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US 5,584,755 AGranted
Abrasive wheel for hand-guided grinding machines, in particular abrasive cutting-off wheel
AssigneeAugust Ruggeberg GmbH & Co. KG
InventorsPeter Alfer, Diethard Sinram, Theodor Schneider
Life of this patent
Estimating the term…
Abstract
An abrasive wheel, in particular an abrasive cutting-off wheel, comprises an annular cylindrical inner support of metal and an abrasive ring surrounding the latter, both being connected with each other. The abrasive ring projects on both sides from the support in the direction of the common axis. The abrasive ring can be ground off completely. The support is re-usable or at least recyclable.
Claims49
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcement layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9") arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1);
- wherein said support (2") has a thickness (e) and said abrasive ring (1) has a thickness (a) and said thickness (e) of said support (2") is substantially less than said thickness (a) of said abrasive ring (1) and wherein, at its outer circumference, said support (2") is provided with an substantially annular cylindrical rim (24) having a length (b) in the direction of said central longitudinal axis (4), which length is greater than said thickness (e) of said support (2"), and wherein said outer circumferential surface (9") is provided on said rim (24) and wherein said abrasive ring (1) is secured to said outer circumferential surface (9');
- wherein said reinforcement layer (14, 14') has a central opening (19) and an outer circumference and comprises reinforcing threads (18) extending tangentially in the vicinity of said central opening (19) and radially tangentially towards said outer circumference and are deflected at said outer circumference to return to the vicinity of said central opening (19).
1 more element
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcement layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9") arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1);
- wherein said support (2") has a thickness (e) and said abrasive ring (1) has a thickness (a) and said thickness (e) of said support (2") is substantially less than said thickness (a) of said abrasive ring (1) and wherein, at its outer circumference, said support (2") is provided with an substantially annular cylindrical rim (24) having a length (b) in the direction of said central longitudinal axis (4), which length is greater than said thickness (e) of said support (2"), and wherein said outer circumferential surface (9") is provided on said rim (24) and wherein said abrasive ring (1) is secured to said outer circumferential surface (9');
- wherein said abrasive ring (1) has two front faces (5, 5') and wherein said support (2, 2', 2") has two front faces (6, 6') and wherein at least one of said two front faces (5, 5') of said abrasive ring (1) projects from one front face of said two front faces (6, 6') of the support (2, 2', 2").
1 more element
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcement layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9") arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1);
- said recess (3) having an inside diameter Di and said abrasive ring (1) having an outside diameter Da, wherein 1.4<Da/Di<2;
- wherein said abrasive ring (1) has two front faces (5, 5') and wherein said support (2, 2', 2") has two front faces (6, 6') and wherein at least one of said two front faces (5, 5') of said abrasive ring (1) projects from one front face of said two front faces (6, 6') of the support (2, 2', 2").
1 more element
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcement layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9') arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1),
- wherein said reinforcement layer (14, 14') has a central opening (19) and an outer circumference and comprises reinforcing threads (18) extending tangentially in the vicinity of said central opening (19) and radially tangentially towards said outer circumference and are deflected at said outer circumference to return to the vicinity of said central opening (19),
- wherein said reinforcing threads (18) partially spiral from said central opening (19) towards said outer circumference,
- said recess (3) having an inside diameter Dia and said abrasive ring (1) having an outside diameter Da, wherein 1.4<Da/Di<2.
2 more elements
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcing layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9') arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1),
- wherein said reinforcement layer (14, 14') has a central opening (19) and an outer circumference and comprises reinforcing threads (18) extending tangentially in the vicinity of said central opening (19) and radially tangentially towards said outer circumference and are deflected at said outer circumference to return to the vicinity of said central opening (19),
- wherein a thickness of the abrasive ring in a direction of the axis being in a range of 2.0 mm to 4.0 mm.
1 more element
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcement layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9') arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1),
- wherein said reinforcement layer (14, 14') has a central opening (19) and an outer circumference and comprises reinforcing threads (18) extending tangentially in the vicinity of said central opening (19) and radially tangentially towards said outer circumference and are deflected at said outer circumference to return to the vicinity of said central opening (19),
- wherein said reinforcing threads (18) partially spiral from said central opening (19) towards said outer circumference,
- wherein a thickness of the abrasive ring in a direction of the axis being in a range of 2.0 mm to 4.0 mm.
2 more elements
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcing layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9') arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1),
- wherein said reinforcement layer (14, 14') has a central opening (19) and an outer circumference and comprises reinforcing threads (18) extending tangentially in the vicinity of said central opening (19) and radially tangentially towards said outer circumference and are deflected at said outer circumference to return to the vicinity of said central opening (19),
- said recess (3) having an inside diameter Di and said abrasive ring (1) having an outside diameter Da, wherein 1.4<Da/Di<2,
- wherein a thickness of the abrasive ring in a direction of the axis being in a range of 2.0 mm to 4.0 mm.
2 more elements
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcement layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9') arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1),
- wherein said reinforcement layer (14, 14') has a central opening (19) and an outer circumference and comprises reinforcing threads (18) extending tangentially in the vicinity of said central opening (19) and radially tangentially towards said outer circumference and are deflected at said outer circumference to return to the vicinity of said central opening (19),
- wherein said reinforcing threads (18) partially spiral from said central opening (19) towards said outer circumference,
- said recess (3) having an inside diameter Di and said abrasive ring (1) having an outside diameter Da, wherein 1.4<Da/Di<2,
- wherein a thickness of the abrasive ring in a direction of the axis being in a range of 2.0 mm to 4.0 mm.
3 more elements
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcement layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9") arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1);
- wherein said support (2") has a thickness (e) and said abrasive ring (1) has a thickness (a) and said thickness (e) of said support (2") is substantially less than said thickness (a) of said abrasive ring (1) and wherein, at its outer circumference, said support (2") is provided with an substantially annular cylindrical rim (24) having a length (b) in the direction of said central longitudinal axis (4), which length is greater than said thickness (e) of said support (2"), and wherein said outer circumferential surface (9") is provided on said rim (24) and wherein said abrasive ring (1) is secured to said outer circumferential surface (9');
- wherein said reinforcement layer (14, 14') has a central opening (19) and an outer circumference and comprises reinforcing threads (18) extending tangentially in the vicinity of said central opening (19);
- wherein said reinforcing threads (18) extend tangentially and radially tangentially in a straight line.
2 more elements
An abrasive wheel for hand-guided grinding machines, comprising
- an abrasive ring (1) with abrasive grit (15), a synthetic resin bonding of said abrasive grit (15), at least one reinforcement layer (14, 14"), a central longitudinal axis (4), and a recess (3) formed concentrically of said central longitudinal axis (4) and defined by a circumferential surface (8) of the abrasive ring (1), and
- an annular-disk-type inner support (2, 2', 2") having an outer circumferential surface (9, 9") arranged in said recess (3) of said abrasive ring (1) and connected with said abrasive ring (1);
- wherein said support (2") has a thickness (e) and said abrasive ring (1) has a thickness (a) and said thickness (e) of said support (2") is substantially less than said thickness (a) of said abrasive ring (1) and wherein, at its outer circumference, said support (2") is provided with an substantially annular cylindrical rim (24) having a length (b) in the direction of said central longitudinal axis (4), which length is greater than said thickness (e) of said support (2"), and wherein said outer circumferential surface (9") is provided on said rim (24) and wherein said abrasive ring (1) is secured to said outer circumferential surface (9');
- wherein said reinforcement layer (14, 14') has a central opening (19) and an outer circumference and comprises reinforcing threads (18) extending tangentially in the vicinity of said central opening (19);
- wherein said reinforcing threads (18) spiral from said central opening (19) towards said outer circumference.
2 more elements
Dependencies are inferred from the claim text.