US3724738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rivet setting apparatus
Assignee: Illinois Tool Works Inc
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Filing: 1970-08-19
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Granted: 1973-04-03
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Expires: 1990-08-19
Abstract
Abstract The present invention relates generally to improvements in apparatus and methods for driving and setting a work piercing fastener rivet, and more particularly to simplified and very practical apparatus and methods for driving and setting rivets of the type comprising a shank expanding pin member associated with a headed rivet shank having an expandable entering extremity. The embodiment of the invention disclosed herein includes an elongate shiftable driving tool for causing a rivet to pierce a workpiece. A longitudinal chamber within the tool communicates at one extremity with a pin accommodating aperture. Abutment means spaced axially from said aperture is adapted to engage a pin driving member freely shiftable longitudinally within the chamber. Kinetic energy resulting from sudden interruption of the driving movement of the tool upon complete insertion of the rivet member within the workpiece serves to cause the rivet expanding pin to move forwardly and expand the entering extremity of the rivet member.
Inventors
- 👤 T Hurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:46
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/02; B21J15/04; B21J15/041; B21J15/025; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49835; Y10T29/49837; Y10T29/49908; Y10T29/49915; Y10T29/49938; Y10T29/49943; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53726
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
184 words
Apparatus for driving and setting a work piercing fastener rivet of the type comprising a shank expanding pin member associated with a headed rivet shank having an expandable entering extremity, an elongate rivet driving tool, means for axially advancing the driving tool, said driving tool having a longitudinal chamber communicating at the driving extremity thereof with a pin accommodating aperture, abutment means in said chamber spaced axially from said aperture, an annular rivet engaging surface extending radially outwardly from said aperture, and a pin driving member freely shiftable longitudinally within said chamber between said abutment means and said aperture, the driving extremity of said pin driving member being adapted for telescopic association with said aperture and driving engagement with the end of a shank expanding pin member associated with said aperture, said rivet driving tool and means for advancing said tool including complementary abutment means for limiting the advancing movement of the tool when the rivet shank has been fully driven into a workpiece, wherein the freely shiftable pin driving member continues to advance to drive the shank expanding pin into the rivet shank.
Claim 2
Dependent Claim
184 words
Apparatus for driving and setting a work piercing fastener rivet of the type comprising a shank expanding pin member associated with a headed rivet shank having an expandable entering extremity, an elongate rivet driving tool, means for axially advancing the driving tool, said driving tool having a longitudinal chamber communicating at the driving extremity thereof with a pin accommodating aperture, abutment means in said chamber spaced axially from said aperture, an annular rivet engaging surface extending radially outwardly from said aperture, and a pin driving member freely shiftable longitudinally within said chamber between said abutment means and said aperture, the driving extremity of said pin driving member being adapted for telescopic association with said aperture and driving engagement with the end of a shank expanding pin member associated with said aperture, said rivet driving tool and means for advancing said tool including complementary abutment means for limiting the advancing movement of the tool when the rivet shank has been fully driven into a workpiece, wherein the freely shiftable pin driving member continues to advance to drive the shank expanding pin into the rivet shank.
Claim 3
Dependent Claim
44 words
Apparatus for driving and setting a work piercing fastener rivet as set forth in claim 1, wherein the abutment means in said chamber spaced axially from the aperture is in the form of a wall surface traversing the inner extremity of the longitudinal chamber.
Claim 4
Dependent Claim
41 words
Apparatus for driving and setting a work piercing fastener rivet as set forth in claim 1, wherein the chamber is bounded at each extremity by abutment means for limiting the extent of reciprocable travel of the longitudinally shiftable pin driving member.
Claim 5
Dependent Claim
44 words
Apparatus for driving and setting a work piercing fastener rivet as set forth in claim 1, wherein the forward extremity of the pin driving member is provided with a pin engaging section of reduced diameter adapted to be received by the pin accommodating aperture.
Claim 6
Dependent Claim
80 words
Apparatus for driving and setting a work piercing fastener rivet as set forth in claim 1, wherein the elongate rivet driving tool includes an elongate cylindrical section having the chamber at the forward extremity thereof, and abutment means in the vicinity of the opposite extremity projecting outwardly from the periphery of said cylindrical section for engaging the complementary fixed abutment means in the means for advancing the driving means after an associated rivet has been completely inserted within a workpiece.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |