US3779128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mortar with electro-magnetic retaining coil
Assignee: Individual
•
Filing: 1972-04-25
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Granted: 1973-12-18
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Expires: 1992-04-25
Abstract
Abstract A mortar or short barrel weapon including a rifled barrel for propelling and rotating a projectile. The base plate, supports, and sighting components are conventional. This invention pertains to a newly improved design for a projectile for use in combination with a mortar barrel including an electro-magnetic retention means designed to momentarily restrain the projectile in the breech of the barrel promoting burning of the propelling charge while momentarily retaining the projectile resulting in increased pressures, muzzle velocity and range. The magnetic retention means comprises a retaining coil or coils selectively activated and deactivated by a control circuit comprising switches, coils, and conductors. An alternative mechanical retaining means is suggested utilizing retaining pins employing mechanical, hydraulic, or electro-magnetic control means.
Inventors
- 👤 P Pelaez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:13
CPC Classifications
F; F41; F41F; F41F3/00; F41F3/04; F41F3/052; F41F3/048
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
103 words
A mortar and projectile system comprising: a. a mortar barrel having a breech end and a muzzle end, b. a projectile constructed and arranged to be propelled from said mortar barrel, c. a propelling charge in association with said projectile, said charge being adapted to propell said projectile from said barrel when said charge is ignited, d. means for igniting said propelling charge adjacent the breech end of said mortar barrel, and e. a magnet restraining means for temporarily restraining the said projectile as the burning of said propelling charge is initiated and until generated pressures of propellant combustion overcomes said restraining means.
Claim 2
Dependent Claim
103 words
A mortar and projectile system comprising: a. a mortar barrel having a breech end and a muzzle end, b. a projectile constructed and arranged to be propelled from said mortar barrel, c. a propelling charge in association with said projectile, said charge being adapted to propell said projectile from said barrel when said charge is ignited, d. means for igniting said propelling charge adjacent the breech end of said mortar barrel, and e. a magnet restraining means for temporarily restraining the said projectile as the burning of said propelling charge is initiated and until generated pressures of propellant combustion overcomes said restraining means.
Claim 3
Dependent Claim
12 words
The invention of claim 1 wherein said restraining means is an electro-magnet.
Claim 4
Dependent Claim
21 words
a restraining pin secured to said mortar barrel, said restraining pin adapted to contact and selectively engage and retain said projectile,
Claim 5
Dependent Claim
21 words
a restraining pin secured to said mortar barrel, said restraining pin adapted to contact and selectively engage and retain said projectile,
Claim 6
Dependent Claim
21 words
a restraining pin secured to said mortar barrel, said restraining pin adapted to contact and selectively engage and retain said projectile,
Claim 7
Dependent Claim
21 words
a restraining pin secured to said mortar barrel, said restraining pin adapted to contact and selectively engage and retain said projectile,
Claim 8
Dependent Claim
23 words
a hydraulic pin withdrawal linkage positioned adjacent said breech of said mortar being in a position to engage and release a projectile, and
Claim 9
Dependent Claim
23 words
a hydraulic pin withdrawal linkage positioned adjacent said breech of said mortar being in a position to engage and release a projectile, and
Claim 10
Dependent Claim
23 words
an electro-magnetic pin withdrawal linkage positioned adjacent said breech of said mortar being in a position to engage and release a projectile, and
Claim 11
Dependent Claim
23 words
an electro-magnetic pin withdrawal linkage positioned adjacent said breech of said mortar being in a position to engage and release a projectile, and
Claim 12
Dependent Claim
41 words
The invention of claim 1 further comprising: a. lands and grooves constructed in said mortar barrel, b. a rotating band constructed integral with said projectile, said rotating band constructed and arranged to engage said lands and grooves and rotate said projectile.
Claim 13
Dependent Claim
57 words
The invention of claim 1 further comprising: a. a magnetic core mounted in the breech of said mortar barrel, b. a malleable rotating band secured to said projectile, c. said magnetic core and said malleable rotating band compatibly constructed and arranged to compress and expand said malleable rotating band upon firm contact with the said magnetic core.
Claim 14
Dependent Claim
30 words
conductor means operably interconnecting said propulsion pressure sensor and said electro-magnetic pin withdrawal means constructed and arranged to withdraw said restraining pin responsive to the propulsion pressure in said breech.
Claim 15
Dependent Claim
30 words
conductor means operably interconnecting said propulsion pressure sensor and said electro-magnetic pin withdrawal means constructed and arranged to withdraw said restraining pin responsive to the propulsion pressure in said breech.
Claim 16
Dependent Claim
29 words
hydraulic means operably interconnecting said propulsion pressure sensor and said hydraulic pin withdrawal linkage constructed and arranged to withdraw said restraining pin responsive to propulsion pressure in said breech.
Claim 17
Dependent Claim
29 words
hydraulic means operably interconnecting said propulsion pressure sensor and said hydraulic pin withdrawal linkage constructed and arranged to withdraw said restraining pin responsive to propulsion pressure in said breech.
Claim 18
Dependent Claim
51 words
The invention of claim 1 further comprising: a. a first retention coil secured adjacent the breech of said mortar barrel, b. a source of direct current of adequate potential to activate and magnetize said first retention coil, and c. conductor means interconnecting said direct current source and said first retention coil.
Claim 19
Dependent Claim
30 words
The invention of claim 5 further comprising a second retention coil, said conductor means adapted to selectively activate said first and said second retention coils for a maximum retention force.
Claim 20
Dependent Claim
107 words
A mortar and projectile system comprising: a. a mortar barrel having a breech end and a muzzle end, b. a projectile constructed and arranged to be propelled from said mortar barrel, c. a propelling charge in association with said projectile, said charge being adapted to propell said projectile from said breech when said charge is ignited, d. means for igniting said propelling charge adjacent the breech end of said mortar, e. mechanical restraining means for temporarily restraining said projectile as the burning of said propelling charge is instituted and until generated pressures of propelling charge oVercome said mechanical restraining means, f. said mechanical restraining means further comprising:
Claim 21
Dependent Claim
107 words
A mortar and projectile system comprising: a. a mortar barrel having a breech end and a muzzle end, b. a projectile constructed and arranged to be propelled from said mortar barrel, c. a propelling charge in association with said projectile, said charge being adapted to propell said projectile from said breech when said charge is ignited, d. means for igniting said propelling charge adjacent the breech end of said mortar, e. mechanical restraining means for temporarily restraining said projectile as the burning of said propelling charge is instituted and until generated pressures of propelling charge oVercome said mechanical restraining means, f. said mechanical restraining means further comprising:
Claim 22
Dependent Claim
107 words
A mortar and projectile system comprising: a. a mortar barrel having a breech end and a muzzle end, b. a projectile constructed and arranged to be propelled from said mortar barrel, c. a propelling charge in association with said projectile, said charge being adapted to propell said projectile from said breech when said charge is ignited, d. means for igniting said propelling charge adjacent the breech end of sair mortar, e. mechanical restraining means for temporarily restraining said projectile as the burning of said propelling charge is instituted and until generated pressures of propelling charge overcome said mechanical restraining means, f. wherein said mechanical restraining means comprises:
Claim 23
Dependent Claim
107 words
A mortar and projectile system comprising: a. a mortar barrel having a breech end and a muzzle end, b. a projectile constructed and arranged to be propelled from said mortar barrel, c. a propelling charge in association with said projectile, said charge being adapted to propell said projectile from said breech when said charge is ignited, d. means for igniting said propelling charge adjacent the breech end of sair mortar, e. mechanical restraining means for temporarily restraining said projectile as the burning of said propelling charge is instituted and until generated pressures of propelling charge overcome said mechanical restraining means, f. wherein said mechanical restraining means comprises:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |