Patent US3714859A successfully refreshed from Google Patents.
US3714859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorbing structures
Assignee: Oregon Tool Inc
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Filing: 1970-09-18
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Granted: 1973-02-06
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Expires: 1990-09-18
Abstract
Abstract Fastener units (FIGS. 1 and 2) include drawable rods having drawable portions and heads of the same diameter and wedging units tensioning the rods. Another fastener unit (FIG. 3) has a die, a threaded head and a nut. A further fastener unit (FIG. 4) has a combined die and threaded plug connected by a frangible portion. Further fastener units (FIGS. 5 to 12) include capscrewlike drawable rods. Another fastener unit (FIGS. 13 and 14) has a drawable rectangular bar. A further fastener unit (FIGS. 15 and 16) has a die holder into which a drawing die strip is inserted from one side. Another fastener unit (FIGS. 17 and 18) includes a drawable spacer sleeve. Other fastener units (FIGS. 19 to 24) include splittable spacer sleeves. Another fastener structure (FIGS. 25 to 28) has extrudable tubes mounting a bumper on a vehicle frame. Another fastener unit (FIGS. 29 and 30) includes a drawing die and a rod bender for absorbing energy. A further fastener unit (FIGS. 31 to 33) has a drawable rod with two tapered drawable portions.
Inventors
- 👤 M Tupper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:32
CPC Classifications
F; F16; F16B; F16B31/00; F16B31/02; F16B3/00; F16B3/04; F16P; F16P5/00; F16P5/005; F16B19/00; F16B19/04; F16B19/08; F16B19/10; F16B19/1027; F16B19/1036; F16B19/1045; F16B19/1063; F16B5/00; F16B5/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
In an energy absorbing fastener structure, a drawable rod having a cylindrical shank having a predetermined diameter, a cylindrical drawable portion of a larger diameter at one end of the shank and a head of a larger transverse dimension than said predetermined diameter at the other end of the shank so that the strength of the head is substantially greater than that of the shank, the drawable portion being joined to the shank by a tapered transition portion, and a tubular member having an internally threaded plug portion, a flanged internally tapered die portion and a frangible portion defining the minimum crosssectional area of the tubular member joining the plug portion and the die portion, the tubular member being positioned on the shank with the die portion in substantial abutment with the drawable portion and with the plug portion in substantial abutment with the head.
Claim 2
Dependent Claim
145 words
In an energy absorbing fastener structure, a drawable rod having a cylindrical shank having a predetermined diameter, a cylindrical drawable portion of a larger diameter at one end of the shank and a head of a larger transverse dimension than said predetermined diameter at the other end of the shank so that the strength of the head is substantially greater than that of the shank, the drawable portion being joined to the shank by a tapered transition portion, and a tubular member having an internally threaded plug portion, a flanged internally tapered die portion and a frangible portion defining the minimum crosssectional area of the tubular member joining the plug portion and the die portion, the tubular member being positioned on the shank with the die portion in substantial abutment with the drawable portion and with the plug portion in substantial abutment with the head.
Claim 3
Dependent Claim
145 words
In an energy absorbing fastener structure, a drawable rod having a cylindrical shank having a predetermined diameter, a cylindrical drawable portion of a larger diameter at one end of the shank and a head of a larger transverse dimension than said predetermined diameter at the other end of the shank so that the strength of the head is substantially greater than that of the shank, the drawable portion being joined to the shank by a tapered transition portion, and a tubular member having an internally threaded plug portion, a flanged internally tapered die portion and a frangible portion defining the minimum cross-sectional area of the tubular member joining the plug portion and the die portion, the tubular member being positioned on the shank with the die portion in substantial abutment with the drawable portion and with the plug portion in substantial abutment with the head.
Claim 4
Dependent Claim
145 words
In an energy absorbing fastener structure, a drawable rod having a cylindrical shank having a predetermined diameter, a cylindrical drawable portion of a larger diameter at one end of the shank and a head of a larger transverse dimension than said predetermined diameter at the other end of the shank so that the strength of the head is substantially greater than that of the shank, the drawable portion being joined to the shank by a tapered transition portion, and a tubular member having an internally threaded plug portion, a flanged internally tapered die portion and a frangible portion defining the minimum cross-sectional area of the tubular member joining the plug portion and the die portion, the tubular member being positioned on the shank with the die portion in substantial abutment with the drawable portion and with the plug portion in substantial abutment with the head.
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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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |