Patent US3835549A successfully refreshed from Google Patents.
US3835549A
Expired / Lapsed
US
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Level vial station assembly
Assignee: Stanley Works
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Filing: 1973-09-13
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Granted: 1974-09-17
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Expires: 1993-09-13
Abstract
Abstract A level having a working surface provided with a machined opening so that a level vial mounted with its axis coincident with the central plane of the web of the level frame is visible through the opening from directly above the level. A window having downwardly depending bifurcated legs which straddle the web closes the opening and is secured in place by engagement with a pair of vial retaining caps which are fixed on the sides of the web. The outermost surfaces of the legs of the window are serrated to interlock with mating serrations of the inner walls of the vial retaining caps to accommodate dimensional variations of the machined opening and the window.
Inventors
- 👤 Jong M De
- 👤 A Gutowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:37
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26; G01C9/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
A level comprising a rigid frame provided with parallel working surfaces and a web interconnecting said surfaces, an elongated vial, said web having an aperture for mounting said vial with its axis substantially coincident with the plane of the web, an opening through one of the working surfaces and intersecting said aperture to expose said vial, a transparent window closely received in said opening and a pair of vial retainers overlying said aperture on opposite sides of said web for retaining said vial in said aperture, each of said retainers engaging said window to secure the same to said web, said window being provided with downwardly depending legs engaged by said retainers.
Claim 2
Dependent Claim
112 words
A level comprising a rigid frame provided with parallel working surfaces and a web interconnecting said surfaces, an elongated vial, said web having an aperture for mounting said vial with its axis substantially coincident with the plane of the web, an opening through one of the working surfaces and intersecting said aperture to expose said vial, a transparent window closely received in said opening and a pair of vial retainers overlying said aperture on opposite sides of said web for retaining said vial in said aperture, each of said retainers engaging said window to secure the same to said web, said window being provided with downwardly depending legs engaged by said retainers.
Claim 3
Dependent Claim
33 words
The device of claim 1 wherein said downwardly depending legs are provided with serrations which engage serrations formed on said retainers to adjustably mount said window thereby to accommodate manufacturing variationS and tolerances.
Claim 4
Dependent Claim
32 words
The level of claim 1 wherein said window has a pair of downwardly depending legs which straddle said web and are resiliently engaged by said retainers for locking said window in place.
Claim 5
Dependent Claim
19 words
The level of claim 3 wherein said window and said retainers form a dust proof enclosure for said vial.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |