US3921276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Debris ejecting means for pierce nut applying tool
Assignee: MacLean Fogg Lock Nut Co
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Filing: 1974-09-16
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Granted: 1975-11-25
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Expires: 1994-09-16
Abstract
Abstract A tool for applying flanged pierce nuts to a workpiece panel by forcing the pilot portion of the nut through a workpiece supported on an underlying apertured die, the pilot portion cutting a slug from the workpiece which is then discharged through the die aperture. The tool is particularly featured by a housing in which the punch reciprocates in line with a first opening through which successive pierce nuts are moved by the punch to the workpiece. Additional side openings communicate with lateral portions of the first opening normally occupied by the nut flanges. Cam means are provided in the housing adjacent the intersections of the nut passage and side openings for ejecting nut debris, comprising material and flanges deformed and severed from preceding nuts, through the side openings in response to movements of the tool toward the die. This prevents the buildup of such debris within the nut passage opening and protects the housing against bursting forces.
Inventors
- 👤 Daniel V Oaks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:59
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/04; F16B37/06; F16B37/062; F16B37/068; B; B23; B23P; B23P19/00; B23P19/04; B23P19/06; B23P19/062; B25; B25B; B25B27/00; B25B27/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/53; Y10T29/5343
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
An application tool for punching the pilot portion of a flanged pierce nut through a workpiece by forcing the nut and workpiece against a supporting die, comprising: a housing, a punch reciprocable in the housing for engaging a nut therein and forcing its pilot portion through an underdisposed workpiece, the housing having a first opening aligned with the punch for guiding and affording passage of successive flanged nuts to a workpiece, said opening being susceptible to the accumulation of nut debris generated by preceding operations of the tool, said housing also having a side opening therethrough openly communicating laterally with said first opening, and means on said housing for positively ejecting said debris through said side opening to prevent the accumulation thereof in said first opening.
Claim 2
Dependent Claim
126 words
An application tool for punching the pilot portion of a flanged pierce nut through a workpiece by forcing the nut and workpiece against a supporting die, comprising: a housing, a punch reciprocable in the housing for engaging a nut therein and forcing its pilot portion through an underdisposed workpiece, the housing having a first opening aligned with the punch for guiding and affording passage of successive flanged nuts to a workpiece, said opening being susceptible to the accumulation of nut debris generated by preceding operations of the tool, said housing also having a side opening therethrough openly communicating laterally with said first opening, and means on said housing for positively ejecting said debris through said side opening to prevent the accumulation thereof in said first opening.
Claim 3
Dependent Claim
52 words
The tool of claim 1, wherein said means on said housing comprises an inclined camming surface disposed to engage said debris and positively direct the same laterally out of the housing through said side opening in response to forces imposed on the debris by operative movements of the tool toward the die.
Claim 4
Dependent Claim
19 words
The tool of claim 1, wherein said side opening communicates with a flange guiding portion of said first opening.
Claim 5
Dependent Claim
65 words
The tool of claim 1, wherein said punch has a cross-sectional contour substantially the same as the contour of the nut to be contacted thereby, the said first opening having a cross-sectional shape substantially the same as the cross-sectional contour of the punch and through which opening said punch reciprocates, and said means on the housing being located outside the shape defining said first opening.
Claim 6
Dependent Claim
48 words
The tool of claim 4, wherein said means on said housing comprises a camming surface located within the housing adapted to be engaged by the debris and angularly disposed relative to the direction of movement of the punch for operatively ejecting the debris laterally through said side opening.
Claim 7
Dependent Claim
71 words
The tool of claim 1, and portions of said debris being compacted against the die in the direction of movement of the punch by the force of the punch and thereby spread laterally of said direction, and said means on the housing acting upon said laterally spread debris to eject the same out of the housing through said side opening in response to operative movement of the tool toward said die.
Claim 8
Dependent Claim
65 words
The tool of claim 6, said debris being comprised of flanges broken from pierce nuts operated upon by the tool and portions of the nuts cut from the sides thereof said portions cut from the sides being adhered to the flanges, and said means on the housing contacting the portions cut from the sides and ejecting said portions and said adhered flanges from the tool.
Claim 9
Dependent Claim
28 words
The tool of claim 6 and means extending into the first opening from at least one side thereof to engage and guide a nut past said side opening.
Claim 10
Dependent Claim
30 words
The tool of claim 6, and a bead extending from a side of the first opening in the tool to cut into and guide a nut past said side opening.
References Cited (Backward Citations)
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US3693237A
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US3775833A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |