Patent US4407479A successfully refreshed from Google Patents.
US4407479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe hanger
Assignee: Individual
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Filing: 1981-11-09
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Granted: 1983-10-04
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Expires: 2001-11-09
Abstract
Abstract A pipe hanger between whose legs a joint member is inserted and held by the force of a bolt. Both a rigid connection of the joint member with the pipe hanger and a slipping connection of the joint member with the pipe hanger is achieved enabled by spiral ridges of teeth which in the case of the rigid connection engage and in the case of the slipping connection glide upon each other.
Inventors
- 👤 Hubert Combe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:55
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/08; F16L3/10; F16L3/11; F16L3/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
A pipe hanger comprising, a pair of oppositely curve legs, joined at one end and having flat contact areas facing each other at the opposite end, the contact areas having inwardly facing, annular, first serrated surfaces defining holes within each annular surface, a cylindrical member having a central region of larger diameter and at least one end region of narrower diameter, the central region terminating on opposite sides in annular second serrated surfaces for engaging the first serrated surfaces of the contact areas, the end region of narrower diameter passing through a hole in an annular surface and having means for clamping the cylindrical member relative to the contact areas.
Claim 2
Dependent Claim
110 words
A pipe hanger comprising, a pair of oppositely curve legs, joined at one end and having flat contact areas facing each other at the opposite end, the contact areas having inwardly facing, annular, first serrated surfaces defining holes within each annular surface, a cylindrical member having a central region of larger diameter and at least one end region of narrower diameter, the central region terminating on opposite sides in annular second serrated surfaces for engaging the first serrated surfaces of the contact areas, the end region of narrower diameter passing through a hole in an annular surface and having means for clamping the cylindrical member relative to the contact areas.
Claim 3
Dependent Claim
28 words
The pipe hanger of claim 1 wherein the first serrated surfaces have teeth running spirally complementary to the second serrated surfaces, thereby forming a locked connection when engaged.
Claim 4
Dependent Claim
28 words
The pipe hanger of claim 1 wherein the first serrated surfaces have teeth different in number than the second serrated surfaces for forming a slipping connection when engaged.
Claim 5
Dependent Claim
35 words
The pipe hanger of claim 1 wherein the cylindrical member comprises a pair of narrow diameter threaded studs at end regions thereof, the studs coaxially extending into a larger diameter member in the central region.
Claim 6
Dependent Claim
37 words
The pipe hanger of claim 1 wherein at least some of said serrated surfaces have teeth with truncated upper surfaces forming a free space upon engagement with opposed serrated surfaces, thereby providing for accumulation of foreign matter.
Claim 7
Dependent Claim
119 words
A pipe hanger comprising, a pair of oppositely curved legs, the ends of said curved legs having flat contact areas facing each other, the contact areas having inwardly facing, annular, first serrated surfaces defining holes within each annular surface and, a pair of cylindrical members joining said legs at both ends, each cylindrical member having a central region of larger diameter and at least one end region of narrow diameter, the central region terminating an opposite sides in annular second serrated surfaces for engaging the first serrated surfaces of the contact areas, the end region of narrower diameter passing through a hole in an annular surface and having means for clamping the cylindrical member relative to the contact areas.
Claim 8
Dependent Claim
119 words
A pipe hanger comprising, a pair of oppositely curved legs, the ends of said curved legs having flat contact areas facing each other, the contact areas having inwardly facing, annular, first serrated surfaces defining holes within each annular surface and, a pair of cylindrical members joining said legs at both ends, each cylindrical member having a central region of larger diameter and at least one end region of narrow diameter, the central region terminating an opposite sides in annular second serrated surfaces for engaging the first serrated surfaces of the contact areas, the end region of narrower diameter passing through a hole in an annular surface and having means for clamping the cylindrical member relative to the contact areas.
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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |