Patent US2805017A successfully refreshed from Google Patents.
Patent US3837752A successfully refreshed from Google Patents.
US3837752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for break away pole bases
Assignee: Individual
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Filing: 1973-01-26
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Granted: 1974-09-24
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Expires: 1993-01-26
Abstract
Abstract A pole has a base and is secured to an anchor block and spaced above same by a plurality of couplers which are frangible if the force of impact upon the pole exceeds forces such as wind force, normally encountered. Normally such impact forces would be those encountered when a vehicle strikes the pole and the coupler should fracture at a force less than that which is considered critical to the occupants. However, the principle can be utilized under other circumstances if desired.
Inventors
- 👤 J Shewchuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:29
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/06; E; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/631; E01F9/635; F21V21/10; F16; F16B; F16B2200/00; F16B2200/63
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
335 words
A break-away base assembly for detachably connecting an existing apertured pole base plate to an anchor block assembly which includes anchor studs extending upwardly therefrom and bolt means extending through said pole base plate; comprising in combination an apertured lower stiffener plate engagable over the studs with said studs extending therethrough, a plurality of couplers, said couplers each comprising an element having internal screw-threads formed in each end thereof and being screw-threadably engagable upon said studs by the lower ends thereof whereby said lower stiffener plate is clamped to the upper side of said anchor block assembly, means to control the bending stress of said coupler elements with minimum effect on the axial load transfer capability thereof, said means including at least one circumferential groove formed around said coupler elements and adjacent the upper end thereof, located and spaced from the upper end of said coupler elements sufficient distance wherein said bolt means extend within said internal screw threads of said coupler elements a distance at least equal to the position of said groove, an apertured upper stiffener plate engagable upon the upper ends of said coupler elements with the apertures in said upper plate aligned with the internal screwthreads formed in the upper ends of said elements, said pole base plate being engagable upon said upper stiffener plate with the apertures in said pole base plate aligned with the apertures in said upper stiffener plate whereby said bolt means extends through the apertures in said pole base plate and the apertures in said upper stiffener plate and screw-threadably engage said screw-threads formed in the upper ends of said elements in clamping engagement to provide a rigid assembly for holding said pole base plate in spaced and parallel relationship with the upper side of said anchor block, said elements being designed to fail by fracture if the pole experiences near its base, a lateral force greater than normal but less than a predetermined maximum force thus causing the pole to separate from the anchor block.
Claim 2
Dependent Claim
335 words
A break-away base assembly for detachably connecting an existing apertured pole base plate to an anchor block assembly which includes anchor studs extending upwardly therefrom and bolt means extending through said pole base plate; comprising in combination an apertured lower stiffener plate engagable over the studs with said studs extending therethrough, a plurality of couplers, said couplers each comprising an element having internal screw-threads formed in each end thereof and being screw-threadably engagable upon said studs by the lower ends thereof whereby said lower stiffener plate is clamped to the upper side of said anchor block assembly, means to control the bending stress of said coupler elements with minimum effect on the axial load transfer capability thereof, said means including at least one circumferential groove formed around said coupler elements and adjacent the upper end thereof, located and spaced from the upper end of said coupler elements sufficient distance wherein said bolt means extend within said internal screw threads of said coupler elements a distance at least equal to the position of said groove, an apertured upper stiffener plate engagable upon the upper ends of said coupler elements with the apertures in said upper plate aligned with the internal screwthreads formed in the upper ends of said elements, said pole base plate being engagable upon said upper stiffener plate with the apertures in said pole base plate aligned with the apertures in said upper stiffener plate whereby said bolt means extends through the apertures in said pole base plate and the apertures in said upper stiffener plate and screw-threadably engage said screw-threads formed in the upper ends of said elements in clamping engagement to provide a rigid assembly for holding said pole base plate in spaced and parallel relationship with the upper side of said anchor block, said elements being designed to fail by fracture if the pole experiences near its base, a lateral force greater than normal but less than a predetermined maximum force thus causing the pole to separate from the anchor block.
Claim 3
Dependent Claim
84 words
The device according to claim 1 which includes means to control the bending stress of said coupler elements with minimum effect on the axial load transfer capabilities thereof, said means including at least one circumferential groove formed around said coupler and adjacent the lower end thereof located and spaced from the upper end of said coupler elements sufficient distance wherein said bolt means extend within said internal screw threads of said coupler elements a distance at least equal to the position of said groove.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |