US4126944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable switch plate and receptacle cover spirit level
Assignee: Individual
•
Filing: 1977-12-08
•
Granted: 1978-11-28
•
Expires: 1997-12-08
Abstract
Abstract In abstract a preferred embodiment of the present invention is a disposable spirit level adapted to be removably attached to a switch plate or receptacle cover whereby the same may be easily leveled and aligned during installation. The disposable level of the present invention incorporates a weak cement bond to removably secure the same to the switch plate or receptacle cover until such time as the switch plate or receptacle cover is installed and properly aligned.
Inventors
- 👤 David H. Burkhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:23
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26; G01C9/28; H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/081; H02G3/14; H02G2200/00; H02G2200/30; Y; Y10; Y10S; Y10S33/00; Y10S33/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
178 words
A device for aiding in proper orientation of covers for components of electrical systems comprising: in combination, a cover having an exposed surface; and a level indicating means removably attached to said surface whereby proper orientation of the cover can be assured during installation of the same and the level can be disposed of when such installation is completed; means includes a liquid filled bulb type bubble spirit level having a front and back; a plurality of serrations disposed over at least a portion of the back of said level; a relatively flat interface having front and back surfaces, a relatively permanent adhesive layer disposed on the front surface of said interface whereby said interface can be permanently secured to the serrated rear surface of said level; and a relatively weak adhesive layer disposed on the rear surface of said interface whereby said interface can be removably attached to the front of said plate or cover to allow level determination and orientation of the same during installation and said level can be removed when said installation is completed.
Claim 2
Independent Claim
178 words
A device for aiding in proper orientation of covers for components of electrical systems comprising: in combination, a cover having an exposed surface; and a level indicating means removably attached to said surface whereby proper orientation of the cover can be assured during installation of the same and the level can be disposed of when such installation is completed; means includes a liquid filled bulb type bubble spirit level having a front and back; a plurality of serrations disposed over at least a portion of the back of said level; a relatively flat interface having front and back surfaces, a relatively permanent adhesive layer disposed on the front surface of said interface whereby said interface can be permanently secured to the serrated rear surface of said level; and a relatively weak adhesive layer disposed on the rear surface of said interface whereby said interface can be removably attached to the front of said plate or cover to allow level determination and orientation of the same during installation and said level can be removed when said installation is completed.
Claim 3
Dependent Claim
129 words
A leveling means for switch plate and receptacle cover type articles comprising: a liquid filled bulb type bubble spirit level having a front and back; a plurality of serrations disposed over at least a portion of the back of said level; a relatively flat interface having front and back surfaces; a relatively permanent adhesive layer disposed on the front surface of said interface whereby said interface can be permanently secured to the serrated rear surface of said level; and a relatively weak adhesive layer disposed on the rear surface of said interface whereby said interface can be removably attached to the front of said plate or cover to allow level determination and orientation of the same during installation and said level can be removed when said installation is completed.
Claim 4
Dependent Claim
129 words
A leveling means for switch plate and receptacle cover type articles comprising: a liquid filled bulb type bubble spirit level having a front and back; a plurality of serrations disposed over at least a portion of the back of said level; a relatively flat interface having front and back surfaces; a relatively permanent adhesive layer disposed on the front surface of said interface whereby said interface can be permanently secured to the serrated rear surface of said level; and a relatively weak adhesive layer disposed on the rear surface of said interface whereby said interface can be removably attached to the front of said plate or cover to allow level determination and orientation of the same during installation and said level can be removed when said installation is completed.
Claim 5
Dependent Claim
14 words
The means of claim 2 whereby said bulb has a centering indicia marked thereon.
References Cited (Backward Citations)
US3123918A
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US3116563A
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US3279080A
Cited
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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) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |