Patent US3927649A successfully refreshed from Google Patents.
US3556131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection device for fire hydrants
Assignee: Individual
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Filing: 1968-08-29
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Granted: 1971-01-19
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Expires: 1988-08-29
Abstract
Abstract A device is provided for preventing the unauthorized operation of fire hydrants by concealing the hexagonal member or nut which permits the operation of the fire hydrant and permitting only a limited access thereto. The nut is concealed by connecting thereto a first member which is fixed thereon both axially and rotatably and by supporting on this first member a freely rotatably member which conceals the first member and prevents a rotative force from being applied to the nut. A special wrench is provided which enables authorized engagement of the nut through the limited access which is provided.
Inventors
- 👤 Raul Ralph Diaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:07
CPC Classifications
E; E03; E03B; E03B9/00; E03B9/02; E03B9/04; E03B9/06; F; F16; F16K; F16K35/00; F16K35/06; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043; Y10T137/7062; Y10T137/7065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
263 words
For use with a fire hydrant which includes a polygonal opening member, an arrangement including a protection device to avoid unauthorized access to and manipulation of said member, said protection device comprising a ring adapted for being fixed against axial and rotative movement on said member and in encircling relAtion therewith, and means encircling and freely rotatable on said ring, said means being locked axially on said ring in capping relation with and substantially concealing the latter, said means and ring cooperatively concealing said opening member but exposing a limited portion of the same, said ring including a shoulder portion and said means including two threadably engaged elements sandwiching said shoulder portion therebetween, one of said elements including a dome and a skirt defining with said ring an annular depending from said dome and having an interior thread, said skirt defining with said ring an annular space, the other of said elements being a threaded ring positioned in said annular space and threadably engaging said skirt and provided with at least one exposed and axially disposed recess, and threaded bolts extending through the first said ring for engaging said opening member and locking the first said ring thereon, said one element including a recess wherein is accommodated the shoulder portion of the first said ring and a second contiguous recess encircled by said skirt, said one element including a shoulder between said recesses, said other element including a shoulder between said recess, said other element abutting axially against the shoulder of said one element and against the shoulder of the first said ring.
Claim 2
Dependent Claim
263 words
For use with a fire hydrant which includes a polygonal opening member, an arrangement including a protection device to avoid unauthorized access to and manipulation of said member, said protection device comprising a ring adapted for being fixed against axial and rotative movement on said member and in encircling relAtion therewith, and means encircling and freely rotatable on said ring, said means being locked axially on said ring in capping relation with and substantially concealing the latter, said means and ring cooperatively concealing said opening member but exposing a limited portion of the same, said ring including a shoulder portion and said means including two threadably engaged elements sandwiching said shoulder portion therebetween, one of said elements including a dome and a skirt defining with said ring an annular depending from said dome and having an interior thread, said skirt defining with said ring an annular space, the other of said elements being a threaded ring positioned in said annular space and threadably engaging said skirt and provided with at least one exposed and axially disposed recess, and threaded bolts extending through the first said ring for engaging said opening member and locking the first said ring thereon, said one element including a recess wherein is accommodated the shoulder portion of the first said ring and a second contiguous recess encircled by said skirt, said one element including a shoulder between said recesses, said other element including a shoulder between said recess, said other element abutting axially against the shoulder of said one element and against the shoulder of the first said ring.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |