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A rotary valve assembly for an internal combustion engine includes a rotatable tubular valve body having a pair of diametrically opposed fluid flow holes that are intermittently aligned with the intake and inlet port of the cylinder as the body rotates. The valve assembly is consequently closed and

A rotary valve assembly for an internal combustion engine includes a rotatable tubular valve body having a pair of diametrically opposed fluid flow holes that are intermittently aligned with the intake and inlet port of the cylinder as the body rotates. The valve assembly is consequently closed and generally blocks fluid flow to the cylinder when the holes of the valve body are not aligned with the intake and inlet port. The valve assembly includes a valve timing adjuster for permitting selective adjustment of the time during which the valve is open. The timing adjuster includes an inner cylindrical core and an intermediate sleeve positioned concentrically between the core and valve body. The core has a diametrically extending flow-through opening and the intermediate sleeve has a pair of diametrically opposed apertures. The engine is preferably provided with a similar rotary valve assembly in the exhaust. A unique rotary valve seal is also disclosed.

대표청구항 ▼

A rotary valve assembly for an internal combustion engine includes a rotatable tubular valve body having a pair of diametrically opposed fluid flow holes that are intermittently aligned with the intake and inlet port of the cylinder as the body rotates. The valve assembly is consequently closed and

A rotary valve assembly for an internal combustion engine includes a rotatable tubular valve body having a pair of diametrically opposed fluid flow holes that are intermittently aligned with the intake and inlet port of the cylinder as the body rotates. The valve assembly is consequently closed and generally blocks fluid flow to the cylinder when the holes of the valve body are not aligned with the intake and inlet port. The valve assembly includes a valve timing adjuster for permitting selective adjustment of the time during which the valve is open. The timing adjuster includes an inner cylindrical core and an intermediate sleeve positioned concentrically between the core and valve body. The core has a diametrically extending flow-through opening and the intermediate sleeve has a pair of diametrically opposed apertures. The engine is preferably provided with a similar rotary valve assembly in the exhaust. A unique rotary valve seal is also disclosed. ting position is a first feed-inhibiting position, the feeder further comprising at least a second perch coupled to the housing and configured to have at least a second landing portion move between a second feeding position and a second feed-inhibiting position relative to the housing. 8. The feeder of claim 7 wherein the second perch is configured such that the second landing portion can move between the second feeding position and the second feed-inhibiting position independently of the first landing portion moving between the first feeding position and the first feed-inhibiting position. 9. The feeder of claim 1 further comprising a sound-producing device coupled to at least one of the housing and the perch and configured to be actuated in response to the landing portion moving toward the feed-inhibiting position. 10. A bird feeder configured to hold bird feed and to provide access to the bird feed by birds, the bird feeder comprising: a housing; and a perch coupled to the housing and configured to have at least a landing portion of the perch move from a feeding position toward a feed-inhibiting position, different from the feeding position, relative to the housing, the perch being configured to have the landing portion provide support for a bird eating the bird feed while the perch is in the feeding position, the perch being further configured to be in the feeding position in the absence of an animal's weight being applied to the landing portion of the perch, and to have at least the landing portion move toward the feed-inhibiting position in response to application to the landing portion of at least an undesired weight; wherein the perch is configured such that landing portion of the perch will inhibit an undesired animal from using the landing portion for support while in the feed-inhibiting position; and wherein the perch comprises a mounting member adapted to fixedly couple to the housing, a spring, and a landing member having the landing portion and being pivotally coupled to the mounting member, the spring being disposed to bias the landing member away from the mounting member toward the feeding position. 11. The feeder of claim 10 wherein the mounting member is configured with teeth and is configured to be wedged into a receptacle provided by the housing. 12. A bird feeder configured to hold bird feed and to provide access to the bird feed by birds, the bird feeder comprising: a housing; a perch coupled to the housing and configured to have at least a landing portion of the perch move from a feeding position toward a feed-inhibiting position, different from the feeding position, relative to the housing, the perch being configured to have the landing portion provide support for a bird eating the bird feed while the perch is in the feeding position, the perch being further configured to be in the feeding position in the absence of an animal's weight being applied to the landing portion of the perch, and to have at least the landing portion move toward the feed-inhibiting position in response to application to the landing portion of at least an undesired weight; a top; wherein the perch is slidably coupled to the housing and is fixedly coupled to a top, the top providing an opening through which birds can access the bird feed, the top being configured such that the opening substantially closes to inhibit access to the bird feed when the perch moves to the feed-inhibiting position; and wherein the top defines a plurality of openings, wherein the perch comprises a platform coupled to a corresponding plurality of landing members and the housing defines a corresponding plurality of slots configured to receive the landing members as the landing members move from respective feeding positions toward respective feed-inhibiting positions, and wherein the housing and the top move relative to each other to substantially close the plurality of openings when the landing members move from respective feeding positions toward respective feed-inhibiting positions. 13. A bird feeder for providing access to bird feed by birds and inhibiting access to the bird feed by undesired animals, the bird feeder comprising: a housing including a base portion and a top portion, the housing being configured to contain bird seed and provide access by birds to the bird seed, the housing providing a recess; and perch means, coupled to the housing, for providing support to a bird to access the bird seed and for moving at least a support portion between a feeding position and a feed-inhibiting position in response to application of an undesired weight to the support portion to at least one of inhibit an undesired animal from using the support portion for support to access the bird feed while in the feed-inhibiting position and inhibit access through the housing to the bird feed, the perch means being configured to have at least a portion of the perch means that is disposed externally to the housing while in the feeding position be received by the recess while in the feed-inhibiting position. 14. The bird feeder of claim 13 wherein the support portion moves from being substantially perpendicular to gravity, with the feeder in use, while in the feeding position toward being parallel to gravity when moving toward the feed-inhibiting position. 15. The bird feeder of claim 13 wherein the support portion of the perch means is spring-biased toward the feeding position. 16. A bird feeder for providing access to bird feed by birds and inhibiting access to the bird feed by undesired animals, the bird feeder comprising: a housing including a base portion and a top portion, the housing being configured to contain bird seed and provide access by birds to the bird seed; and perch means, coupled to the housing, for providing support to a bird to access the bird seed and for moving at least a support portion between a feeding position and a feed-inhibiting position in response to application of an undesired weight to the support portion to at least one of inhibit an undesired animal from using the support portion for support to access the bird feed while in the feed-inhibiting position and inhibit access through the housing to the bird feed; wherein the perch means comprises a retractable cord coupled to the support portion. 17. A bird feeder for providing access to bird feed by birds and inhibiting access to the bird feed by undesired animals, the bird feeder comprising: a housing including a base portion and a top portion, the housing being configured to contain bird seed and provide access by birds to the bird seed; and perch means, coupled to the housing, for providing support to a bird to access the bird seed and for moving at least a support portion between a feeding position and a feed-inhibiting position in response to application of an undesired weight to the support portion to at least one of inhibit an undesired animal from using the support portion for support to access the bird feed while in the feed-inhibiting position and inhibit access through the housing to the bird feed; wherein the perch means comprises a sensor and an electrical release configured to allow the support portion to move in response to the sensor indicating application of the undesired weight to the support portion. 18. A movable perch replacement for use with a bird feeder including a base, the replacement comprising: a mounting member configured to be mounted to the base of the bird feeder; a spring; and a landing member pivotally coupled to the mounting member and biased by the spring away from the mounting member; wherein the spring is configured to support the landing member, while a bird stands on the landing member, in a substantially horizontal position and to allow the landing member to pivot toward a substantially vertical position in response to an undesired weight being applied to the landing member. 19. The perch replacement of claim 18 wherein the moun ting member is sized and shaped to fit into a receptacle of the base. 20. The perch replacement of claim 19 wherein the mounting member includes at least one barb configured to resist removal from the receptacle. 21. A bird feeder configured to hold bird feed and to provide access to the bird feed by birds, the bird feeder comprising: a housing; and a perch coupled to the housing and configured to have at least a landing portion of the perch move from a feeding position toward a feed-inhibiting position, different from the feeding position, relative to the housing, the perch being configured to have the landing portion provide support for a bird eating the bird feed while the perch is in the feeding position, the perch being further configured to be in the feeding position in the absence of an animal's weight being applied to the landing portion of the perch, and to have at least the landing portion move toward the feed-inhibiting position in response to application to the landing portion of an undesired weight; wherein the perch is configured such that landing portion of the perch will inhibit an undesired animal from using the landing portion for support while in the feed-inhibiting position; and wherein the landing portion is at least a portion of a spring and provides a substantially solid landing surface. 22. The feeder of claim 21 wherein the landing portion is an elongated portion of a torsion spring extending away from the housing. 23. The feeder of claim 21 wherein the housing provides a recess and the landing portion is configured and coupled to the housing such that at least a portion of the landing portion that is disposed externally to the housing while the perch is in the feeding position is received by the recess while the perch is in the feed-inhibiting position. 24. A bird feeder configured to hold bird feed and to provide access to the bird feed by birds, the bird feeder comprising: a housing providing a recess; and a perch coupled to the housing and configured to have at least a landing portion of the perch move from a feeding position toward a feed-inhibiting position, different from the feeding position, relative to the housing, the perch being configured to have the landing portion provide support for a bird eating the bird feed while the perch is in the feeding position, the perch being further configured to be in the feeding position in the absence of an animal's weight being applied to the landing portion of the perch, and to have at least the landing portion move toward the feed-inhibiting position in response to application to the landing portion of an undesired weight; wherein the perch is configured such that landing portion of the perch will inhibit an undesired animal from using the landing portion for support while in the feed-inhibiting position; and wherein the perch is configured and coupled to the housing such that at least a portion of the landing portion that is disposed externally to the housing while the perch is in the feeding position is received by the recess while the perch is in the feed-inhibiting position. 25. The feeder of claim 24 further comprising a spring coupled to the housing and the perch to bias the landing portion away from the recess provided by the housing. 26. The feeder of claim 24 wherein the housing Provides a slot substantially parallel to gravity, while the feeder is in use, as the recess. at least a portion of said back seam is refastenable. 30. The continuous process according to claim 28, wherein at least a portion of said back seam is non-refastenable. 31. The continuous process according to claim 12, further comprising the step of hemming at least a portion of said edge of said neck opening. 32. A continuous process for the manufacture of a garment comprising: a. providing a first web of fabric including opposing web side edges; b. providing a second web of fabric including opposing web side edges; c. aligning said first and second webs of fabric together in a side by side orientation defining an arrangement wherein one of said web side edges of said first web of fabric is adjacent one of said web side edges of said second web of fabric; d. fastening at least a portion of said adjacent web side edge of said first web of fabric to at least a portion of said adjacent web side edge of said second web of fabric in said side by side orientation, defining at least a portion of a center seam and a composite web of fabric having a pair of opposing web side edges; e. intermittently cutting said opposing web side edges of said composite web of fabric, defining pairs of opposing indentations in said opposing web side edges of said composite web of fabric; f. intermittently cutting said composite web of fabric, forming edges defining neck openings in said composite web of fabric wherein said neck openings are intermediate two pairs of said opposing indentations; g. cutting said composite web of fabric, defining discrete garment-sized pieces wherein each of discrete garment-sized piece of said composite web of fabric includes at least one said neck opening, a front panel having a pair of opposing garment side edges, a back panel having a pair of opposing garment side edges, a portion of said two pairs of said opposing indentations in said opposing web side edges of said composite web of fabric, a pair of sleeve flaps, two garment end portions, and a pair of opposing piece side edges wherein said opposing piece side edges of said discrete garment-sized piece are proximate a pair of opposing garment bottom edges of said garment; h. folding said discrete garment-sized piece of said composite web of fabric whereby one of said garment bottom edges of said pair of opposing garment bottom edges is brought into contact with other said garment bottom edge; and, i. fastening at least a portion of said pair of opposing garment side edges of said front panel to at least a portion of said pair of opposing garment side edges of said back panel to form a pair of garment side seams. 33. A continuous process for the manufacture of a garment comprising: a. providing a first web of fabric including an inner surface, an outer surface, and opposing web side edges; b. providing a second web of fabric including an inner surface, an outer surface, and opposing web side edges; c. aligning said first and second webs of fabric together in a side by side orientation defining an arrangement wherein one of said web side edges of said first web of fabric is adjacent one of said web side edges of said second web of fabric; d. fastening at least a portion said adjacent web side edge of said first web of fabric to at least a portion of said adjacent web side edge of said second web of fabric in said side by side orientation, defining at least a portion of a center seam and a composite