Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
197 words
A spherical-thread spindle nut bearing at least one singletransfer insert piece, comprising a spherical-thread spindle nut, a spindle, a nut housing surrounding said spindle, two adjacent thread starts having thread flanks, at least one single-transfer insert piece disposed between said thread flanks, balls adapted to travel in threads along bearing lines in the direction of rotation of a nut and said spindle, said bearing lines, receiving the load in the direction of rotation in the thread of said nut, being interrupted in the range of the transfer of said balls into and out of, respectively, said single-transfer insert piece by each of a bevel and perpendicular respectively, forming a place of discontinuity, said balls, upon leaving and reentering, respectively, into said bearing lines, rest at predetermined first points simultaneously on perpendicular guide path wall parts, at predetermined second points each, and seat themselves in the guide path bottom, extending perpendicularly to said guide path wall part, at each of predetermined third points, and said perpendicular guide path wall part of said single-transfer insert piece being bent parallel to said bearing lines, the latter being free of points of discontinuity at the sides opposite said points of discontinuity.
Claim 2
Dependent Claim
197 words
A spherical-thread spindle nut bearing at least one singletransfer insert piece, comprising a spherical-thread spindle nut, a spindle, a nut housing surrounding said spindle, two adjacent thread starts having thread flanks, at least one single-transfer insert piece disposed between said thread flanks, balls adapted to travel in threads along bearing lines in the direction of rotation of a nut and said spindle, said bearing lines, receiving the load in the direction of rotation in the thread of said nut, being interrupted in the range of the transfer of said balls into and out of, respectively, said single-transfer insert piece by each of a bevel and perpendicular respectively, forming a place of discontinuity, said balls, upon leaving and reentering, respectively, into said bearing lines, rest at predetermined first points simultaneously on perpendicular guide path wall parts, at predetermined second points each, and seat themselves in the guide path bottom, extending perpendicularly to said guide path wall part, at each of predetermined third points, and said perpendicular guide path wall part of said single-transfer insert piece being bent parallel to said bearing lines, the latter being free of points of discontinuity at the sides opposite said points of discontinuity.
Claim 3
Dependent Claim
43 words
The spherical-thread spindle nut, as set forth in claim 1, wherein said single-transfer insert piece comprises a cylindrical insert piece inserted in a bore of said housing and secured in position merely by bonding precisely in the center between two adjacent thread profiles.
Claim 4
Dependent Claim
54 words
The spherical-thread spindle nut, as set forth in claim 1, wherein the bottom curve of said ball guide path defines a circular arc, so that the inlet and outlet conditions are fulfilled with respect to the simultaneous engagement of said balls on the bearing point in the thread profile and in said bottom curve.
Claim 5
Dependent Claim
87 words
The spherical-thread spindle nut, as set forth in claim 1, wherein the bottom curve comprises a rib extending merely over a part of the width of the bottom, to fulfill the inlet and outlet conditions of the simultaneous engagement of said balls at said bearing point in said thread profile and in the bottom of said guide path, the bottom of said single-transfer insert piece having a groove and being now flat and extending in tangential direction and said rib being received and held in said groove.