Patent US3930631A successfully refreshed from Google Patents.
US3930631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting device particularly for ceiling or wall fittings
Assignee: Individual
•
Filing: 1974-11-04
•
Granted: 1976-01-06
•
Expires: 1994-11-04
Abstract
Abstract A mounting device, particularly for ceiling or wall fittings, comprising a first member adapted to engage a means of attachment provided in a mounting surface by means of a fastening device whereby said first member will bear against said mounting surface, and a second member having means for engagement with a complementary attachment device of said first member said fastening device having a groove provided in said first member and inclined in relation to said mounting surface to gradually engage said means of attachment when said first member is being secured to said mounting surface.
Inventors
- 👤 Sven Laarm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:18
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/03
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
A mounting device for a ceiling or wall fitting, comprising a first member adapted to engage attachment means disposed in a mounting surface, and a second member having means to engage complementary attachment portions of said first member for bringing said first and second members into positive engagement with each other, said first member being formed with a groove which follows a helical path around said attachment means so that rotation of said first member is one sense about said attachment means brings said attachment means gradually into firm engagement with said first member to urge said first member against said mounting surface.
Claim 2
Dependent Claim
103 words
A mounting device for a ceiling or wall fitting, comprising a first member adapted to engage attachment means disposed in a mounting surface, and a second member having means to engage complementary attachment portions of said first member for bringing said first and second members into positive engagement with each other, said first member being formed with a groove which follows a helical path around said attachment means so that rotation of said first member is one sense about said attachment means brings said attachment means gradually into firm engagement with said first member to urge said first member against said mounting surface.
Claim 3
Dependent Claim
17 words
A mounting device as claimed in claim 1, wherein said groove is provided with radially extending corrugations.
Claim 4
Dependent Claim
35 words
A mounting device as claimed in claim 1, wherein said complementary attachment portions include inclined flanges provided in said first member, said second member including vanes as said means to engage the complementary attachment portions.
Claim 5
Dependent Claim
126 words
A mounting device for a ceiling or wall fitting, comprising a first member adapted to engage a mounting surface, a second member having means to engage complementary attachement portions of said first member for bringing said first and second members into positive engagement with each other, and a fastening device adapted to be interposed between said first member and attachment means disposed in the mounting surface, said fastening device being formed with a groove which follows a helical path around said attachment means so that rotation of said fastening device in one sense about said attachment means brings said attachment means gradually into firm engagement with said fastening device to urge said fastening device against said first member and said first member against said mounting surface.
Claim 6
Dependent Claim
126 words
A mounting device for a ceiling or wall fitting, comprising a first member adapted to engage a mounting surface, a second member having means to engage complementary attachement portions of said first member for bringing said first and second members into positive engagement with each other, and a fastening device adapted to be interposed between said first member and attachment means disposed in the mounting surface, said fastening device being formed with a groove which follows a helical path around said attachment means so that rotation of said fastening device in one sense about said attachment means brings said attachment means gradually into firm engagement with said fastening device to urge said fastening device against said first member and said first member against said mounting surface.
Claim 7
Dependent Claim
17 words
A mounting device as claimed in claim 4, wherein said groove is provided with radially extending corrugations.
Claim 8
Dependent Claim
16 words
A mounting device as claimed in claim 4, wherein said fastening device is an elastic washer.
Claim 9
Dependent Claim
35 words
A mounting device as claimed in claim 4, wherein said complementary attachment portions include inclined flanges provided in said first member, said second member including vanes as said means to engage the complementary attachment portions.
References Cited (Backward Citations)
US1215838A
Cited
US1507758A
Cited
US1557515A
Cited
US1551914A
Cited
US2239125A
Cited
US3407454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |