Manually operable piezoelectric gas igniter

Claim 2

Manual gas igniter as claimed in claim 1 wherein said piezoelectric means include an anvil, a striker pin, and a piezoelectric element between said anvil and said striker pin; and wherein said striker means include a striker hammer and a striker spring biassing the same, said striker hammer being biassed to said released position by said striker spring, and striking said striker pin in said released position under the action of said striker spring.

Claim 3

Manual gas igniter as claimed in claim 1 wherein said trigger means includes a finger-engaging part and a coupling part resiliently connected with said finger-engaging part, said couPling part in said coupling position engaging said striker means in said released position and during movement to said cocked position; and wherein said actuating means includes camming means mounted in said casing means and engaging said coupling part in said cocking position of said trigger means for moving said coupling part out of engagement with said striker means so that the latter moves to said released position and strikes said piezoelectric means.

Claim 4

Manual gas igniter as claimed in claim 4 wherein said striker means include a spring-biased striker hammer movable between said cocked retracted position and said released position for striking said piezoelectric means; wherein said striker hammer has a lateral coupling projection; comprising a housing mounted in said casing means enveloping said piezoelectric means and said striker means and having a slot through which said lateral coupling projection projects into the path of movement of said coupling part of said trigger means; and wherein said housing has a portion constituting said camming means and located in said path of movement of said coupling part.

Claim 5

Manual gas igniter as claimed in claim 4 wherein said casing parts are symmetrical casing halves and are substantially pistol shaped; wherein said housing is mounted in one of said casing halves; wherein said trigger means is mounted on the other casing half; and wherein said path of movement of said coupling part of said trigger means is parallel to the path of movement of said striker hammer between said released and said cocked retracted position; and wherein said camming portion of said housing displaces said coupling part of said trigger means in said cocking position transverse to said paths for releasing said coupling projection of said striker hammer.

Claim 6

Manual gas igniter as claimed in claim 6 wherein said trigger means is integral and said coupling part is a resilient arm integrally connected with said finger-engaging portion, said arm having a free hook end portion cooperating with said lateral coupling projection of said striker hammer.

Claim 7

Manual gas igniter as claimed in claim 1 wherein said casing parts are substantially pistol-shaped hollow symmetrical halves; wherein said piezoelectric means and said striker means are mounted in one of said casing halves; and wherein the other casing half has guide means slidably supporting said trigger means for movement between said positions of the same along a path parallel to the direction of movement of said striker means between said released and cocked retracted positions.

Claim 8

Manual gas igniter as claimed in claim 1 wherein said casing halves are substantially pistol-shaped symmetrical halves having rims abutting each other, comprising a barrel clamped at one end between said casing halves and having insulating means at the other free end thereof for supporting said igniting electrode; a conductor passing through said barrel and connecting said electrode with said piezoelectric means; and wherein said casing halves form an opening through which said trigger means partly project out of said casing means.

Claim 9

Manual gas igniter as claimed in claim 9 comprising a housing enveloping said piezoelectric means and said striker means; wherein said piezoelectric means include an anvil supported on said housing and a piezoelectric element mounted on said anvil between the same and said striker means; wherein said striker means include a coupling projection projecting from said housing and cooperating with said trigger means; and wherein said conductor connects said piezoelectric element with said igniting electrode.