Patent US2774010A successfully refreshed from Google Patents.
Patent US3750518A successfully refreshed from Google Patents.
US3750518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-drilling blind rivet
Assignee: Illinois Tool Works Inc
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Filing: 1972-06-07
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Granted: 1973-08-07
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Expires: 1992-06-07
Abstract
Abstract A self-drilling and blind-setting rivet assembly for power tool application to workpiece means, and including a hollow rivet sleeve with an outward radial head flange at the outer end thereof configured for a rotatable driving connection with a power tool and with the inner end portion thereof configured for engagement with cooperative means on an included shank with a drilling head at the inner end thereof whereby torque is transmitted through the rivet sleeve to the drilling head at the end of the shank for causing the drilling head to penetrate the workpiece means in locating the rivet sleeve, and the shank having an area of weakness in rear of the drilling head for fracture thereof upon withdrawal of the shank to collapse and blind set the rivet sleeve in position securing together the workpice means.
Inventors
- 👤 C Rayburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/04; F16B19/08; F16B19/083
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
187 words
A self-drilling and blind-setting rivet assembly adapted for power tool application to workpiece means; and comprising a hollow rivet sleeve with an outward radial head flange at the outer end thereof and said head flange having clutch surface means adapted for cooperative engagement with torque transmitting means of a power tool to impart rotation to the sleeve, a shank extending through said sleeve with a drilling tip at the inner end thereof presenting an outward shoulder proximate to the inner end of said sleeve and said shank including an intermediate transversely weakened section for ultimate fracture, and means providing an interengaged rotatable drive connection between the sleeve and the shank for imparting rotation to the shank and drilling tip from the head flange through the sleeve without torque transmission loading through the weakened section, whereby to effect penetration of the workpiece means by rotation of the drilling tip and positioning of the rivet sleeve relative thereto for subsequent withdrawal of the shank to effect blind setting collapse of the rivet sleeve in opposition to the head flange and fractural separation of the shank at the weakened section.
Claim 2
Dependent Claim
187 words
A self-drilling and blind-setting rivet assembly adapted for power tool application to workpiece means; and comprising a hollow rivet sleeve with an outward radial head flange at the outer end thereof and said head flange having clutch surface means adapted for cooperative engagement with torque transmitting means of a power tool to impart rotation to the sleeve, a shank extending through said sleeve with a drilling tip at the inner end thereof presenting an outward shoulder proximate to the inner end of said sleeve and said shank including an intermediate transversely weakened section for ultimate fracture, and means providing an interengaged rotatable drive connection between the sleeve and the shank for imparting rotation to the shank and drilling tip from the head flange through the sleeve without torque transmission loading through the weakened section, whereby to effect penetration of the workpiece means by rotation of the drilling tip and positioning of the rivet sleeve relative thereto for subsequent withdrawal of the shank to effect blind setting collapse of the rivet sleeve in opposition to the head flange and fractural separation of the shank at the weakened section.
Claim 3
Dependent Claim
23 words
A rivet assembly as claimed in claim 1, wherein the weakened section comprises recess means located in the vicinity of said drive connection.
Claim 4
Dependent Claim
31 words
A rivet assembly as claimed in claim 1, wherein the drive connection comprises mutually interengaged longitudinal rib and recess means between the inner end portion of the sleeve and the shank.
Claim 5
Dependent Claim
37 words
A rivet assembly as claimed in claim 3, wherein the said rib and recess means are located between the weakened section and the drilling tip for rotation of the shank without torque transmission through the weakened section.
Claim 6
Dependent Claim
20 words
A rivet assembly as claimed in claim 4, wherein the clutch surface means comprises radial notches on the head flange.
Claim 7
Dependent Claim
48 words
A rivet assembly as claimed in claim 1, wherein the drive connection comprises ribs projecting along the shank from said shoulder and complemental recesses on the inner end portion of the sleeve, with the weakened section closely adjacent to the ribs toward the outer end of the shank.
Claim 8
Dependent Claim
16 words
A rivet assembly as claimed in claim 6, wherein the weakened section comprises peripheral groove means.
Claim 9
Dependent Claim
32 words
A rivet assembly as claimed in claim 7, wherein the shoulder and adjacent end of the sleeve are positioned for permissive abutment upon withdrawal of the shank in collapsing the rivet sleeve.
Claim 10
Dependent Claim
25 words
A rivet assembly as claimed in claim 8, wherein the clutch surface means comprises radial notch means on the exposed surface of the head flange.
References Cited (Backward Citations)
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Cited
US2406157A
Cited
US2435144A
Cited
US3085463A
Cited
US3197987A
Cited
FR1525224A
Cited
US3453927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |