Patent US4143462A successfully refreshed from Google Patents.
US4143462A
Expired / Lapsed
US
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Chalk line device
Assignee: GERTZ ARTHUR JR
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Filing: 1977-10-13
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Granted: 1979-03-13
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Expires: 1997-10-13
Abstract
Abstract A chalk line device for storing and dispensing a chalk line, and also functioning as a plumb bob and arc scribing instrumentality. The device includes a housing formed of a pair of cooperating side plates which define a chalk and reel-receiving chamber having openings at opposite ends thereof. A centrally mounted chalk line reel is rotatably mounted within the chamber between the end openings. An arc scribing disk is mounted at one end of the chamber to project partially through one of the end openings, and a chalk line is extended from the reel through the opening at the other end of the chamber.
Inventors
- 👤 Arthur R. Gertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:06
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/38
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
A chalk line device comprising: a hollow housing having an opening at each of the opposite ends thereof; a chalk line reel inside the housing; a chalk line extending from the reel through the opening at one end of the housing; and an arc scribing disk assembly mounted in the opening at the other end of the housing and including a scribing disk having a part thereof inside the housing and a part thereof outside the housing.
Claim 2
Dependent Claim
77 words
A chalk line device comprising: a hollow housing having an opening at each of the opposite ends thereof; a chalk line reel inside the housing; a chalk line extending from the reel through the opening at one end of the housing; and an arc scribing disk assembly mounted in the opening at the other end of the housing and including a scribing disk having a part thereof inside the housing and a part thereof outside the housing.
Claim 3
Dependent Claim
19 words
A chalk line device as defined in claim 1 wherein said housing comprises a pair of cooperating side plates.
Claim 4
Dependent Claim
33 words
A chalk line device as defined in claim 2 wherein said device further includes a closure plate movably mounted in said housing for movement to open and close an opening in said housing.
Claim 5
Dependent Claim
33 words
A chalk line device as defined in claim 1 wherein said device further includes a closure plate movably mounted in said housing for movement to open and close an opening in said housing.
Claim 6
Dependent Claim
31 words
A chalk line device as defined in claim 1 and further characterized as including pad means mounted adjacent said arc scribing disk assembly for transferring chalk dust to said disk assembly.
Claim 7
Dependent Claim
53 words
A chalk line device as defined in claim 5 wherein said disk assembly comprises: a pair of metallic washers; a felt disk mounted between said washers; and shaft means extending across the hollow interior of said housing through said washers and felt disk for supporting said arc scribing disk assembly in said housing.
Claim 8
Dependent Claim
33 words
A chalk line device as defined in claim 6 wherein said device further includes a closure plate movably mounted in said housing for movement to open and close and opening in said housing.
Claim 9
Dependent Claim
38 words
A chalk line device as defined in claim 7 wherein said housing is of generally diamond-shaped configuration with said openings located in the pointed opposite ends thereof whereby said device is capable of use as a plumb bob.
Claim 10
Dependent Claim
53 words
A chalk line device as defined in claim 1 wherein said disk assembly comprises: a pair of metallic washers; a felt disk mounted between said washers; and shaft means extending across the hollow interior of said housing through said washers and felt disk for supporting said arc scribing disk assembly in said housing.
Claim 11
Dependent Claim
38 words
A chalk line device as defined in claim 1 and further characterized as including a solid body of chalk on opposite sides of said chalk line adjacent the opening through which said chalk line passes from said housing.
Claim 12
Dependent Claim
38 words
A chalk line device as defined in claim 1 wherein said housing is of generally diamond-shaped configuration with said openings located in the pointed opposite ends thereof whereby said device is capable of use as a plumb bob.
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) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |