed from an elastomeric material providing comfort and feel for the user. Also, a gripping member maybe positioned on an end of the housing opposing the output. This gripping member may include a gel portion.
• According to a second aspect of the invention, an orbital sander comprises a housing that has an overall axial orientation with two ends. A motor is positioned within the housing. An output, coupled with the motor, is positioned at one of the ends of the housing to drive a sanding element. A power source is coupled with the motor. An activation member is coupled with the motor and the power source to energize and de-energize the motor which, in turn, drives the output and the sanding element. A gripping member surrounds the housing. The gripping member is positioned between the ends of the housing. The gripping member is elastomeric to provide comfort and feel. The gripping member is continuous 360 degrees around the housing. The gripping member has an annular portion and an extending tail portion. The gripping member is positioned on a truncated conical portion of the housing.
• According to a third aspect of the present invention, an orbital sander comprises a housing having an axial orientation with a pair of ends. A motor is positioned within the housing. An output, coupled with the motor, is positioned at one of the end to drive a sanding element. A power source is coupled with the motor. An activation member is coupled with the motor and the power source to energize and de-energize the motor which, in turn, drives the output and the sanding element. A plurality of gripping members are coupled with the housing. At least one gripping member is spaced from and positioned substantially parallel to the housing. The one gripping member is a handle. The others of the gripping members are on the housing. One of the gripping members surrounds a portion of the housing. One of the gripping members is positioned on the end of the housing opposing the output.
• From the following detailed description taken in conjunction with the accompanying drawings and subjoined claims, other objects and advantages of the present invention will become apparent to those skilled in the art.
BRIEF DESCRIPTION OF THE DRAWINGS
• The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
• FIG. 1 is a perspective view of an orbital sander in accordance with the present invention;
• FIG. 2a-2eare side perspective views ofFIG. 1 with hands shown in phantom for gripping the sander;
• FIG. 3ais a side view of the present orbital sander showing its dimensions in millimeters;
• FIG. 3bis a bottom view of the present orbital sander showing its dimensions in millimeters;
• FIG. 4ais a side view of a second embodiment of the orbital sander having a rectangular sanding element, with dimensions shown in millimeters; and
• FIG. 4bis a bottom view of the second embodiment of the orbital sander, with dimensions shown in millimeters.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
• The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
• The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
• Turning to the figures, an orbital sander is illustrated and designated with thereference numeral10. The orbital sander includes ahousing12, amotor14 positioned within the housing, anoutput16 driven by themotor14, and a platen orcarrier18 that is coupled to the output and oscillatingly driven. A sanding element (not shown) is attached to thecarrier18. It should be understood that a polishing or other similar element, other than a sanding element, may be attached tocarrier18 and still be within the scope of the invention.
• Adust collection system20 is coupled with thehousing12. Also, a plurality of grippingmembers22,24, and26 are coupled with the housing. AnAC power cord28 is coupled with the housing to provide power to themotor14. Anactivation member30 is coupled with the housing to energize and de-energize themotor14, in turn, theoutput16 which, in turn, rotates thecarrier18.
• Thehousing12 defines acentral axis13 and is normally used in a vertical orientation. Thehousing12 includes acylindrical portion32 and a truncatedconical portion34 positioned onaxis13. The truncatedconical portion34 at its end includes askirt36. Theskirt36 provides durability and protects the work surface while sanding.
• Ahousing gripping member22 is positioned at the intersection of thecylindrical portion32 and the truncatedconical portion34. Thehousing gripping member22 includes an annular portion comprising agripping surface40 and atail surface42. The grippingsurface40 surrounds the housing providing a 360 degree grip on the housing. The grippingsurface40 is positioned at the other end of the truncatedconical portion34 wherein it intersects thecylindrical portion32. Thetail surface42 extends from the grippingsurface40 towards theskirt36. Thehousing gripping member22 is an elastomeric member and may be over molded onto thehousing12. The elastomeric member provides a comfortable grip as well as increased feel to the user.
• The other end of thehousing12 includes an upper grippingmember24. The extending end of thecylindrical portion32 has a teardrop shapedhead44 with the upper grippingmember24 positioned on top of thehead44. The upper grippingmember24 has a teardrop shape and is formed from a gel material that forms an upper gripping surface. Thus, the gel provides a top surface to absorb vibration of the sander to increase the duration of use by the user without fatigue.
• Vertical axis13 is located substantially centrally relative to thesander housing12 throughout its entire extent. That is,axis13 is centrally located with respect to all of upper grippingmember24,cylindrical portion32 andconical portion34. Further, as evident with reference toFIGS. 3aand3c, upper grippingmember24 defines an outer perimeter such that a downward projection of the outer perimeter defines a volume in which thehousing12 is substantially disposed within throughout its entire extent. In other words, the middle and lower parts ofhousing12 do not extend outwardly of upper grippingmember24 for any substantial extent.
• Ahandle gripping member26 is spaced from thehousing12. Thehandle gripping member26 runs substantially parallel to thehousing12, and has a vertical orientation enabling the user to grip handle grippingmember26 to provide a different orientation for the user's hands. The gripping orientations are illustrated inFIGS. 2a-2e. Also, the user may use two hands when gripping thehandle gripping member26 with another one of the grippingmembers22 or24.
• Thehandle gripping member26 is ordinarily formed with thehousing12 to provide a clamshell type of housing member. Thehandle gripping member26 includes grippingsurface46 and48 on each of its sides. The gripping surfaces46 and48 are similar to grippingsurface40, and made of an elastomeric material to provide comfort and feel to the user.
• An open space is formed betweengripping surfaces46,48 andhousing12 to allow for gripping of the gripping surfaces, with the user's hand oriented in a substantially vertical orientation, as explained below.
• During operation, a user may grip the orbital sander at grippingmember22,24 or26. This allows the user to vary his hand positions to reduce fatigue during prolonged operation. Also, the user may use a plurality of the gripping members at one time. The user may usegrips22 and26,24 and26, or22 and24 at one time to add increased control to the sander during operation.
• Although as discussed above, the sander may be gripped with two hands utilizing various combinations ofgrips22,24 and26, the preferred overall configurations and weight allow for the sander to be operated by the user with one hand by solely grippingupper grip24. As shown inFIG. 2a, in this sole gripping position, the user's hand may extend substantially over the entire extent of thesander housing12. In such a configuration, the user's palm rests substantially in a horizontal plane. One advantage provided by this invention is that in addition to allowing for such overhanded gripping at the top of the sander, the user also can grip the sander with his second hand gripping spacedhandle26. In particular, as shown inFIG. 2b, the user grips grippingsurfaces46 and48 ofhandle26 such that the palm of the second hand is disposed substantially vertically and therefore perpendicular to the palm of the first hand, to provide increased control during operation.
• With reference toFIG. 3a, preferred dimensions in millimeters for the sander are shown. In a preferred embodiment, the weight of the orbital sander may be approximately 3.5 pounds. As shown, thehandle26 need not be disposed precisely perpendicular to the gripping surface ofupper grip24, that is, it need not be disposed precisely vertical. For example, in one preferred embodiment handle26 and thus grippingsurfaces46 and48 may be disposed substantially vertically at 103.46° to the horizontal gripping surface ofupper grip24, and thus at an angle of 13.46° to the vertical axis ofhousing12. Prefereably, this angle may be varied within a range of 5°.
• FIGS. 4aand4bshow a second embodiment of the invention, where thecarrier18, and consequently the sanding element (not shown), is rectangular shaped. The orbital sander shown inFIGS. 4aand4bis a ¼ sheet sander, with the approximate dimension of the sander shown in millimeters.
• The description of the invention is merely exemplary in nature and, thus, variations that do not depart from the gist of the invention are intended to be within the scope of the invention. Such variations are not to be regarded as a departure from the spirit and scope of the invention.

Claims (28)

1. A sander having multiple gripping members, comprising:

a housing having a top portion, a middle portion and a bottom portion, and the middle portion and the bottom portion having substantially the same central vertical axis;

a sanding element located at a bottom portion of the housing;

a first gripping member comprising a handle spaced apart from the housing and being substantially parallel to the housing;

a second gripping member located generally at the bottom portion of the housing, the second gripping member extending around the housing and having a smoothly outwardly curved shape.

2. The sander ofclaim 1, wherein:

the middle portion of the housing is generally a cylindrical portion and the bottom portion of the housing is a truncated conical portion.

3. The sander ofclaim 1, wherein:

the spacing of the handle from the housing allows a user's hand to easily fit through the space between the handle and the housing to grip the middle portion or the bottom portion of the housing, and the housing is shaped to allow for easy gripping with a single hand.

4. The sander ofclaim 1, further comprising:

a third gripping member located at the top portion of the housing and having a gel-like material thereon for creating a comfortable gripping surface for the user.

5. The sander ofclaim 4, wherein:

the third gripping surface is generally tear-drop shaped.

6. The sander ofclaim 1, further comprising:

a dust collection system located at the bottom of the handle and a power cord located at the top of the handle.

7. A sander having multiple gripping members, comprising:

a housing having a cylindrical portion and a truncated conical portion, the cylindrical portion and the truncated conical portion concentrically spaced around a vertical axis of the housing with the truncated conical portion extending downwardly from the cylindrical portion;

the truncated conical portion including a skirt and a carrier element;

a first gripping member including a handle spaced from the housing and oriented substantially parallel to the vertical axis of the housing, the first gripping member having first gripping surfaces thereon; and

a second gripping member located substantially on the truncated conical portion and having a curved second gripping surface.

8. The sander ofclaim 7 wherein:

the spacing of the handle from the housing allows a user's hand to easily fit through the space between the handle and the housing to grip the cylindrical portion or the truncated conical portion of the housing, and the housing is shaped to allow for easy gripping with a single hand.

9. The sander ofclaim 7, further comprising:

a third gripping member extending above the cylindrical portion and having a gel-like material thereon creating a third gripping surface.

10. The sander ofclaim 9, wherein:

the third gripping surface is generally tear-drop shaped.

11. The sander ofclaim 7, further comprising:

a dust collection system located at the bottom of the handle and a power cord located at the top of the handle.

12. A sander having multiple gripping members, comprising:

a housing having a top portion, a middle portion and a bottom portion, and a vertical axis with at least the middle portion and the bottom portion having the same vertical axis;

a handle gripping member spaced apart from the housing and being substantially parallel to the axis;

a housing gripping member located substantially on the bottom portion of the housing; and

a top gripping member located substantially at the top portion of the housing and having a cushioning material thereon for creating a comfortable gripping surface.

13. The sander ofclaim 12, wherein:

the handle gripping member is spaced from the housing to allow a user's hand to easily fit through the space between the handle gripping member and the housing to grip the housing gripping member, and the housing gripping member is sized to allow for easy gripping with a single hand.

14. A power driven oscillating tool comprising:

a housing, said housing having a longitudinal axis which is situated substantially centrally of said housing for substantially the entire vertical extent of said housing, said housing having an upper gripping surface;

a motor disposed in said housing;

a carried disposed below said housing and driven to oscillate by said motor;

a side gripping surface displaced from said housing so as to form an open space between said side gripping surface and said housing.

15. The tool ofclaim 14, wherein the side gripping surface has a longitudinal axis which extends substantially vertically.

16. The tool ofclaim 14, wherein the side gripping surface has a longitudinal axis which makes an angle with the longitudinal axis of the housing within a range of 8.46° to 18.46°.

17. The tool ofclaim 16, wherein said angle is substantially equal to 13.46 degrees.

18. The tool ofclaim 14, wherein said carrier comprises a sanding platen and is driven in an orbiting motion by said motor.

19. The tool ofclaim 14, wherein said housing includes a cylindrical portion extending downwardly from said upper gripping surface and a truncated conical portion extending downwardly from said cylindrical portion, said truncated conical portion providing a lower gripping surface of said housing.

20. A power driven oscillating tool comprising:

a housing having an upper gripping member and a main body portion extending downwardly from said upper gripping member, said upper gripping member defining an outer perimeter, a downward projection of said outer perimeter defining a volume such that said housing is disposed throughout substantially the entire extent of said housing substantially entirely within the defined volume.

a motor disposed in said housing;

a carrier disposed below said housing and driven to oscillate by said motor; and

a side gripping surface displaced from said housing so as to form an open space between said side gripping surface and said housing.

21. The tool ofclaim 20, wherein said side gripping surface has a longitudinal axis which extends substantially vertically.

22. The tool recited inclaim 20, wherein said housing has a longitudinal axis, said side gripping surface has a longitudinal axis which makes an angle with said longitudinal axis of said housing in a range of 8.46° to 18.45°.

23. The tool recited inclaim 22, wherein said angle is substantially equal to 13.46°.

24. The tool recited inclaim 20, wherein said housing includes a cylindrical portion extending downwardly from said upper gripping member and a truncated conical portion extending downwardly from said cylindrical portion, said truncated conical portion having an outer perimeter which is substantially coincident with the outer perimeter of said upper gripping member.

25. The tool recited inclaim 20, wherein said carrier comprises a sanding platen and is driven in an orbiting motion by said motor.

26. A power sander comprising:

a housing having an upper gripping member, said sander configured so as to allow for one-handed operation in normal use by gripping the upper gripping member;

a motor disposed in said housing;

a platen disposed below said housing and driven to oscillate by said motor; and

a side gripping surface displaced from said housing so as to form an open space between said side gripping surface and said housing.

27. The sander recited inclaim 26, wherein said platen is substantially circular and said outer perimeter of the housing below said upper gripping member has substantially circular outer perimeter, wherein said housing has a maximum diameter which is no greater than 122 mm and said sander has a maximum weight of 3.5 pounds.

28. The sander recited inclaim 26, wherein said platen is substantially rectangular and the outer perimeter of the housing below said upper gripping member has a substantially rectangular outer perimeter, wherein said housing has a maximum cross-sectional area which is no greater than 12,140 mm²and said sander has a maximum weight of 3.5 pounds.

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