Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
273 words
In a screw lock rivet for use in adjustably securing a riveted member to a sheet metal companion member having an adjustment slot and an opening communicating with the adjustment slot for admitting a screw lock rivet head, the combination with said sheet metal companion member of a rivet head, a rivet shank integrally formed with and extending axially outwardly of the underside of said rivet head, said underside of said head being formed with a flange comprising a flat, transversely-extending portion and an axially outwardly-projecting arcuate ramp portion, said shank comprising a shank base portion extending into a cylindrical shank outer end portion of decreased cross-sectional size to define with said shank base portion a shoulder against which a member to be riveted to seats upon the riveting deformation of said shank outer end portion, the axial distance between the outward-most projection zone of said ramp portion and said shoulder being less than the thickness of the companion member to be riveted to, and tool engaging means at the outer end of said rivet head to facilitate turning of the lock screw rivet with respect to a companion member to be riveted to, said shank base portion being ovoid in transverse cross-sectional shape, the arcuate extent of said axially outwardly-projecting arcuate ramp portion being no greater than the maximum diameter of said shank portion, the major axis of said ovoid shank portion and the radial direction of said arcuate ramp portion lying along the same transverse diameter as that of said cylindrical shank outer end portion, said major axis having a length greater than the width of the companion member adjustment slot.
Claim 2
Dependent Claim
273 words
In a screw lock rivet for use in adjustably securing a riveted member to a sheet metal companion member having an adjustment slot and an opening communicating with the adjustment slot for admitting a screw lock rivet head, the combination with said sheet metal companion member of a rivet head, a rivet shank integrally formed with and extending axially outwardly of the underside of said rivet head, said underside of said head being formed with a flange comprising a flat, transversely-extending portion and an axially outwardly-projecting arcuate ramp portion, said shank comprising a shank base portion extending into a cylindrical shank outer end portion of decreased cross-sectional size to define with said shank base portion a shoulder against which a member to be riveted to seats upon the riveting deformation of said shank outer end portion, the axial distance between the outward-most projection zone of said ramp portion and said shoulder being less than the thickness of the companion member to be riveted to, and tool engaging means at the outer end of said rivet head to facilitate turning of the lock screw rivet with respect to a companion member to be riveted to, said shank base portion being ovoid in transverse cross-sectional shape, the arcuate extent of said axially outwardly-projecting arcuate ramp portion being no greater than the maximum diameter of said shank portion, the major axis of said ovoid shank portion and the radial direction of said arcuate ramp portion lying along the same transverse diameter as that of said cylindrical shank outer end portion, said major axis having a length greater than the width of the companion member adjustment slot.
Claim 3
Dependent Claim
25 words
A screw lock rivet as defined in claim 1 wherein said outwardly-projecting arcuate ramp portion comprises a pair of substantially identical, diametrically opposed ramp members.
Claim 4
Dependent Claim
19 words
A screw lock rivet as defined in claim 2 wherein said tool engaging means comprises a hexagonal nut portion.
Claim 5
Dependent Claim
29 words
A screw lock rivet as defined in claim 3 including means at the outer end of said rivet head for indicating the diametrical direction of said opposed ramp members.