US3689004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replacement cartridge for a coilable rule
Assignee: Stanley Works
•
Filing: 1971-05-12
•
Granted: 1972-09-05
•
Expires: 1991-05-12
Abstract
Abstract A replacement cartridge for a coilable rule wherein a formsustaining spool mounts a coiled measuring blade and a recoil spring. The hub of the rule is separable from the spool and the recoil spring is attached thereto. The hub has an integral keeper which overlies the coiled measuring tape and is engaged by the hook at the end of the blade for maintaining the integrity of the replacement cartridge until it is inserted in the casing for the tape.
Inventors
- 👤 Martin M Brown
- 👤 Carl C Stoutenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:05
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/10; G01B3/1041; G01B3/1043; G01B3/1046
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
A replacement cartridge for a coilable rule comprising a form-sustaining spool mounting a coiled measuring blade having a hook at the end thereof, said spool having a centrally disposed aperture, a removable hub received within said aperture, a recoil spring having one end secured to said hub and the other end secured to the inner end of said measuring blade, a keeper arm fixed to said hub and overlying said coiled measuring blade and engaged by said hook to prevent the rotation of said hub relative to said spool.
Claim 2
Dependent Claim
89 words
A replacement cartridge for a coilable rule comprising a form-sustaining spool mounting a coiled measuring blade having a hook at the end thereof, said spool having a centrally disposed aperture, a removable hub received within said aperture, a recoil spring having one end secured to said hub and the other end secured to the inner end of said measuring blade, a keeper arm fixed to said hub and overlying said coiled measuring blade and engaged by said hook to prevent the rotation of said hub relative to said spool.
Claim 3
Dependent Claim
32 words
The replacement cartridge of claim 1 wherein said spool has side walls and an annular flange extends between the side walls of the spool, said flange mounting the coiled measuring blade thereon.
Claim 4
Dependent Claim
27 words
A device as recited in claim 1 wherein said keeper arm is secured to said hub by a radial arm disposed at the end of said spool.
Claim 5
Dependent Claim
57 words
A device as recited in claim 3 including a casing defining a chamber therein, said casing being provided with a noncircular projection and said hub being provided with a mating noncircular projection received within the recess to mount and fix said hub member against rotation relative to said casing member under the bias of the recoil spring.
Claim 6
Dependent Claim
19 words
A device as recited in claim 4 wherein said casing is provided with a recess receiving said radial arm.
References Cited (Backward Citations)
US1804975A
Cited
US2767426A
Cited
GB867886A
Cited
US3033488A
Cited
US3482798A
Cited
US3547371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |