Patent US3794826A successfully refreshed from Google Patents.
US3794826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for achieving holding engagement with the inside of a pipe or stem
Assignee: Cooper Industries LLC
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Filing: 1972-07-27
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Granted: 1974-02-26
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Expires: 1992-07-27
Abstract
Abstract A pole-top light is connected to the open end of the hollow support hole. A support structure is connected to the light assembly and carries a spring which is positioned within the pole. A threaded rod connects the spring member to the support structure and itself has a threaded connection so that rotation of the rod displaces the spring in an axial direction against its inherent bias causing the spring member to expand laterally into binding engagement with the interior walls of the pole. The threaded rod is accessible from the exterior of the pole to permit selective engagement of the spring member with the interior pole walls or disengagement therefrom. Several alternative spring forms are disclosed (a bowed spring, resilient discs, etc.) as well as various arrangements of the threaded member to achieve displacement of the spring.
Inventors
- 👤 E Jablonski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:54
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/10; F21V21/116; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1041
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
175 words
The combination comprising, a generally elongated, hollow member having an open end, a light assembly including an adapter extending into said open end, an elongated threaded member connected to said adapter and extending into said hollow member generally parallel to the longitudinal axis thereof but accessible from exteriorly of said hollow member for producing turning movement thereof relative to said adapter, means defining a threaded connection for and in which said elongated threaded member is rotatable, a spring member having a bowed configuration in axial cross section and including a central web pOrtion and oppositely projecting leg portions extending from said web portion toward the inner walls of said hollow member, and means connecting said spring member to said elongated member and operative to translate rotation of said threaded member in said threaded connection into flattening movement of said bowed spring moving said leg portions laterally into clamping engagement with said inner walls of said hollow member to hold said adapter against removal from said hollow member and said light assembly on said hollow member.
Claim 2
Dependent Claim
175 words
The combination comprising, a generally elongated, hollow member having an open end, a light assembly including an adapter extending into said open end, an elongated threaded member connected to said adapter and extending into said hollow member generally parallel to the longitudinal axis thereof but accessible from exteriorly of said hollow member for producing turning movement thereof relative to said adapter, means defining a threaded connection for and in which said elongated threaded member is rotatable, a spring member having a bowed configuration in axial cross section and including a central web pOrtion and oppositely projecting leg portions extending from said web portion toward the inner walls of said hollow member, and means connecting said spring member to said elongated member and operative to translate rotation of said threaded member in said threaded connection into flattening movement of said bowed spring moving said leg portions laterally into clamping engagement with said inner walls of said hollow member to hold said adapter against removal from said hollow member and said light assembly on said hollow member.
Claim 3
Dependent Claim
103 words
The combination of claim 1 wherein said elongated threaded member comprises a headed elongated bolt, wherein said adapter includes a surface facing outwardly relative to said hollow member open end and having an aperture therein, wherein said bolt extends through said adapter aperture and has its head in engagement with said bowed portion of said spring member, and including a nut disposed at said aperture in engagement with said adapter surface and in which said bolt is threaded to thereby provide said threaded connection, whereby relative rotation of said bolt and said nut advance said bolt axially tending to flatten said spring member.
Claim 4
Dependent Claim
120 words
The combination of claim 2 including a second spring member having a bowed configuration in axial cross section and oppositely projecting leg portions extending from said web portion toward the inner walls of said hollow member, said connecting means also connecting said second spring member to said elongated member to translate rotation of said threaded member in said threaded connection into flattening movement of said second spring member to urge the leg portions thereof into clamping engagement with said inner walls, and wherein said second spring member is disposed at an angle to said first mentioned spring member and is connected to said bolt head so that axial advancement of said bolt also tends to flatten said second spring member.
Claim 5
Dependent Claim
35 words
The combination of claim 3 wherein said spring members each include an aperture, said apertures are aligned, and said bolt extends through said apertures with both of said spring members bearing on said bolt head.
Claim 6
Dependent Claim
31 words
The combination of claim 2 wherein said spring member includes an aperture and said bolt extends through said aperture in said spring member, said spring member bearing on said bolt head.
Claim 7
Dependent Claim
38 words
The combination of claim 2 wherein said adapter includes surfaces disposed at an angle to the axis of said hollow member and against which the leg portions of said spring member bear as said spring member is flattened.
