US3687349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Riveting apparatus
Assignee: Individual
•
Filing: 1970-11-18
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Granted: 1972-08-29
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Expires: 1990-11-18
Abstract
Abstract Apparatus for riveting unperforated layers of material supported on a counter-holder. The counter-holder has a recess for receiving the rivet shank such that the cross section of the recess in the area in which the closing head is formed is larger than the cross section of the rivet shank, and the depth of the recess is shorter than the portion of the rivet shank protruding from the layers.
Inventors
- 👤 Erich Doring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:52
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/36; B21J15/02; B21J15/025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
A riveting apparatus comprising a. means for driving a rivet shank of solid material having a first head through a plurality of unperforated layers of material, said means including a punch, b. a counter-holder including a cantilever and a supporting surface on the top thereof for supporting the layers, a recess in the cantilever for receiving the rivet shank, and a bottom member below the cantilever, c. the cross-section of the recess, in the lower area thereof being larger than the cross-section of the rivet shank, d. the depth from the supporting surface to the bottom of the recess being shorter than the length of the rivet shank protruding beyond the layers, e. the cross-section of the recess in the area of the supporting surface being larger than the cross-section of the rivet shank, f. means for keeping the bottom of the recess immobile during the riveting operation, g. means for driving the rivet shank after perforation of the layers of material to the bottom of the recess for forming a second head of the rivet shank and h. means for effecting the perforation of the layers and the forming of the second head in one and the same moving operation.
Claim 2
Dependent Claim
201 words
A riveting apparatus comprising a. means for driving a rivet shank of solid material having a first head through a plurality of unperforated layers of material, said means including a punch, b. a counter-holder including a cantilever and a supporting surface on the top thereof for supporting the layers, a recess in the cantilever for receiving the rivet shank, and a bottom member below the cantilever, c. the cross-section of the recess, in the lower area thereof being larger than the cross-section of the rivet shank, d. the depth from the supporting surface to the bottom of the recess being shorter than the length of the rivet shank protruding beyond the layers, e. the cross-section of the recess in the area of the supporting surface being larger than the cross-section of the rivet shank, f. means for keeping the bottom of the recess immobile during the riveting operation, g. means for driving the rivet shank after perforation of the layers of material to the bottom of the recess for forming a second head of the rivet shank and h. means for effecting the perforation of the layers and the forming of the second head in one and the same moving operation.
Claim 3
Dependent Claim
31 words
A riveting apparatus according to claim 1, wherein the cross-section of the recess within the area of the supporting surface is equal to the maximum cross section of the second head.
Claim 4
Dependent Claim
25 words
A riveting apparatus according to claim 1 wherein the recess is of frustoconical configuration, the smaller diameter being in the area of the supporting surface.
Claim 5
Dependent Claim
41 words
A riveting apparatus according to claim 1, wherein in the area of the supporting surface the cross-section of the recess is smaller than the largest cross-section of the second head, the counter-holder being longitudinally divided in the area of the recess.
Claim 6
Dependent Claim
21 words
A riveting apparatus according to claim 1, wherein the counter-holder is a one piece structure, and the bottom is laterally removable.
Claim 7
Dependent Claim
16 words
A riveting apparatus according to claim 4, wherein the divided counter-holder has a longitudinally removable bottom.
References Cited (Backward Citations)
US360178A
Cited
US1698922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |