US3744140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circumference measuring device
Assignee: Abbott Laboratories
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Filing: 1971-01-11
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Granted: 1973-07-10
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Expires: 1991-01-11
Abstract
Abstract A circumference measuring device including an elongated body forming a handle grip and a housing, a rotatable drum disposed in the housing, a flexible band having one end secured to the drum and a slot in the other end thereof to permit looping of the flexible band, and a rotatable measuring dial secured to a common shaft with the drum such that movement of the drum in tightening the flexible loop around an object to be measured moves the dial to permit the obtention of a circumferential measurement.
Inventors
- 👤 H Kyrk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:28
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/34; G01B5/00; G01B5/02; G01B5/025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
190 words
A circumference measuring device comprising an elongated body forming a housing, a handle grip extending from one side of said housing, and an arm extending from an opposite side of said housing; a drum rotatably disposed in said housing; a flexible band having a slot therein, an intermediate portion looped upon itself and passing through said slot to form a measuring loop, a movable end secured to said drum, and a stationary end secured to said arm; spring means disposed in said housing and connected with said drum to bias said drum in a direction to decrease the circumference of said measuring loop; and a dial rotatably movable with said drum and extending from said housing adjacent said handle grip to be movable with the thumb of a hand grasping said handle grip against the bias of said spring means to increase the circumference of said measuring loop; said dial having a scale around the periphery thereof and said body having an indexing mark thereon adjacent said dial whereby the circumference of an object is determined by the position of said scale on said dial relative to said indexing mark.
Claim 2
Dependent Claim
190 words
A circumference measuring device comprising an elongated body forming a housing, a handle grip extending from one side of said housing, and an arm extending from an opposite side of said housing; a drum rotatably disposed in said housing; a flexible band having a slot therein, an intermediate portion looped upon itself and passing through said slot to form a measuring loop, a movable end secured to said drum, and a stationary end secured to said arm; spring means disposed in said housing and connected with said drum to bias said drum in a direction to decrease the circumference of said measuring loop; and a dial rotatably movable with said drum and extending from said housing adjacent said handle grip to be movable with the thumb of a hand grasping said handle grip against the bias of said spring means to increase the circumference of said measuring loop; said dial having a scale around the periphery thereof and said body having an indexing mark thereon adjacent said dial whereby the circumference of an object is determined by the position of said scale on said dial relative to said indexing mark.
Claim 3
Dependent Claim
107 words
The invention as recited in claim 1 wherein said housing includes a central wall, a first bore on one side of said wall to receive said drum, a second bore on the other side of said wall to receive said spring means, an aperture extending through said wall and connecting said first and second bores, and a channel aligned with said arm and communicating with said first bore to receive said flexible band, and further comprising a shaft having a first end secured to said drum, a second end secured to said dial and a central portion extending through said aperture and connected with said spring means.
Claim 4
Dependent Claim
44 words
The invention as recited in claim 2 wherein said spring means is a flat spring wound around said shaft and having a first end connected with Said central portion of said shaft and a second end held in a recess in said second bore.
Claim 5
Dependent Claim
88 words
The invention as recited in claim 1 wherein said dial and said drum are secured to a shaft, said shaft being movable in a first direction to increase the circumference of said measuring loop and in a second direction opposite to said first direction to decrease the circumference of said measuring loop, and said spring means is connected with said shaft to bias said shaft in said second direction whereby said measuring loop is tightened around an object to be measured by said spring means under uniform tension.
Claim 6
Dependent Claim
83 words
The invention as recited in claim 4 wherein said housing includes a first bore housing said drum, a second bore housing said spring means, and a small diameter aperture extending through a wall separating said first and second bores to receive said shaft, said second bore having a recess in the outer edge thereof, and said spring means is a flat spring wound around said shaft and having a first end connected with said shaft and a second end held in said recess.
Claim 7
Dependent Claim
49 words
The invention as recited in claim 5 wherein said dial has a chamber therein for receiving said wound spring and has a coating of polytetrafluoroethylene on the inner surface thereof engaging said body, and said drum has a coating of polytetrafluoroethylene on the inner surface thereof engaging said wall.
Claim 8
Dependent Claim
56 words
The invention as recited in claim 1 wherein said housing includes a stop projecting outwardly therefrom and said dial has a peripheral groove therein receiving said stop, said groove having first and second spaced ends whereby rotation of said dial is limited by abutment of said stop with said first and second ends of said groove.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |