US4027592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propellant charge igniter with striker element
Assignee: Dynamit Nobel AG
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Filing: 1976-02-04
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Granted: 1977-06-07
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Expires: 1996-02-04
Abstract
Abstract The present invention relates to a propellant charge igniter having a striker element with a rearward cylindrical shank portion extending through the bottom piece of the propellant charge igniter, a forward headpiece following the shank portion and having an enlarged outer diameter with respect to the shank portion, the striker element resting on an annular shoulder formed in the bottom piece and being provided with an annular, separable collar held by means of a counter member extending over the headpiece.
Inventors
- 👤 Gunter Hubsch
- 👤 Hellmut Bendler
- 👤 Rudolf Stahlmann
- 👤 Heinz Gawlick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:17
CPC Classifications
F; F42; F42C; F42C19/00; F42C19/08; F42C19/0823; F42C19/0826; F42C1/00; F42C1/02; F42C19/10
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
134 words
A propellant charge igniter having a striker means including a rearward shank portion extending through a bottom piece of the propellant charge igniter, a forward headpiece connected with the shank portion and having an enlarged cross sectional dimension with respect to the shank portion, the striker element means being supported on a shoulder of the bottom piece and further including a separable collar member held by a counter member extending over the headpiece, the separable collar member being constructed as a tear collar member at the headpiece and having a forward and rearward end face, the tear collar member being clamped in a form-fitting manner by contacting at its forward end face the counter member extending over the headpiece and being supported at its rearward end face by the shoulder of the bottom piece.
Claim 2
Dependent Claim
134 words
A propellant charge igniter having a striker means including a rearward shank portion extending through a bottom piece of the propellant charge igniter, a forward headpiece connected with the shank portion and having an enlarged cross sectional dimension with respect to the shank portion, the striker element means being supported on a shoulder of the bottom piece and further including a separable collar member held by a counter member extending over the headpiece, the separable collar member being constructed as a tear collar member at the headpiece and having a forward and rearward end face, the tear collar member being clamped in a form-fitting manner by contacting at its forward end face the counter member extending over the headpiece and being supported at its rearward end face by the shoulder of the bottom piece.
Claim 3
Dependent Claim
47 words
A propellant charge igniter according to claim 1, wherein one of the headpiece and the shank portion are provided with a larger outer cross sectional dimension at the forward end face of the tear collar member than at the rearward end face of the tear collar member.
Claim 4
Dependent Claim
23 words
A propellant charge igniter according to claim 2, wherein the tear collar member terminates flush with the rearward end face of the headpiece.
Claim 5
Dependent Claim
31 words
A propellant charge igniter according to claim 1, further comprising a sealing means disposed between the shoulder of the bottom piece and the rearward end face of the tear collar member.
Claim 6
Dependent Claim
17 words
A propellant charge igniter according to claim 4, wherein the sealing means is an annular sealing element.
Claim 7
Dependent Claim
42 words
A propellant charge igniter according to claim 1, wherein the propellant charge igniter is provided with a sleeve member, and further comprising a spacer member inserted in the sleeve member and disposed for biasing the counter member against the tear collar member.
Claim 8
Dependent Claim
27 words
A propellant charge igniter according to claim 6, wherein the spacer member is threadedly connected with the sleeve member and is arranged for receiving a primer element.
Claim 9
Dependent Claim
53 words
A propellant charge igniter according to claim 7, wherein the striker means includes a forward striker portion connected with the headpiece, the striker portion extending in a bore of the counter member for movement therein and proximate to an end face of the primer element disposed in a recess of the spacer member.
Claim 10
Dependent Claim
30 words
A propellant charge igniter according to claim 8, wherein the bore of the counter member has a cross sectional dimension smaller than the cross sectional dimension of the primer element.
Claim 11
Dependent Claim
29 words
A propellant charge igniter according to claim 9, wherein the spacer member is provided with a flash bore therethrough and the sleeve member is integral with the bottom piece.
Claim 12
Dependent Claim
41 words
A propellant charge igniter according to claim 1, wherein the shank portion and headpiece are cylindrical, the shoulder of the bottom piece and the tear collar member are annular, and the counter member extends over the headpiece with radial play therebetween.
Claim 13
Dependent Claim
36 words
A propellant charge igniter according to claim 11, wherein the counter member is provided with a recess for receiving the headpiece, the recess having an enlarged diameter with respect to the outer diameter of the headpiece.
Claim 14
Dependent Claim
47 words
A propellant charge igniter according to claim 12, wherein one of the headpiece and the shank portion are provided with a larger outer cross sectional dimension at the forward end face of the tear collar member than at the rearward end face of the tear collar member.
Claim 15
Dependent Claim
31 words
A propellant charge igniter according to claim 13, further comprising a sealing means disposed between the shoulder of the bottom piece and the rearward end face of the tear collar member.
Claim 16
Dependent Claim
42 words
A propellant charge igniter according to claim 13, wherein the propellant charge igniter is provided with a sleeve member, and further comprising a spacer member inserted in the sleeve member and disposed for biasing the counter member against the tear collar member.
Claim 17
Dependent Claim
23 words
A propellant charge igniter according to claim 13, wherein the tear collar member terminates flush with the rearward end face of the headpiece.
Claim 18
Dependent Claim
31 words
A propellant charge igniter according to claim 16, further comprising a sealing means disposed between the shoulder of the bottom piece and the rearward end face of the tear collar member.
Claim 19
Dependent Claim
17 words
A propellant charge igniter according to claim 17, wherein the sealing means is an annular sealing element.
Claim 20
Dependent Claim
42 words
A propellant charge igniter according to claim 18, wherein the propellant charge igniter is provided with a sleeve member, and further comprising a spacer member inserted in the sleeve member and disposed for biasing the counter member against the tear collar member.
Claim 21
Dependent Claim
27 words
A propellant charge igniter according to claim 19, wherein the spacer member is threadedly connected with the sleeve member and is arranged for receiving a primer element.
Claim 22
Dependent Claim
53 words
A propellant charge igniter according to claim 20, wherein the striker means includes a forward striker portion connected with the headpiece, the striker portion extending in a bore of the counter member for movement therein and proximate to an end face of the primer element disposed in a recess of the spacer member.
Claim 23
Dependent Claim
30 words
A propellant charge igniter according to claim 21, wherein the bore of the counter member has a cross sectional dimension smaller than the cross sectional dimension of the primer element.
Claim 24
Dependent Claim
29 words
A propellant charge igniter according to claim 22, wherein the spacer member is provided with a flash bore therethrough and the sleeve member is integral with the bottom piece.
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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |