Evaporative emissions control system for small internal combustion enginesAn evaporative emissions control system (40a, 40b) for small internal combustion engines (28). The system generally includes a charcoal canister (122) and a carburetor (42, 170) with a fuel circuit sh…DRIVE·Dec 21·2 min readFollowF02M25/0809TECUMSEH PRODUCTS CO [US]
Evaporative emissions control system including a charcoal canister for small internal combustion enginesAn evaporative emissions control system for small internal combustion engines (28), including a charcoal canister (70) which is in fluid communication with the air space above the liquid fuel within t…DRIVE·Aug 3·2 min readFollowB60K15/03504TECUMSEH PRODUCTS CO [US]
Overhead cam engine with dry sump lubrication systemThe engine (20) has an engine block that has no further internal passages extending between a camshaft cavity and a crankshaft cavity (91). The engine block includes integrally formed cylinder (22) an…DRIVE·Oct 27·1 min readFollowF01M1/04TECUMSEH PRODUCTS CO [US]
Intake air and carburetor heating arrangements for V-twin enginesA V-twin engine (20) having a crankcase (22) and a pair of cylinders (24) defining a V-space (46) therebetween, wherein the V-space is substantially enclosed, and a carburetor (52) is positioned withi…DRIVE·Oct 13·1 min readFollowF01N5/02TECUMSEH PRODUCTS CO [US]
Modular internal combustion enginesA line of small internal combustion engines (50, 300, 400, 500, 600, 700), including twin cylinder engines (50, 300,400) and single cylinder engines (500, 600, 700). The engines each include a crankca…DRIVE·Oct 13·2 min readFollowF01B1/12TECUMSEH PRODUCTS CO [US]
Hydrostatic transaxle having axial piston motor and method for manufacturing transaxlesA modular hydrostatic transaxle (8) includes an axle module (12) removably connected to a hydrostatic transmission module (10). The axle module includes a differential connected to a reduction gear tr…DRIVE·Aug 4·2 min readFollowB60K17/105TECUMSEH PRODUCTS CO [US]
Automatic priming systemAn automatic priming system (20) for internal combustion engines (22), which is operable at engine cranking speeds and which is automatically disabled at engine running speeds. The automatic priming s…DRIVE·Mar 24·1 min readFollowF02M1/16TECUMSEH PRODUCTS CO [US]
Emissions control system for small internal combustion enginesAn evaporative emissions control system (30a, 30b) for small internal combustion engines (32) includes a control valve (66a, 66b) associated with a fuel line (62) and with a vent line (64) which each …DRIVE·Mar 24·2 min readFollowF02B63/02TECUMSEH PRODUCTS CO [US]
Engine control systemA small internal combustion engine (20) having user interfaces which are located proximate to one another and within a centralized portion of the engine which is easily accessible by a user, such that…DRIVE·Feb 18·1 min readFollowF01B1/12TECUMSEH PRODUCTS CO [US]
Air cleaner assembly for internal combustion enginesAn air cleaner system for small internal combustion engines (20), including a removable or replaceable air cleaner element (72) detachably mounted within an air cleaner cavity (70) which is defined at…DRIVE·Feb 18·1 min readFollowF01B1/12TECUMSEH PRODUCTS CO [US]
Compression release mechanism for internal combustion engineA compression release device (70) for a small internal combustion engine, including a flyweight (102) operatively coupled to a cam member (90) via a cam pivot shaft (100), wherein a lever arm (LA1-LA1…DRIVE·Jan 14·2 min readFollowF01L13/08TECUMSEH PRODUCTS CO [US]
Internal combustion engineA twin cylinder engine (50, 300), includes a pair of cylinder members (74a, 74b) mounted to mounting surfaces (72a and 72b) of a crankcase (52), and cylinder heads (96, 324) mounted to the cylinder me…DRIVE·Oct 29·2 min readFollowF01B1/12TECUMSEH PRODUCTS CO [US]
Reverse lockout feature for a mowerA lawn mower (20) including a frame (23), an engine (22) having an electrical system and attached to the frame, a mower deck assembly (28) connected to the frame and having a rotating blade selectivel…DRIVE·Mar 26·2 min readFollowF16H61/16TECUMSEH PRODUCTS CO [US]
Hydrostatic transmissionA hydrostatic transmission (34, 35) including a variable displacement pump (56) including an input shaft (40) and a pump cylinder barrel rotatably coupled to the input shaft, the pump cylinder barrel …DRIVE·Feb 26·2 min readFollowB60K17/105TECUMSEH PRODUCTS CO [US]
Centerless recoil starterA centerless recoil starter (26) in a small internal combustion engine (14) having a blower housing (28), a flywheel (36), and a crankshaft (38). The centerless recoil starter generally includes an an…DRIVE·Jan 2·1 min readFollowF02B63/02TECUMSEH PRODUCTS CO [US]
Electronically controlled dampener for hydrostatic transmissionA hydrostatic transmission (22) including a fluid motor (84) and a variable displacement fluid pump (86) in fluid communication with the motor and having a first and a second, greater, fluid displacem…DRIVE·Nov 27·2 min readFollowF16H39/04TECUMSEH PRODUCTS CO [US]
Powertrain module for zero turn radius vehicleA powertrain module (14) for a zero turn radius vehicle (10), such as a tractor or mower, the powertrain module generally including a structural member (24) or mounting plate to which an engine (30), …DRIVE·Nov 27·1 min readFollowB60K17/04TECUMSEH PRODUCTS CO [US]
Modular hydrostatic transaxle for zero turn radius mowerA hydrostatic transaxle including first and second hydrostatic transmission modules and an axle drive housing. Each module includes a transmission housing, a rotating fluid pump and a rotatable fluid …DRIVE·Nov 6·1 min readFollowF16H47/02TECUMSEH PRODUCTS CO [US]
Hydrostatic transmission having hydraulic dampening and neutral bleed mechanismA hydrostatic transmission (20) including a fluid motor (24) and a variable displacement fluid pump (22) in fluid communication with the fluid motor and having a first and a second, much greater, flui…DRIVE·Oct 30·2 min readFollowB60K17/105TECUMSEH PRODUCTS CO [US]
Hydrostatic transaxleA hydrostatic transaxle having a hydrostatic transmission module (104) including a transmission housing (110), a rotating fluid pump and a rotatable fluid motor, the pump being of variable displacemen…DRIVE·Oct 23·1 min readFollowB60K17/04TECUMSEH PRODUCTS CO [US]
Disc brake for small utility vehicle transaxleA transaxle (30) for a small utility vehicle or implement, including a casing (32), at least one rotatable shaft (84, 126) disposed in and extending from the casing, at least one brake disc (98) rotat…DRIVE·Oct 16·2 min readFollowF16D55/02TECUMSEH PRODUCTS CO [US]
Mechanical compression and vacuum releaseA centrifugally actuated flyweight member (94) is engaged with the operating member, wherein rotation of the camshaft above engine cranking speeds causes the flyweight member to move the operating mem…DRIVE·Oct 9·1 min readFollowF01L13/08TECUMSEH PRODUCTS CO [US]
Self adjusting wet brake for use with a transmission or transaxleA self adjusting wet brake (100) positioned inside the housing (48, 54, 56) of a transaxle or transmission (30). The self adjusting brake assembly utilizes a brake pad (102) having a ramp surface (134…DRIVE·May 15·1 min readFollowB60K17/105TECUMSEH PRODUCTS CO [US]
Mid cam engineA drive train (11) for an overhead valve engine (10), including a cam gear (106) driven by the crankshaft (12), the cam gear supported for rotation in the cylinder block (32) externally of the cylinde…DRIVE·May 2·2 min readFollowF01L1/024TECUMSEH PRODUCTS CO [US]
Mechanical compression and vacuum releaseAn internal combustion engine (10) having a vacuum release mechanism (70, 70') that includes a centrifugally actuated member (72, 72') movably attached to the camshaft (30, 30') and having a vacuum re…DRIVE·Mar 13·1 min readFollowF01L13/085TECUMSEH PRODUCTS CO [US]
Engine having carburetor with bridge circuitA carburetor (22a) including an airflow passage (34) through which varying amounts of air flows, a variably positioned throttle valve (36) located in the airflow passage, the amount of air flowing thr…DRIVE·Oct 24·2 min readFollowF02M11/00TECUMSEH PRODUCTS CO [US]
