Patent US5085545A successfully refreshed from Google Patents.
US5085545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible rivet for securing together overlapped panels
Assignee: Nifco Inc
•
Filing: 1990-07-31
•
Granted: 1992-02-04
•
Expires: 2010-07-31
Abstract
Abstract An expansible rivet for securing together overlapped panels comprises a female member having a plurality of elastic legs defined by a corresponding number of axially elongate notches and a male member having a body portion having axially elongate fins slidably received in the axially elongate notches and a conical free end portion. The fins serve to permit stable coupling of the two members. The conical end portion facilitates the insertion of the male member into the female member.
Inventors
- 👤 Atsushi Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:47
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/04; F16B19/08; F16B19/10; F16B19/1027
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
332 words
An expansible rivet for securing together overlapped panels comprising; a female member including a flange having a hole and a plurality of elastic legs extending from the lower surface of said flange surrounding said hole and defined by axially formed elongated notches, each of said elastic legs having a radially inward protuberance formed at a respective lower end; and a male member including a head having an outside diameter dimensioned to fit in the opening of said flange and a body portion extending from a lower surface of said head and capable of proceeding through said hole in said flange and a space surrounded by said plurality of elastic legs, said body portion having an intermediate raised portion of lesser diameter than said outside diameter of the head and recessed portions formed thereover and thereunder, the protuberances of said elastic legs engaging with said raised portion when a top of said head is substantially flush with a top of said flange and being received in one of said recessed portions otherwise; said body portion of said male member including a plurality of axially elongate fins extending radially from the axis so as to be slidably received in the axially elongate notches between adjacent elastic legs, said raised portion and said recessed portions thereover and thereunder being formed between adjacent ones of said fins, said recessed portion under said raised portion terminating in a conical end portion having a pointed free end and having a diameter substantially equal to the diameter of said head and larger than said lesser diameter of said intermediate raised portion, said fins axially extending along said body portion of said male member including said recessed portion formed over and under said raised portion and radially extending to substantially the same diameter as the diameter of said conical end portion, said conical end portion supporting said protuberances of said elastic legs when said protuberances of said elastic legs are received in the lower recessed portion of the body portion.
Claim 2
Dependent Claim
332 words
An expansible rivet for securing together overlapped panels comprising; a female member including a flange having a hole and a plurality of elastic legs extending from the lower surface of said flange surrounding said hole and defined by axially formed elongated notches, each of said elastic legs having a radially inward protuberance formed at a respective lower end; and a male member including a head having an outside diameter dimensioned to fit in the opening of said flange and a body portion extending from a lower surface of said head and capable of proceeding through said hole in said flange and a space surrounded by said plurality of elastic legs, said body portion having an intermediate raised portion of lesser diameter than said outside diameter of the head and recessed portions formed thereover and thereunder, the protuberances of said elastic legs engaging with said raised portion when a top of said head is substantially flush with a top of said flange and being received in one of said recessed portions otherwise; said body portion of said male member including a plurality of axially elongate fins extending radially from the axis so as to be slidably received in the axially elongate notches between adjacent elastic legs, said raised portion and said recessed portions thereover and thereunder being formed between adjacent ones of said fins, said recessed portion under said raised portion terminating in a conical end portion having a pointed free end and having a diameter substantially equal to the diameter of said head and larger than said lesser diameter of said intermediate raised portion, said fins axially extending along said body portion of said male member including said recessed portion formed over and under said raised portion and radially extending to substantially the same diameter as the diameter of said conical end portion, said conical end portion supporting said protuberances of said elastic legs when said protuberances of said elastic legs are received in the lower recessed portion of the body portion.
Claim 3
Dependent Claim
25 words
The expansible rivet according to claim 1, wherein said female member has four elastic legs, and said male member has an equal number of fins.
Claim 4
Dependent Claim
35 words
The expansible rivet according to claim 1, wherein the largest diameter of said conical end portion of said male member is equal to the diameter of said hole in said flange of said female member.
Claim 5
Dependent Claim
29 words
The expansible rivet according to claim 1, wherein said elastic legs of the female member are four in number and arranged in a pattern having a square cross-sectional configuration.
Claim 6
Dependent Claim
49 words
The expansible rivet according to claim 1, wherein a part of the inside diameter of the space which is surrounded by said plurality of elastic legs and which communicates with the hole of said flange is substantially equal to the outside diameter of said head of said male member.
References Cited (Backward Citations)
US2159580A
Cited
US3105407A
Cited
US3205759A
Cited
US3147525A
Cited
US3188905A
Cited
US3202038A
Cited
US3385158A
Cited
JPS4813144B1
Cited
DE2462604A1
Cited
US4276806A
Cited
US4216697A
Cited
JPS55120818A
Cited
US4637765A
Cited
US4840523A
Cited
US4927287A
Cited
US4952106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |