Mechanical inertial igniters for reserve batteries and the like for munitions
US-10234254-B2 · Mar 19, 2019 · US
Shear-based inertia igniters with preset no-fire protection for munitions and the like
US10458769B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10458769-B2 |
| Application number | US-201815934973-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 24, 2018 |
| Priority date | Mar 26, 2017 |
| Publication date | Oct 29, 2019 |
| Grant date | Oct 29, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An inertial igniter for igniting a thermal battery upon a predetermined acceleration event. The inertial igniter including: a base having a first projection; a striker mass rotatably connected to the base through a rotatable connection, the base having a second projection aligned with the first projection such that when the striker mass is rotated towards the base, the first projection impacts the second projection; a rotation prevention mechanism for preventing impact of the first and second projections unless the predetermined acceleration event is experienced; and a spring for biasing the striker mass in a biasing direction away from the base, the spring being disposed between a portion of the striker mass and a portion of the rotation prevention mechanism.
First claim
Opening claim text (preview).
What is claimed is: 1. An inertial igniter for igniting a thermal battery upon a predetermined acceleration event, the inertial igniter comprising: a base having a first projection; a striker mass rotatably connected to the base through a rotatable connection, the striker mass having a second projection aligned with the first projection such that when the striker mass is rotated towards the base, the first projection impacts the second projection; a rotation prevention mechanism for preventing impact of the first and second projections unless the predetermined acceleration event is experienced; and a spring, separate from the rotation prevention mechanism, for biasing the striker mass in a biasing direction away from the base, the spring being disposed between a portion of the striker mass and a portion of the rotation prevention mechanism. 2. The inertial igniter of claim 1 , wherein the rotation prevention mechanism comprises a restriction member for restricting rotation of the sticker mass, the restriction member being disposed directly or indirectly between the striker mass and the base. 3. The inertial igniter of claim 2 , wherein the restriction member has a weakened portion which fails upon the predetermined acceleration event thereby allowing the striker mass to rotate towards the base. 4. The inertial igniter of claim 3 , wherein the restriction member is configured to fail in shear and the weakened portion is a reduced cross-sectional portion. 5. The inertial igniter of claim 3 , wherein the restriction member is configured to fail in tension and the weakened portion is a reduced cross-sectional portion. 6. The inertial igniter of claim 1 , further comprising a stop for limiting the movement of the striker mass in the biasing direction.
Assignees
Inventors
Classifications
- F42C15/24Primary
wherein the safety or arming action is effected by inertia means (F42C15/196, F42C15/20 take precedence) · CPC title
operating by inertia of members on impact · CPC title
Primers or igniters for the initiation or the explosive charge in a warhead (F42C19/095 takes precedence) · CPC title
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- What does patent US10458769B2 cover?
- An inertial igniter for igniting a thermal battery upon a predetermined acceleration event. The inertial igniter including: a base having a first projection; a striker mass rotatably connected to the base through a rotatable connection, the base having a second projection aligned with the first projection such that when the striker mass is rotated towards the base, the first projection impacts …
- Who is the assignee on this patent?
- Rastegar Jahangir S, Omnitek Partners L L C
- What technology area does this patent fall under?
- Primary CPC classification F42C15/24. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 29 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).