US3179082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion bolts
Assignee: Individual
•
Filing: 1962-08-08
•
Granted: 1965-04-20
•
Expires: 1982-08-08
Abstract
No abstract record available.
Inventors
- 👤 William G B Mcclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:49
CPC Classifications
E; E21; E21D; E21D21/00; E21D21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A VISUAL WARNING DEVICE FOR INDICATING THE LOOSE CONDITION OF A FASTENER WHICH IS INCLUSIVE OF A BOLT, SAID DEVICE COMPRISING MEANS INCLUDING A PAIR OF ANNULAR MEMBERS ENCIRCLING THE BOLT AND MOVABLE TOWARDS ONE ANOTHER UPON TIGHTENING OF THE FASTENER, SAID ANNULUR MEMBERS DEFINING THEREBETWEEN A GROOVE OF DIVERGENT SECTION; AN ELASTRIC RING WHICH IS DEFORMABLE IN A RADIAL DIRECTION LOCATED IN THE GROOVE; AND A VISUAL WARNING ELEMENT SURROUNDING THE RING AND RETAINED IN AN ENGAGED POSITION BY THE RING UPON CONTACT WITH THE LATTER AS THE RING IS RADIALLY DEFORMED BY BEING COMPRESSED BETWEEN THE ANNULAR MEMBERS, THE WARNING ELEMENT BEING RELEASED TO ASSUME A DISENGAGED WARNING POSITION UPON RELATIVE MOVEMENT OF THE ANNULAR MEMBERS AWAY FROM ONE ANOTHER WHICH FREES THE ELASTIC RING FROM THE RING.
Claim 2
Dependent Claim
130 words
A VISUAL WARNING DEVICE FOR INDICATING THE LOOSE CONDITION OF A FASTENER WHICH IS INCLUSIVE OF A BOLT, SAID DEVICE COMPRISING MEANS INCLUDING A PAIR OF ANNULAR MEMBERS ENCIRCLING THE BOLT AND MOVABLE TOWARDS ONE ANOTHER UPON TIGHTENING OF THE FASTENER, SAID ANNULUR MEMBERS DEFINING THEREBETWEEN A GROOVE OF DIVERGENT SECTION; AN ELASTRIC RING WHICH IS DEFORMABLE IN A RADIAL DIRECTION LOCATED IN THE GROOVE; AND A VISUAL WARNING ELEMENT SURROUNDING THE RING AND RETAINED IN AN ENGAGED POSITION BY THE RING UPON CONTACT WITH THE LATTER AS THE RING IS RADIALLY DEFORMED BY BEING COMPRESSED BETWEEN THE ANNULAR MEMBERS, THE WARNING ELEMENT BEING RELEASED TO ASSUME A DISENGAGED WARNING POSITION UPON RELATIVE MOVEMENT OF THE ANNULAR MEMBERS AWAY FROM ONE ANOTHER WHICH FREES THE ELASTIC RING FROM THE RING.
References Cited (Backward Citations)
US2464152A
Cited
US3072093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |