Abstract: A compressor running gear and method for assembling the running gear. The running gear includes a split housing having a first housing portion having a first wall and a second wall. Each wall includes at least one shoulder and a shroud. The split housing also includes a second housing portion adapted to be mated with the first housing portion, the first and second housing portions together define a housing chamber. The running gear also includes a crank assembly located in the housing chamber. The crank assembly includes first and second bearing carriers which are mounted on a crankshaft. Each of the bearing carriers has at least one arm adapted to be seated on the at least one shoulder.

Abstract: A flexible oil pan assembly of a flexible internal combustion engine has a plurality of spaced apart flexible baffles disposed between and connected to a first surface of first and second spaced apart side walls and a plurality of stiffening ribs connected to a second surface of the first and second side walls at preselected spaced locations. The combination of the baffles and stiffening ribs facilitates controlled deflection of the first and second side walls and reduces the potential for cracking of the first and second side walls.

Abstract: Several embodiments of crankcase assemblies for internal combustion engines, wherein the crankcase is configured in such a way as to avoid the loss of oil at the pick-up device, even during sudden maneuvering. This is accomplished in such a way so that the oil will not contact the moving components within the crankcase during normal engine operations so as to avoid churning. In addition, the crankcase is configured in such a way as to provide a plurality of air gaps defined by facing surfaces of the crankcase member so as to provide sound deadening and higher strength with a lighter weight material.

Abstract: The invention relates to an acoustically uncoupled valve cover for internal combustion engines with a flexible plastic seal as seal material and connecting elements with disc springs which acoustically uncouple the valve cover from the engine housing.

Abstract: An oil pan has a partition for regulating the transverse movement of oil and baffle plates for regulating the vertical movement of oil. The oil pan is divided into an oil pan upper portion and an oil pan lower portion, the oil pan upper portion is formed with a lower portion attaching face on the lower face of an upper-side bottom, a partition for partitioning the oil level is formed by raising a part of the upper-side bottom surrounded by the lower portion attaching face, a first oil chamber is provided on one side of the partition and a second oil chamber is provided on the other side of the partition, attaching bosses are formed at the upper part of the partition to install an upper portion baffle plate, and air holes are formed at the upper part of the partition close to the attaching bosses to provide communication between the first oil chamber and the second oil chamber.

Abstract: A cooling and lubricating system for an internal combustion engine wherein an oil cooler and oil filter are mounted at a lower portion of the cylinder block in a recess formed by the crankcase member to provide a compact assembly and wherein the oil filter is readily accessible. All of the passages for supplying lubricant and coolant to and from the oil cooler and oil filter are formed integrally in the body of the engine so as to avoid the use of external conduits.

Abstract: A timing chain cover which is mounted to an engine block having an opening in general axial alignment with an exposed end of a camshaft. A cap is mounted to the cover and generally seated in the opening. The cap includes a hole in general axial alignment with the camshaft and an adjustable button is secured in the hole. One end of the button engages the camshaft to prevent cam walk and opposed end is accessible for adjustment without removal of the cover from the engine block.

Abstract: A cover of polymeric material developed substantially in cup shape is disclosed. The bottom of the cover has stiffening ribs on its inner side. The stiffening ribs are developed as a cross bracing, the cross bracing being interrupted at least in part by gaps, the stiffening ribs being connected to each other by a secondary connecting element spanning the gaps.

Abstract: A plastic valve cover, having an inner shell for use with an internal combustion engine. The inner shell provides a first noise shield while the valve cover body and a cap define a second noise shield.

Abstract: An engine compartment casing element (1), in particular for sound absorption, with a foamed material element (2) attached to a wall element (3) which is preferably reverberant, the foamed material element (2) having a skin-like covering (5) on the side facing away from the wall element (3). The foamed material element (2) is perforated, the foamed material element (2) is also covered on both sides with an air-impermeable plastic sheeting (5) or (6) respectively which also covers the perforated areas (holes 4), and the foamed material element (2) is installed so that it runs at least in part at a distance (a) from the wall element (3).

Abstract: A heat shield formed of composite layers of reflective metallic foil, heat insulating fibers and a non-electrically conducting sheet molding compound which are deformed to the general shape of an operating apparatus. The shield is then clamped about the operating apparatus in spaced relationship between the operating apparatus and a high temperature heat source to prevent heat radiation to the operating apparatus.

Abstract: A cast oil pan, which is reversible for front and rear sump applications, including an integral suction passage which extends the length of the pan and has outlets at either end, the suction passage including a screened intake seated in the sump area of the pan. Preferably, the bottom surface of the sump area is depressed to create a drain passage beneath the suction passage, the drain passage and bottom surface of the suction passage thereabove having aligned drain ports which are accommodated by a single plug to provide for complete drainage of the pan.

Abstract: Disclosed herein is marine apparatus comprising a boat including a hull, an outboard motor including a propulsion unit having a rear side and mounted on the hull for pivotal movement relative thereto between a trimmed-in position, a tilted-up position, and a trimmed-out position between the trimmed-in position and the tilted-up position, a cover which extends above the propulsion unit and which is mounted on the hull for movement relative thereto about an axis located forwardly of the rear side of the propulsion unit and between a lower position wherein the cover affords movement of the propulsion unit between the trimmed-in position and the trimmed-out position, and an upper position wherein the cover affords movement of the propulsion unit to the tilted-up position, and engaging surfaces on the motor and on the cover for moving the cover from the lower position to the upper position in response to movement of the propulsion unit from the trimmed-out position to the tilted-up position.

Abstract: A number of embodiments of cylinder head constructions for internal combustion engines, wherein the intake and exhaust passages extend through the cylinder head and terminate in the respective upper and lower surfaces of the cylinder head so as to simplify machining. A number of variations and manifolding arrangements are also disclosed so as to permit the installation of the engine into an engine compartment and to provide a compact construction.

Abstract: An engine housing for a vertical crankshaft engine may be directly mounted to a standard generator, pump, or other device without modifying the device housing. The engine housing has a plurality of raised mounting bosses that are used to attach the device housing to the engine housing. If the engine housing has an oil slinger well, the raised mounting bosses extend from the engine housing surface a sufficient distance to provide clearance for the oil slinger well. The engine housing also has a pilot that either receives an adapter ring or a portion of a device pilot to maintain the concentricity between the engine crankshaft and the device shaft, as well as the proper alignment between the engine housing and the device housing.

Abstract: A conventional internal combustion engine oil pan having a throughbore which is sealingly covered by a gasket and plate mounted over the throughbore and fixed thereto with threaded fasteners. A method for installing the engine plate is also provided.

Abstract: A lubricating-oil device for an internal combustion engine having two cylinder banks and a lubricating oil circuit with a main oil passage in each cylinder bank comprises a casing cover which is mounted on the front of the engine and includes a heat exchanger and an oil filter with all required communication passages for the oil and a supply passage which interconnects the main oil passages in the cylinder banks and which is in communication with the oil filter outlet for concurrently supplying filtered oil from the oil filter to both main oil passages.

Abstract: A vehicle oil pan assembly which is acoustically insulated for noise reduction includes an oil pan having a normal configuration with a base and enclosing sidewalls and further including a peripheral flange which is disposed adjacent an upper edge of the sidewall and which is used to attach the oil pan to the vehicle engine. In order to insulate the oil pan so as to reduce any noise which may otherwise be transmitted by the oil pan, a noise reducing/sound deadening enclosure is attached to the oil pan. In order to facilitate the attachment of the enclosure to the oil pan, a plurality of support brackets are welded to the oil pan and each bracket includes a plurality of support tabs. The noise-reducing enclosure is arranged with an outer skin and a foam isolation layer and the outer skin is molded so as to include a plurality of latching portions. The final component in the attachment system is a plurality of spring clips. There is one tab for each latching portion and one clip for each tab.

Abstract: A self aligning gasket having holes for passage of securing devices such as bolts, for joining parts together with the gasket positioned in between. A plurality of alignment pins are integrally attached to a fragile connective member to edges of a plurality of the holes formed through the gasket. The pins are installed through corresponding clearance holes in the parts to be joined. Once the parts are secured together, the pins are removed by breaking or cutting the fragile connective members, exposing the corresponding part clearance holes, making them available for their originally intended use.

Abstract: An oil pan for an internal combustion engine is made of cast aluminum alloy and has a first flange for attachment to the cylinder block and a second annular flange for attachment to the transmission case. Access holes near a bottom end of the second annular flange allow access to the heads of mounting bolts extending through the first flange. The first flange can be securely clamped to the opposing mounting of the cylinder block because all of the mounting bolts can directly clamp the first flange onto the mounting surface. Annular ribs surround the access holes and are connected together by a connecting rib so as to ensure a sufficient rigidity of the second flange. As a result, the sealing performance can be readily ensured and a vibration free power structure can be achieved.

Abstract: A hand-held tool such as a chain saw has a housing and a combustion engine enclosed in the housing. The working tool is driven by the combustion engine. An air filter box has a filter element for dividing the filter box into a dirt room and a clean room. The air filter box is closed off by a lid. A suction channel connects the clean room to the combustion engine. An air inlet channel for guiding dirt-laden air into the dirt room of the air filter box is provided. The air inlet channel extends substantially straight and upwardly. A suction tube is connected to the suction channel and projects into the clean room for extending the suction channel. The air inlet channel is located in the lid and extends substantially transverse to the suction tube.

Abstract: The compact electrical generator set has separate cooling airflows for the cylinder of the driving internal combustion engine, for the electrical generator, and for the crankcase of the internal combustion engine and the general interior of the enclosure of the electrical generator set. An optional fourth cooling airflow is dedicated to the oil cooler of the driving engine. Providing separate airflows allows to reduce the size of the enclosure. Noise generated by the engine exhaust is reduced by enveloping the exhaust gases with cooling air at the location were the exhaust gases exit the enclosure.

Abstract: A sealing assembly for use with an internal combustion engine includes a gasket of elastomeric material inserted within a groove formed in the surface of an engine part. The gasket has an anchoring portion which fits within the groove and a sealing portion extending outside of said groove. The bottom, side and top walls of the groove form a retaining portion which is at least 5% larger than the anchoring portion of the gasket at the time of assembly. The anchoring portion may expand and fill the retaining portion of the groove upon exposure to the engine fluids. At least one top wall of the retaining portion of the groove opposes a shoulder of the anchoring portion of the gasket at an interior angle of not more than about ninety degrees.

Abstract: A number of embodiments of engine construction having chain-driven overhead camshafts closed by a timing case cover and which timing case cover forms at least in part a coolant pump to the engine. Various arrangement for circulating the liquid coolant through the engine and an oil cooler mounted at the base of the engine are disclosed.

Abstract: A cover (10) is for use on a multi-cylinder overhead camshaft engine (20) having a pair of projecting members (112, 120). The cover (10) has a plurality of walls (300-308) for intercepting oil sprayed from the camshaft (80) of the engine. A pair of tubular projections (328, 330) connected with one wall (300) of the cover are engageable in a press fit relationship with the projecting members to support the cover in a position adjacent to the camshaft. A plurality of ribs (310-324) are disposed generally above the camshaft and extend parallel to the camshaft for catching and collecting oil sprayed from the camshaft and for dripping the oil down onto the camshaft. A W-shaped rib (326) on the inside of the cover collects oil flowing along the inside of the cover. The oil drips down from points (476, 486) of the W-shaped rib to lubricate selected portions (180, 206) of the engine. A multi-cylinder cover assembly (42, 60) encloses a plurality of the covers (10).

Abstract: A casing cover for an internal combustion engine with an engine casing having two cylinder banks is mounted on one end of the engine casing and includes an oil cooler, an oil filter, an oil filter bypass arrangement and also a transverse cooling water passage in communication with main cooling water passages extending along the cylinder banks and a transverse oil passage in communication with main oil passages also extending along the cylinder banks, and comprises three adjacent but separate functional areas, a first lowermost area which includes the lubricating oil passages leading to and from the oil cooler, the oil filter and the main oil passages, a second functional area which includes a cooling water space receiving the oil cooler and is disposed above the first functional area and a third functional area which is disposed next to the second functional area and includes cooling water return passages receiving the cooling water from said cylinder banks.

Abstract: A method of making an engine transmission bellhousing includes the steps of making the pattern for sandcasting a bellhousing having an engine attaching flange portion shaped to cover the engine bolt holes in a plurality of different engines, and making a mold using the pattern for sandcasting a bellhousing. Then selecting an aluminum alloy having the strength and characteristics selected to eliminate a bellhousing flexplate, which aluminum alloy includes aluminum alloyed with either zinc or silicon and selected other elements in lesser quantity and then casting the engine and bellhousing in the sand mold made with the bellhousing pattern.

Abstract: An oil pan for a combustion engine includes two extrusions which are welded to one another so as to form an elongated chamber. The ends of the chamber are closed by covers. At least two partitions are disposed one above the other inside the chamber. The partitions extend transversely of the chamber and are carried by holders provided on the internal surfaces of the extrusions. Each of the partitions has an oil deflecting portion as well as two flat projections which protrude to opposite sides of the respective oil deflecting portion and serve to connect the partitions to the holders. The projections of each partition define a horizontal support plane for the respective partition while the oil deflecting portions define vertical surfaces for damping oil surges.

Abstract: An oil pan for an internal combustion engine includes an outer shell made of metal plate an includes on at least a bottom surface of the outer shell and inner pan separate from the outer shell. The bottom of the oil pan includes a deep portion and a shallow portion and a baffle plate is disposed over the inner pan. The inner pan settles on the inner surface of the outer shell amidst the oil contained in the oil pan, thereby forming a layer of oil between the outer shell and the inner pan. Thus, oil flow is not impeded and vibration of the oil pan is significantly reduced. In addition, wall portions of the inner pan are made to be deformable so as not to cause strong impact to other portions of the oil pan structure or to engine components.

Abstract: An internal combustion engine comprises a cylinder block, an upper crankcase, and a lower crankcase, which comprises an inner casing including an outer wall and the lower main bearing housings, and an outer casing, with a space therebetween. The outer casing has a sump mounted on it. Oil drainage passages from the cylinder head face of the cylinder block extend down to meet a pair of longitudinal passages from which oil drainage ports open into the space between the inner and outer casings. These passages add significantly to the stiffness of the engine.

Abstract: The structure of a head cover mounted on a cylinder head of an engine, wherein an upper plate portion of the head cover is dented at respective regions corresponding to mounting locations of a plurality of spark plugs, whereby the head cover has the upper plate portion formed with dented grooves; the dented grooves have bottom plate portions defined with spark plug insertion-through-portions; the upper plate portion is formed with coil-mounting portions for ignition coils on both sides of the spark plug insertion-through-portions in the longitudinal direction parallel to the axis of a crank shaft; one side of the upper plate portion, which is defined with the coil-mounting portions, in a transverse direction perpendicular to the axis of the crank shaft, is dented to provide communication grooves which intercommunicate the dented grooves.

Abstract: A vehicle oil pan assembly which is acoustically insulated for noise reduction includes an oil pan having a normal configuration with a base and enclosing sidewalls and further including a peripheral flange which is disposed adjacent an upper edge of the sidewall and which is used to attach the oil pan to the vehicle engine. In order to insulate the oil pan so as to reduce any noise which may otherwise be transmitted by the oil pan, a noise reducing/sound deadening enclosure is attached to the oil pan. In order to facilitate the attachment of the enclosure to the oil pan, a plurality of support brackets are welded to the oil pan and each bracket includes a plurality of support tabs. The noise-reducing enclosure is arranged with an outer skin and a foam isolation layer and the outer skin is molded so as to include a plurality of latching portions. The final component in the attachment system is a plurality of spring clips. There is one tab for each latching portion and one clip for each tab.

Abstract: A high horsepower internal combustion engine has an elongated block that is flexible during engine operation and an oil pan having sidewalls and is connectable to the block and flexible therewith. The oil pan has a plurality of baffles that are positioned within the oil pan, connected thereto at spaced apart locations and each have a flexible portion between the connecting location and the body of the baffle.

Abstract: This invention is directed to multi polymer structures for internal combustion engines, as well as structures for other vehicle drive train parts. For example, a valve rocker cover for an internal combustion engine in accordance with this invention is a composite of at least two different molded thermoplastic resins, which structure comprises a valve cover body molded of a polybutylene terephthalate resin and a sealing flange molded of a polyetherimide resin, with both parts in a bonding relationship. The valve rocker cover can also have attached to the underside a sealent so as to provide a seal between the valve cover and engine block when so assembled. The method of producing a composite in accordance with this invention is either insert molding or coinjection molding.

Abstract: An engine cover assembly for use in an internal combustion engine. The engine cover includes a composite plastic body and low creep material for the flange section of the engine cover. The low creep material allows for a low incident of creep at the bolts which secure the engine cover to the head of the engine. This insures the bolts will not loosen due to the degradation of the material to which the bolt is tightened. A mechanical or chemical lock is used to secure the plastic cover to the low creep material flange portion of the engine cover, The engine cover reduces the weight and the engine noise associated with the internal combustion engine.

Abstract: An oil seal, and in combination therewith a housing having a bore with a non-continuous groove. The oil seal has a locking or retention rib held within the non-continuous groove and a second sealing rib in compression fit against the sealing surface of the bore.

Abstract: An internal combustion engine (10) is designed with a cylinder section (11) which is pivoted on a crankcase section (13) to provide different compression ratios. The crankcase section (13) is provided with raised lateral walls (21, 22, 24, 25) with upper surfaces (82-85), which lie in the same plane and thereby allow simple assembly of a seal (34) between the cylinder section (11) and crankcase section (13). The lateral walls (21, 22, 24, 25) also enable auxiliary devices for the engine to be easily secured without having to allow for the mobility of the cylinder section (11) relative to the crankcase section (13).

Abstract: A dual cam cover has a molded housing made, preferably, of a thermoset polyester composite material replacing an aluminum casting. An integral stiffening bar added between raised cam chamber walls includes retaining slots for holding associated spark plug wires. Peripheral mounting bosses include cylinder like angled ribs for sturdy support with a pleasant appearance. Isolated mounting screws combine with resilient gaskets in the peripheral flange and around central spark plug and fastener openings to provide sealing and mounting isolation. Improved oil separators include one piece metal baffles with formed drain openings. A bushing and a threaded insert are molded in for mounting a vent tube and an accessory.

Abstract: An outer cover member of a plastic rocker cover has a top wall, a peripheral wall and a partition wall cooperating with the top wall and the peripheral wall to define therebetween an oil-gas separating chamber. The peripheral wall has a plurality of flanged portions at which the rocker cover is to be bolted to a cylinder head. The outer cover member further has a plurality of resiliently deformable buffer walls integral with a top wall of the outer cover member and depending therefrom so as to be spaced inward from the flanged peripheral wall portions. The partition member is secured to lower ends of the buffer walls so that oil-gas separating chamber is partly defined by the buffer walls. The buffer walls are resiliently deformable to absorb thermal expansion and contraction of the partition member.

Abstract: A flathead adaption system for an engine adapts the engine to look like a 1950's flathead engine. First the existing valve cover is removed from the engine. Thereafter, an adapter member is mounted at a valve cover opening from which the valve cover was removed. A rectangular plate-shaped flathead member is mounted to the top surface of the adapter member covering over the valve cover opening. The flathead member is provided with a plurality of non-energized spark plugs. When one or more of these non-energized spark plugs is removed, the resulting aperture is then used for pouring oil into the engine in place of the oil filling aperture in the valve cover which was removed.

Abstract: An oil pan is provided with a partition member so as to be divided into a main chamber and an antechamber. A vertical wall of the partition member is provided at a lower region thereof with first holes adjacent to an opening of a draft tube of an oil pump and at an upper region thereof with second holes in the vicinity of an oil level. In a state of warming up following the starting, since the oil temperature is low and the viscosity of the oil is large, the oil in the antechamber cannot pass through the first holes. Accordingly, only the oil in the main chamber a quantity of which is small is circulated through the engine by the oil pump, thereby warming up the engine quickly. Low temperature oil in the antechamber is interchanged with the oil in the main chamber little by little through the second holes, so that the temperature thereof is raised gradually.

Abstract: A one-piece valve cover product for use on an internal combustion engine having an engine cylinder head, said cover product including dome-like upper portion which acts as a cover over the cylinder head area of the engine, a peripheral flange portion adapted for sealing engagement to the cylinder head, a plurality of apertures through said flange portion through which a plurality of fasteners can be inserted to secure said cover product in sealing engagement to the cylinder head, said valve cover including in an upper portion thereof a molded or cast conduit passageway member formed as part of the valve cover itself, said passageway member extending inside the cover and being adapted to receive an air/oil vapor mixture associated with operation of the engine and to condense oil out of said air/oil mixture, at least one or more apertures located in a lower part of that passageway member to permit the oil droplets which are condensed, to drain back into the engine, and wherein said valve cover is formed from a

Abstract: In a V-type internal combustion engine, one bank of a cylinder block having cylinders which are offset more rearward of the engine than those of the other bank. A water pump has a pump housing installed on a front end of said one bank to define therebetween a pump chamber. The cylinder block has at a front end portion midway between the banks a coolant distributing chamber communicating with an outlet port of the pump chamber. The cylinder block has at the banks water jackets which are formed with, at respective front end portions by the side of the most forward ones of the cylinders, inlet ports opening laterally of the engine and communicating the coolant distributing chamber.

Abstract: A new elastomeric grommet-fastener assembly for use in connection with first and second apertured workpieces, for example in connecting a valve cover to an automotive engine block, with the fastener assembly being comprised of a fastener with clamping surface thereunder, a shank, and a reduced diameter entry portion; a washer member including a radial flange portion and an axially extending washer sleeve, with the washer means being telescopically positioned on the fastener shank; and an elastomeric grommet means, being molded from an elastomer, and having an axially extending sleeve portion, and a radial rim portion extending laterally from an upper part of the sleeve portion, with said grommet being telescopically positioned over the washer; and the sleeve of said washer having at least one or more holes therethrough such that the molded grommet has a portion of its elastomer protruding through to the inside of the washer sleeve, thereby enabling the washer with its associated grommet member to be captured

Abstract: A skirt section of the cylinder block is shortened to the height of the rotational center of the crank shaft. To the bottom end of the skirt section is the lower cylinder block whose bottom end is coupled to the oil pan. The inner space of the lower cylinder block section is divided by plural partition walls extending transversely between the side walls of the lower cylinder block section. A bearing cap supporting the crank shaft has a boss section projecting transversely and a threaded hole is formed in the boss section. Further, the bottom end of the bearing cap has a threaded hole having an opening facing bottom. The lower cylinder block section is further provided at its side wall with a hole through which the side portion of the bearing cap is connected to the side wall of the lower cylinder block section. The bottom end of the bearing cap is connected to the side wall of the lower cylinder block section.

Abstract: A front cover has at a front surface central portion thereof an integral mounting seat for installation of a mounting bracket and at a rear surface central portion thereof an integral boss adapted to extend between the mounting seat and a front end of a cylinder head and cylinder block assembly. The boss is fastened together with the mounting bracket to the front end of the cylinder head and cylinder block assembly. A resilient sealing member is interposed between the peripheral end of the front cover and the front end of the cylinder head and cylinder block assembly such that the front cover is supported rigidly at the boss together with the mounting bracket and resiliently at the peripheral end upon the front end of the cylinder head and cylinder block assembly.

Abstract: A liquid-cooled internal combustion engine having a piston-controlled exhaust, particularly a two-stroke cycle internal combustion engine, is provided with a generator or a magneto-generator unit and with a lubricating oil pump. The cylinder head is provided with a cap, which defines a space for cooling liquid and extends over the cylinder approximately as far as to the exhaust port and at its end that is adjacent to the crankshaft has a sealing surface. In order to minimize the transmission of solid-borne sound and the radiation of sound, the cap and the cover for the oil pump are secured by means of collar screws, which have been tightened against a stop, and a washer provided with a vulcanization-bonded rubber layer is disposed between the head of each of said screws and the cap or the cover.

Abstract: An engine unit includes an engine and a power train having a transmission and the engine unit is mounted sideways on a vehicle body with the power train positioned rearward of the engine. The engine and the power train are housed in a single engine housing and an oil pan common to the engine and the power train is mounted on the lower side of the engine housing below the engine and the power train. The length of the oil pan in the transverse direction of the vehicle body is smaller than the engine housing and auxiliary mechanisms are disposed in the space on one side of the oil pan and below the engine housing.

Abstract: A valve rocker cover is securely mounted on a cylinder head of an internal combustion engine. The valve rocker cover includes a rocker cover main body made of a plastic and of a generally upturned vessel shape so as to be opened at its bottom end. The main body includes a roof section which is formed with a plurality of openings through which metal pipe members extending from the cylinder head are respectively disposed. A plurality of annular oil seal members are disposed coaxial respectively with the openings and made of an elastomeric material. The annular inward lip section of each seal member is in contact with the metal pipe member. A plurality of annular support members for the oil seal members are disposed coaxial respectively with the openings and made of a plastic. The annular outward section of the oil seal member is fixedly secured to the inner peripheral portion of each annular support member.

Abstract: A recreational boat having an engine housing for covering an inboard engine, and an arm pivotally mounted on the engine housing for movement between a lower position in which the arm is stored in an elongated recessed opening in the housing, and a raised position in which a portion of the arm is disposed above the engine housing, and a flexible fabric boat cover which overlies the boat and is supported by the arm in its raised position.