Combustion-powered tool with flexible silicone control check valve operable between a primary combustion chamber and a secondary combustion chamber
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-019/02
F02B-063/02
F01B-011/04
출원번호
US-0311227
(2014-06-20)
등록번호
US-9638092
(2017-05-02)
발명자
/ 주소
Adams, Joseph S.
출원인 / 주소
Adams, Joseph S.
대리인 / 주소
Law Offices of Steven W. Weinrieb
인용정보
피인용 횟수 :
0인용 특허 :
12
초록▼
A combustion-powered tool comprises a primary combustion chamber, a secondary combustion chamber, and a working piston that is in fluidic connection with the secondary combustion chamber so as to be exposed to the pressures developed within the secondary combustion chamber, when combustion takes pla
A combustion-powered tool comprises a primary combustion chamber, a secondary combustion chamber, and a working piston that is in fluidic connection with the secondary combustion chamber so as to be exposed to the pressures developed within the secondary combustion chamber, when combustion takes place within the secondary combustion chamber, such that the working piston can be driven through its working or power stroke. A flexible silicone rubber plate-type control check valve is interposed between the primary combustion chamber and the secondary combustion chamber so as to control the flow of combustion products from the primary combustion chamber into the secondary combustion chamber and yet prevent the flow of combustion products from the secondary combustion chamber back into the primary combustion chamber, when combustion occurs within the secondary combustion chamber, such that the pressures developed within the secondary combustion chamber, as a result of the combustion of the air/fuel mixture within the secondary combustion chamber, can in fact act upon the working piston so as to drive the same through its working or power stroke.
대표청구항▼
1. A combustion-powered tool, comprising: a first primary combustion chamber having an air/fuel mixture disposed therein for combustion;a second secondary combustion chamber having an air/fuel mixture disposed therein for combustion;an ignition device disposed within said first primary combustion ch
1. A combustion-powered tool, comprising: a first primary combustion chamber having an air/fuel mixture disposed therein for combustion;a second secondary combustion chamber having an air/fuel mixture disposed therein for combustion;an ignition device disposed within said first primary combustion chamber for initiating combustion of said air/fuel mixture disposed within said first primary combustion chamber;a working/power piston exposed to said second secondary combustion chamber so as to undergo a power working stroke when combustion of said air/fuel mixture disposed within said second secondary combustion chamber occurs;an intake valve operatively associated with said first primary combustion chamber;an exhaust valve operatively associated with said second secondary combustion chamber;a tie rod operatively interconnecting said intake and exhaust valves together; anda flexible silicone rubber plate-type control check valve, interposed between said first primary combustion chamber and said second secondary combustion chamber and operatively mounted upon said tie rod for operatively cooperating with valve seat structure defined between said first primary combustion chamber and said second secondary combustion chamber, for opening fluid flow passages around peripheral edge portions of said flexible silicone rubber plate-type control check valve between said first primary and second secondary combustion chambers when said flexible silicone rubber plate-type check valve has been unseated from said valve seat structure as a result of combustion of said air/fuel mixture disposed within said first primary combustion chamber so as to permit a flame front from said first primary combustion chamber to pass into said second secondary combustion chamber in order to initiate combustion of said air/fuel mixture disposed within said second secondary combustion chamber, and for returning to said valve seat structure when combustion of said air/fuel mixture disposed within said second secondary combustion chamber occurs such that pressure forces can be impressed upon said working/power piston. 2. The combustion-powered tool as set forth in claim 1, further comprising: a cylindrical roller operatively engaged with said flexible silicone rubber plate-type check valve. 3. The combustion-powered tool as set forth in claim 2, wherein: said cylindrical roller is operatively engaged with a surface portion of said flexible silicone rubber plate-type check valve which faces into or is exposed to the interior of said second secondary combustion chamber. 4. The combustion-powered tool as set forth in claim 3, wherein: said cylindrical roller is operatively engaged with a surface portion of said flexible silicone rubber plate-type check valve which faces into or is exposed to the interior of said second secondary combustion chamber such that when upper and lower peripheral edge portions of said flexible silicone rubber plate-type check valve are unseated from said valve structure so as to open said fluid flow passages, said upper and lower peripheral edge portions of said flexible silicone rubber plate-type check valve form arcuately curved sections around said cylindrical roller. 5. The combustion-powered tool as set forth in claim 1, wherein: said intake valve operatively associated with said first primary combustion chamber is movable between open and closed positions with respect to said first primary combustion chamber for permitting a fresh charge of an air/fuel mixture to be ingested into said first primary combustion chamber when said intake valve is disposed at said open position, and for permitting combustion of said air/fuel mixture within said first primary combustion chamber when said intake valve is disposed at said closed position; andsaid exhaust valve operatively associated with said second secondary combustion chamber is movable between open and closed positions for permitting combustion products to be exhausted out from said second secondary combustion chamber when said exhaust valve is disposed at said open position, and for permitting combustion of said air/fuel mixture, disposed within said second secondary combustion chamber, to occur when said exhaust valve is disposed at said closed position. 6. The combustion-powered tool as set forth in claim 5, further comprising: a linear actuator for moving said intake and exhaust valves between said open and closed positions. 7. The combustion-powered tool as set forth in claim 5, wherein: said flexible silicone rubber plate-type control check valve and said cylindrical roller are operatively connected to said intake and exhaust valves; andsaid linear actuator moves said flexible silicone rubber plate-type control check valve and said cylindrical roller along with said intake and exhaust valves such that when said intake and exhaust valves are moved to said open positions, said flexible silicone rubber plate-type control check valve is moved away and unseated from said valve seat structure, and when said linear actuator moves said intake and exhaust valves to their closed positions, said flexible silicone rubber plate-type control check valve is moved toward and seated upon said valve seat structure. 8. The combustion-powered tool as set forth in claim 1, further comprising: a fuel injector for injecting a flow of fuel toward said first primary combustion chamber; anda jet pump operatively associated with said fuel injector such that ambient air can be entrained into said flow of fuel from said fuel injector and thereby form an air/fuel mixture to be ingested into said first primary combustion chamber. 9. The combustion-powered tool as set forth in claim 1, further comprising: a working/power cylinder within which said working/power piston is operatively disposed. 10. The combustion-powered tool as set forth in claim 9, wherein: said first primary combustion chamber and said second secondary combustion chambers are defined around a first axis; andsaid working/power cylinder is defined around a second axis which is perpendicular to said first axis. 11. The combustion-powered tool as set forth in claim 9, further comprising: an exhaust valve disposed within a lower region of said working/power cylinder for permitting air, disposed beneath said working/power piston, to be exhausted from said working/power cylinder as said working/power piston undergoes a working/power stroke.
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