US3710674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable fastener
Assignee: METEOR RES Ltd
•
Filing: 1970-12-18
•
Granted: 1973-01-16
•
Expires: 1990-12-18
Abstract
Abstract A split, conically tapered spring steel sleeve to be inserted through aligned openings in adjacent members. A cylindrical pin is then pushed through the sleeve, which is held against axial movement by a flange at one end thereof, to expand the sleeve to cylindrical shape tightly fitting the openings. Detent means prevent inadvertent removal of the pin and an expendable pilot plug guides the sleeve through misaligned openings.
Inventors
- 👤 P Tabor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:12
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/02; F16B; F16B19/00; F16B19/04; F16B19/08; F16B19/10; F16B19/1027; F16B19/1036; F16B19/1081; F16C11/04; F16C11/045; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32951; Y10T403/32959; Y10T403/53; Y10T403/535
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
228 words
A pivot pin device for a clevis assembly comprising: a generally conically tapered resilient sleeve having only a single split therein and extending longitudinally thereof from end to end the remainder thereof being imperforate, the sides of which are spaced apart at the large diameter end and which converge uniformly toward each other throughout the length of the taper and in a direction toward the small diameter end; and a solid cylindrical pin of a diameter not less than the internal diameter of the large end of said sleeve, the inner surface of said tapered portion of said sleeve being without protuberances, the portion of said pin which is adapted to engage said tapered portion having a substantially constant diameter, whereby said pin may be forced into said sleeve to expand the same to cylindrical shape with said sleeve frictionally gripping said pin throughout its length, said sleeve being of spring steel whereby it will return to said generally conically tapered shape upon removal of said pin therefrom, said sleeve being provided with an outwardly extending peripheral flange at each end thereof, the flange at the small diameter end of said sleeve having an outer diameter no greater than the outer diameter of the other end of said tapered sleeve but greater than the diameter of the small end of the generally conical surface of the tapered sleeve.
Claim 2
Dependent Claim
228 words
A pivot pin device for a clevis assembly comprising: a generally conically tapered resilient sleeve having only a single split therein and extending longitudinally thereof from end to end the remainder thereof being imperforate, the sides of which are spaced apart at the large diameter end and which converge uniformly toward each other throughout the length of the taper and in a direction toward the small diameter end; and a solid cylindrical pin of a diameter not less than the internal diameter of the large end of said sleeve, the inner surface of said tapered portion of said sleeve being without protuberances, the portion of said pin which is adapted to engage said tapered portion having a substantially constant diameter, whereby said pin may be forced into said sleeve to expand the same to cylindrical shape with said sleeve frictionally gripping said pin throughout its length, said sleeve being of spring steel whereby it will return to said generally conically tapered shape upon removal of said pin therefrom, said sleeve being provided with an outwardly extending peripheral flange at each end thereof, the flange at the small diameter end of said sleeve having an outer diameter no greater than the outer diameter of the other end of said tapered sleeve but greater than the diameter of the small end of the generally conical surface of the tapered sleeve.
Claim 3
Dependent Claim
64 words
A fastener as defined in claim 1 wherein said pin is provided with a tapered axial extension at one end thereof, tapering from the outer periphery of said pin at substantially the samE angle as the taper of said sleeve whereby said pin may be frictionally held to said sleeve, prior to expansion of said sleeve, to facilitate handling said fastener as a unit.
Claim 4
Dependent Claim
65 words
A fastener as defined in claim 1 wherein the small end of said sleeve is provided with a short inwardly extending projection and wherein said pin is provided with a shallow indentation adjacent the leading end thereof and registrable with said projection whereby said projection enters said indentation when said sleeve is fully expanded to resist axial movement of said pin relative to said sleeve.
Claim 5
Dependent Claim
21 words
A fastener as defined in claim 3 wherein said projection is a peripheral bead and said indentation is a peripheral groove.
Claim 6
Dependent Claim
47 words
A fastener as defined in claim 1 including a pilot member frictionally and removably positioned in only the small end of said sleeve and tapering axially outwardly therefrom to align openings in members to be joined sufficiently for the small end of said sleeve to pass therethrough.
References Cited (Backward Citations)
US1109094A
Cited
US1840928A
Cited
GB413410A
Cited
DE735572C
Cited
US2340423A
Cited
US2400142A
Cited
US2479075A
Cited
US2435847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |