Patent US3853062A successfully refreshed from Google Patents.
US3853062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for measuring distance of travel by a projectile
Assignee: United States Department of the Army
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Filing: 1973-02-28
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Granted: 1974-12-10
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Expires: 1993-02-28
Abstract
Abstract The distance traversed by a spin-stabilized projectile is determined by a pendulum attached inside the fuze of the projectile so that each complete swing of the pendulum is equal or proportional to one complete revolution of the spinning shell. The distance traversed by the projectile is determined from reading of the number of complete cycles (frequency) made by the pendulum which, in turn, is equal to the number of revolutions of the spinning shell.
Inventors
- 👤 L Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:19
CPC Classifications
F; F42; F42C; F42C9/00; F42C9/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
A device for determining the distance traversed by a spinstabilized projectile having a spinning shell, which device comprises, in combination, a fuze element coaxially mounted in said projectile, pendulum means attached to said fuze element and adapted to oscillate therein in response to the centrifugal force generated by said spinning shell so that the frequency of cycles of said pendulum means is proportional to the revolutions of said spinning shell of said projectile, and means for determining the frequency of oscillation of said pendulum means.
Claim 2
Independent Claim
85 words
A device for determining the distance traversed by a spinstabilized projectile having a spinning shell, which device comprises, in combination, a fuze element coaxially mounted in said projectile, pendulum means attached to said fuze element and adapted to oscillate therein in response to the centrifugal force generated by said spinning shell so that the frequency of cycles of said pendulum means is proportional to the revolutions of said spinning shell of said projectile, and means for determining the frequency of oscillation of said pendulum means.
Claim 3
Dependent Claim
39 words
A device as in claim 1 wherein said pendulum comprises a swing-arm having two ends, one end being pivotably attached to the center of said fuze element and the other end being attached to a disc- or ball-like object.
Claim 4
Dependent Claim
35 words
associating said pendulum means with a counting means for determining the frequency of oscillation of said pendulum means and adapted to activate said fuze element at a predetermined number of oscillations of said pendulum means;
Claim 5
Dependent Claim
35 words
associating said pendulum means with a counting means for determining the frequency of oscillation of said pendulum means and adapted to activate said fuze element at a predetermined number of oscillations of said pendulum means;
Claim 6
Dependent Claim
9 words
connecting said counting means to a setting means; and
Claim 7
Dependent Claim
9 words
connecting said counting means to a setting means; and
Claim 8
Dependent Claim
23 words
A device as in claim 1 wherein the means for determining the frequency of oscillation of said pendulum means comprises a photoelectric cell.
Claim 9
Dependent Claim
25 words
A device as in claim 1, wherein the means for determining the frequency of oscillation of said pendulum means comprises a ratchet or escape wheel.
Claim 10
Dependent Claim
31 words
adjusting the setting means to cause activation of said fuze element at a predetermined number of oscillations of said pendulum means corresponding to the preset distance of traverse of said projectile.
Claim 11
Dependent Claim
31 words
adjusting the setting means to cause activation of said fuze element at a predetermined number of oscillations of said pendulum means corresponding to the preset distance of traverse of said projectile.
Claim 12
Dependent Claim
14 words
A device as in claim 1, wherein the pendulum is a double ended pendulum.
Claim 13
Independent Claim
23 words
A method for presetting the distance of traverse of a spin-stabilized projectile having a spinning shell and a fuze element which method comprises:
Claim 14
Independent Claim
23 words
A method for presetting the distance of traverse of a spin-stabilized projectile having a spinning shell and a fuze element which method comprises:
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |