US3888010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chalk line device
Assignee: Stanley Works
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Filing: 1973-12-10
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Granted: 1975-06-10
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Expires: 1993-12-10
Abstract
Abstract A chalk line dispensing and storage device of plumbbob configuration includes a pair of mating side members defining a chalk-receiving chamber. The side members are interconnected by a releasable pivot including a shouldered recess in one of the members adjacent its mating surface and a depending tongue-like flange in the other side member pivotably receivable within the recess for firm engagement with the shoulder. The mating surfaces provide a chalk-tight seal through a snap-fit interconnection and the sides are further held by a separate releasable clamp mounted on the members in bridging fashion at a position remote from the releasable pivot. The side members of the casing apply a slight axial force on the crank arm for sealing the chamber in the crank area without causing misalignment of the separate chalk line reel mounted on the crank assembly.
Inventors
- 👤 Robert Steven Hyde
- 👤 Jong Maarten Cornelis De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:31
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
203 words
A chalk line dispensing and storage device comprising a casing of plumbbob configuration having an aperture in the top thereof, said casing including a pair of mating side members defining a chalk chamber and having longitudinally extending mating surfaces, a chalk line reel rotatably mounted in said chalk chamber, a chalk line mounted on the reel and extending from the chamber through said top aperture, said side members being interconnected by a releasable pivot including a shouldered recess in one of said members adjacent said mating surface and a depending flange in the other of said side members pivotably receivable within the recess for engagement with the shoulder, a mountable resilient clamp bridging said side members at a position remote from said releasable pivot and interconnected therewith to retain the mating surfaces in intimate engagement and prevent separation thereof, a compressible seal and a crank assembly mounted on one of said side members for engagement with said seal, said crank assembly including a drive shaft mounting the reel for rotation therewith, said casing side members axially biasing said crank assembly into frictional engagement with said seal to prevent free wheeling rotation of said reel while sealing the chalk chamber at said crank assembly.
Claim 2
Dependent Claim
203 words
A chalk line dispensing and storage device comprising a casing of plumbbob configuration having an aperture in the top thereof, said casing including a pair of mating side members defining a chalk chamber and having longitudinally extending mating surfaces, a chalk line reel rotatably mounted in said chalk chamber, a chalk line mounted on the reel and extending from the chamber through said top aperture, said side members being interconnected by a releasable pivot including a shouldered recess in one of said members adjacent said mating surface and a depending flange in the other of said side members pivotably receivable within the recess for engagement with the shoulder, a mountable resilient clamp bridging said side members at a position remote from said releasable pivot and interconnected therewith to retain the mating surfaces in intimate engagement and prevent separation thereof, a compressible seal and a crank assembly mounted on one of said side members for engagement with said seal, said crank assembly including a drive shaft mounting the reel for rotation therewith, said casing side members axially biasing said crank assembly into frictional engagement with said seal to prevent free wheeling rotation of said reel while sealing the chalk chamber at said crank assembly.
Claim 3
Dependent Claim
42 words
The device of claim 1 wherein said crank assembly has a hub portion, one of said side members has a hub portion and said reel is supported for rotation on the hub portions of both said crank assembly and said side member.
Claim 4
Dependent Claim
40 words
The device of claim 1 wherein said casing is a rigid plastic member having relatively pointed tip and nose portions, said releasable pivot being located at said tip portion and said clamp engaging the side members at the nose portion.
Claim 5
Dependent Claim
164 words
A chalk line dispensing and storage device comprising a casing of plumbbob configuration having an aperture in the top thereof, said casing including a pair of mating side members defining a chalk chamber and having longitudinally extending mating surfaces, a chalk line reel rotatably mounted in said chalk chamber, a chalk line mounted on the reel and extending from the chamber through said top aperture, said side members being interconnected by a releasable pivot including a shouldered recess in one of said members adjacent said mating surface and a depending flange in the other of said side members pivotably receivable within the recess for engagement with the shoulder, a mountable resilient clamp bridging said side members at a position remote from said releasable pivot and interconnected therewith to retain the mating surfaces in intimate engagement and prevent separation thereof, said mating surfaces having a snap-fit interconnection and said casing is provided with a chalk port having a cover slidable between open and closed positions.
Claim 6
Dependent Claim
164 words
A chalk line dispensing and storage device comprising a casing of plumbbob configuration having an aperture in the top thereof, said casing including a pair of mating side members defining a chalk chamber and having longitudinally extending mating surfaces, a chalk line reel rotatably mounted in said chalk chamber, a chalk line mounted on the reel and extending from the chamber through said top aperture, said side members being interconnected by a releasable pivot including a shouldered recess in one of said members adjacent said mating surface and a depending flange in the other of said side members pivotably receivable within the recess for engagement with the shoulder, a mountable resilient clamp bridging said side members at a position remote from said releasable pivot and interconnected therewith to retain the mating surfaces in intimate engagement and prevent separation thereof, said mating surfaces having a snap-fit interconnection and said casing is provided with a chalk port having a cover slidable between open and closed positions.
Claim 7
Dependent Claim
157 words
A chalk line dispensing and storage device comprising a casing of plumbbob configuration having an aperture in the top thereof, said casing including a pair of mating side members defining a chalk chamber and having longitudinally extending mating surfaces, a chalk line reel rotatably mounted in said chalk chamber, a chalk line mounted on the reel and extending from the chamber through said top aperture, said side members being interconnected by a releasable pivot including a shouldered recess in one of said meMbers adjacent said mating surface and a depending flange in the other of said side members pivotably receivable within the recess for engagement with the shoulder, a mountable resilient clamp bridging said side members at a position remote from said releasable pivot and interconnected therewith to retain the mating surfaces in intimate engagement and prevent separation thereof, said clamp is provided with a chalk line guide in registry with the top aperture of the casing.
Claim 8
Dependent Claim
157 words
A chalk line dispensing and storage device comprising a casing of plumbbob configuration having an aperture in the top thereof, said casing including a pair of mating side members defining a chalk chamber and having longitudinally extending mating surfaces, a chalk line reel rotatably mounted in said chalk chamber, a chalk line mounted on the reel and extending from the chamber through said top aperture, said side members being interconnected by a releasable pivot including a shouldered recess in one of said meMbers adjacent said mating surface and a depending flange in the other of said side members pivotably receivable within the recess for engagement with the shoulder, a mountable resilient clamp bridging said side members at a position remote from said releasable pivot and interconnected therewith to retain the mating surfaces in intimate engagement and prevent separation thereof, said clamp is provided with a chalk line guide in registry with the top aperture of the casing.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |