Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A worm drive including a cylindrical worm and a worm gear, having arcuated corresponding engaging tooth flank profiles, with a mesh line in the engaging region, the improvement comprising the flanks of the teeth of the worm each consisting of at least two flank parts engaging with the flanks of the worm gear teeth; one flank part, in the axial section through the worm, having a profile inclined relative to a perpendicular to the worm axis and at least approximating a straight line; the other flank part, in the axial section through the worm, having a sharply curved profile; said mesh line reversing in the region of engagement between the flanks of the worm teeth and the flanks of the worm gear teeth.
Claim 2
Dependent Claim
123 words
A worm drive including a cylindrical worm and a worm gear, having arcuated corresponding engaging tooth flank profiles, with a mesh line in the engaging region, the improvement comprising the flanks of the teeth of the worm each consisting of at least two flank parts engaging with the flanks of the worm gear teeth; one flank part, in the axial section through the worm, having a profile inclined relative to a perpendicular to the worm axis and at least approximating a straight line; the other flank part, in the axial section through the worm, having a sharply curved profile; said mesh line reversing in the region of engagement between the flanks of the worm teeth and the flanks of the worm gear teeth.
Claim 3
Dependent Claim
23 words
In a worm drive, the improvement claimed in claim 1, in which the profile of said one flank part is a straight line.
Claim 4
Dependent Claim
22 words
In a worm drive, the improvement claimed in claim 1, in which the profile of said one flank part is slightly convex.
Claim 5
Dependent Claim
22 words
In a worm drive, the improvement claimed in claim 1, in which the profile of said one Flank part is slightly concave.
Claim 6
Dependent Claim
25 words
In a worm drive, the improvement claimed in claim 1, in which the profile of the other flank part is convex toward said worm gear.
Claim 7
Dependent Claim
25 words
In a worm drive, the improvement claimed in claim 1, in which the profile of said other flank part is concave toward said worm gear.
Claim 8
Dependent Claim
62 words
In a worm drive, the improvement claimed in claim 1, in which the profile of the flank of the worm teeth, in the axial section through the worm, comprises a convex flank part sharply curved toward said worm gear, a concave flank part sharply curved toward said worm gear, and a substantially straight flank part interconnecting said convex and concave flank parts.
Claim 9
Dependent Claim
44 words
In a worm drive, the improvement claimed in claim 1, in which the profile of the flank of the worm gear teeth, in the axial section through the worm, comprises a single curve having one part sharply curved and the other part slightly curved.
Claim 10
Dependent Claim
23 words
In a worm drive, the improvement claimed in claim 8, in which the flank of the worm tooth constitutes part of an ellipse.
Claim 11
Dependent Claim
23 words
In a worm drive, the improvement claimed in claim 8, in which the flank of the worm tooth constitutes part of a parabola.
Claim 12
Dependent Claim
23 words
In a worm drive, the improvement claimed in claim 8, in which the flank of the worm tooth constitutes part of an hyperbola.