Claim 8
Dependent Claim
98 words
The combination of claim 1 including a second spring member having a bowed configuration in axial cross section and oppositely projecting leg portions extending from said web portion toward the inner walls of said hollow member, said connecting means also connecting said second spring member to said elongated member to translate rotation of said threaded member in said threaded connection into flattening movement of said second spring member to urge the leg portions thereof into clamping engagement with said inner walls, and wherein said second spring member is disposed at an angle to said first mentioned spring member.
Claim 9
Dependent Claim
38 words
The combination of claim 7 wherein said adapter includes surfaces disposed at an angle to the axis of said hollow members and against which the leg portions of said spring members bear as said spring members are flattened.
Claim 10
Dependent Claim
38 words
The combination of claim 1 wherein said adapter includes surfaces disposed at an angle to the axis of said hollow member and against which the leg portions of said spring member bear as said spring member is flattened.
Claim 11
Dependent Claim
102 words
The combination of claim 1 including a bar positioned generally perpendicular to the axis of said hollow member, said bar extending between and engaging said leg portions of said spring member, wherein said threaded connection for said elongated threaded member is with said bar, and including means holding said bar against rotation and said elongated threaded member is being held against axial movement so that said bar is free to advance axially in response to rotation of said elongated threaded member, whereby rotation of said elongated threaded member advances said bar axially tending to flatten said spring and produce said clamping engagement.
Claim 12
Dependent Claim
65 words
The combination of claim 10 wherein said elongated threaded member comprises a headed elongated bolt, said adapter includes a surface facing outwardly relative to said hollow member open end and having an aperture therein, and said bolt extends through said adapter aperture and has its head in engagement with said adapter surface adjacent said aperture and its opposite end in threaded engagement with said bar.
Claim 13
Dependent Claim
168 words
An assembly for achieving holding engagement with the interior walls of a hollow member comprising, in combination, a support structure, an elongated threaded member, means connecting said elongated threaded member to said support structure for rotational movement relative to said support structure, means defining a threaded connection for and in which said elongated threaded member is rotatable, a spring member having a bowed configuration in axial cross section and including a central web portion and oppositely projecting leg portions extending from said web portion at an angle to the longitudinal axis of said elongated threaded member, and means connecting said spring member to said elongated member and operative to translate rotation of said threaded member in said threaded connection into flattening movement of said bowed spring whereby said assembly can be positioned in the open end of a hollow, generally tubular member and rotation of said elongated threaded member flattens said spring urging the leg portions thereof into clamping engagement with the inner walls of said hollow member.
Claim 14
Dependent Claim
168 words
An assembly for achieving holding engagement with the interior walls of a hollow member comprising, in combination, a support structure, an elongated threaded member, means connecting said elongated threaded member to said support structure for rotational movement relative to said support structure, means defining a threaded connection for and in which said elongated threaded member is rotatable, a spring member having a bowed configuration in axial cross section and including a central web portion and oppositely projecting leg portions extending from said web portion at an angle to the longitudinal axis of said elongated threaded member, and means connecting said spring member to said elongated member and operative to translate rotation of said threaded member in said threaded connection into flattening movement of said bowed spring whereby said assembly can be positioned in the open end of a hollow, generally tubular member and rotation of said elongated threaded member flattens said spring urging the leg portions thereof into clamping engagement with the inner walls of said hollow member.
Claim 15
Dependent Claim
104 words
The combination of claim 12 wherein said elongated threaded member comprises a headed elongated bolt, wherein said support structure includes a surface facing outwardly relative to said bowed spring member and having an aperture therein, wherein said bolt extends through said support structure aperture and has its head in engagement with said bowed portion of said spring member, and including a nut disposed at said aperture in engagement with said adapter surface and in which said bolt is threaded to thereby provide said threaded connection, whereby relative rotation of said bolt and said nut advance said bolt axially tending to flatten said spring member.
Claim 16
Dependent Claim
102 words
The combination of claim 12 including a bar positioned generally perpendicular to the longitudinal axis of said threaded member, said bar extending between and engaging said leg portions of said spring member, wherein said threaded connection for said elongated threaded member is with said bar, and including means holding said bar against rotation and said elongated threaded member being held against axial movement so that said bar is free to advance axially in response to rotation of said elongated threaded member, whereby rotation of said elongated threaded member advances said bar axially tending to flatten said spring and produce said clamping engagement.
Claim 17
Dependent Claim
65 words
The combination of claim 14 wherein said elongated threaded member comprises a headed elongated bolt, said support structure includes a surface facing outwardly relative to said spring member and having an aperture therein, and said bolt extends through said support structure and has its head in engagement with said support structure surface adjacent said aperture and its opposite end in threaded engagement with said bar.
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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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |