公开(公告)号：US07104253B1

公开(公告)日：2006-09-12

申请号：US11093357

申请日：2005-03-30

Applicant: Paul J. Dow ,  David D. Hacker

Inventor： Paul J. Dow ,  David D. Hacker

IPC: F02D9/02

CPC classification number: F02B25/22 ,  F02B2075/025 ,  F02D2009/0261 ,  F02M23/03 ,  Y02T10/146

Abstract: In one presently preferred embodiment a stratified scavenging carburetor has a scavenging air passage with an air control valve and a fuel and air mixing passage with a throttle control valve, and a lost motion coupling associated with the valves to delay opening of the closed air valve until the throttle valve has partially opened from its idle position to an off idle position and preferably thereafter to open the air valve in phased relationship with the throttle valve so that the valves become wide open at substantially the same time. Preferably the coupling has reels associated with the valve and connected by a flexible cord.

Abstract translation: 在一个目前优选的实施方案中，分层扫气化油器具有清扫空气通道，其具有空气控制阀和具有节气门控制阀的燃料和空气混合通道以及与阀相关的空转联轴器以延迟关闭空气阀的打开，直到 节流阀已经从其怠速位置部分地打开到脱开的怠速位置，并且优选地随后打开与节流阀定相关系的空气阀，使得阀在基本上同时变宽。 优选地，联接器具有与阀相关联的卷轴并通过柔性绳连接。

公开(公告)号：US07172178B1

公开(公告)日：2007-02-06

申请号：US10996962

申请日：2004-11-24

Applicant: David D. Hacker

Inventor： David D. Hacker

IPC: F02M7/08

CPC classification number: F02M7/08

Abstract: A combustion engine carburetor with a fuel-and-air mixing passage extending through a body and a float bowl engaged sealably to the body. A vacuum actuated acceleration fuel pump is preferably carried by the float bowl and has a hose-less vacuum channel communicating between the fuel-and-air mixing passage downstream of a throttle valve and a vacuum chamber of the acceleration pump. A hose-less fuel discharge channel communicates between a supplemental fuel chamber of the acceleration pump and the fuel-and-air mixing passage between a venturi and a choke valve in the mixing passage. Preferably, the fuel discharge channel has an injecting bore portion defined by the body and being angled to direct fuel in a downstream direction toward the venturi to promote mixing with air.

Abstract translation: 具有延伸穿过主体的燃料和空气混合通道的燃烧发动机化油器和可密封地接合到主体的浮球。 真空致动的加速燃料泵优选地由浮筒携带，并且具有在节气门下游的燃料和空气混合通道与加速泵的真空室之间连通的无软管真空通道。 无胶管燃料排放通道在加速泵的辅助燃料室与混合通道中的文氏管和阻流阀之间的燃料和空气混合通道之间连通。 优选地，燃料排放通道具有由主体限定的注入孔部分并且成角度以将燃料沿下游方向引向文丘里管以促进与空气的混合。

公开(公告)号：US5984281A

公开(公告)日：1999-11-16

申请号：US986735

申请日：1997-12-08

Applicant: David D. Hacker ,  Eric L. King ,  George M. Pattullo

Inventor： David D. Hacker ,  Eric L. King ,  George M. Pattullo

IPC: F02B63/02 ,  F02B75/02 ,  F02M3/08 ,  F02M3/10 ,  F02M19/04 ,  F16B21/07 ,  F16B35/06

CPC classification number: F02M3/08 ,  F02B63/02 ,  F02M19/04 ,  F02M3/10 ,  F16B21/075 ,  F16B21/078 ,  F02B2075/025 ,  F02M2003/105 ,  F05C2201/021 ,  F16B35/06 ,  Y10S261/38 ,  Y10S261/84 ,  Y10T137/7062

Abstract: Improvement in peanut clip limiter cap holder, wherein the clip spring legs are interconnected by a spring web that flexes to accommodate flexing of the clip legs free ends during insertion of the associated limiter caps into the retaining clip, and prolongs the effective friction grip service life of the clip. Optional detent dimples on the clip spring legs and cooperative limiter cap grooves enhance yieldable retention of the caps in the clip and the clip on the needle valves. When the peanut clip is used to install only a single limiter cap on a single needle valve, a dummy stud is mounted to the carburetor in the vacant needle valve position and the stud head occupies the vacant limiter cap position in the clip. An improved needle valve is made as an assembly of a lathe-turned tip/shank part and a separate precision die cast head part. The head part has the needle spring stop flange, the fluted spline portion, the limiter cap barb retention structure, and a cavity telescopically receiving a shank stem to rotationally drive couple the shank and head parts in assembly. The shank stem is press fit or cast into the head cavity to permanently join the shank and head parts in fixed relationship, or preferably the head cavity cooperates with the shank stem and a cross arm thereof to form a releasable, telescopic, quarter-turn bayonet coupling. The needle valve spring biases the bayonet coupling to fully locked condition. Coupling axial lost motion insures lock-on of cap retention barbs on the head of the "shorter" needle, and thus final installation lock-on of both limiter caps while being held by the clip. "Side-play" between head and shank parts isolates the needle shank part from adverse needle bending moments.

Abstract translation: 改进花生夹限制帽盖架，其中夹子弹簧腿通过弹簧腹板相互连接，该弹簧腹板在将相关的限制器帽插入保持夹中时弯曲以适应夹腿自由端的弯曲，并延长有效的摩擦夹具使用寿命 的剪辑。 夹子弹簧腿和协调限制器盖槽上的可选制动凹坑增加了夹子中的帽和针阀上的夹子的可屈服保持力。 当花生夹用于在单个针阀上安装单个限制器盖时，在空针阀位置将虚拟螺柱安装到化油器上，并且螺柱头部占据夹子中的空位限位器盖位置。 改进的针阀作为车床转动尖端/柄部件和单独的精密压铸头部件的组件制成。 头部具有针簧弹簧止动法兰，槽纹花键部分，限制帽倒钩保持结构，以及可伸缩地容纳柄柄的腔，以在组装中旋转地驱动柄和头部。 柄杆被压配合或铸造到头部腔中，以固定的关系永久地连接柄部和头部部分，或者优选地，头部空腔与柄杆和其横臂配合以形成可释放的，伸缩的四分之一转弯卡口 耦合。 针阀弹簧将卡口式联轴器偏压到完全锁定状态。 耦合轴向运动保证帽子保持倒钩在“较短”针头上的锁定，从而最终安装锁定两个限制帽，同时夹子夹持。 头部和柄部之间的“侧面游戏”将针柄部分与不利的针弯矩隔离开。