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US 4,728,270 AGranted
Apparatus and method for replacing apex seals in a rotary device
AssigneeTrochoid Power Corporation
InventorRalph M. Hoffmann
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AssigneeTrochoid Power Corporation
InventorRalph M. Hoffmann
Estimating the term…
A rotary device and method for replacing apex seals is provided. The rotary device comprises a housing having a peripheral wall surface and two inner side walls that define a chamber. A rotor is located within the chamber and rotates therein. The peripheral wall surface of the housing includes a plurality of slots having disposed therein an insert, a wave spring, and an apex seal. The apex seal extends radially outward from the slot and is spring biased by the wave spring that is sandwiched between the insert and apex seal. The side walls of the housing include spring biased button seals. The button seals are urged against a portion of the apex seal. A side wall of the housing includes a rotatable nut for relieving the spring pressure on the button seal and an aperture covered by a removable cap for accessing the insert member so that it can be removed. A method of replacing the apex seals is also provided.
A rotary device comprising a rotor, a housing having a cavity in which the rotor rotates, the cavity defined by an inner peripheral surface and two side walls, the inner peripheral surface including a plurality of slots having disposed therein an insert, wave spring, and apex seal, the apex seal extending radially outward from the slot and being spring biased by the wave spring, the wave spring being sandwiched between the apex seal and insert member, at least one of the side walls of the housing including an access aperture for accessing the insert, wave spring, and apex seal, the access aperture being covered by removable cap, the side walls also having apertures in which are disposed a plurality of spring biased button seals, the button seals being biased outwardly from the side walls against a portion of the apex seal, and at least one of the side walls further including means for relieving the spring pressure on the button seal, the means including a plate, located at one end of the aperture between the button seal and spring, and a rotatable bolt that causes the plate to move towards the button seal when the bolt is rotated in a first direction and causes the plate to be biased away from the button seal when it is rotated in a second direction.
A trochoidal rotary device comprising a housing having a cavity defined by an inner peripheral surface and two side walls, the inner peripheral surface including a plurality of slots having disposed therein an insert, an apex seal, and sandwiched therebetween a wave spring, the wave spring urging the apex seal radially outward from the slot, the side walls having disposed therein a plurality of spring biased button seals, the button seals being biased against a portion of the apex seal and rotor, at least one side wall includes a rotatable bolt for relieving the spring pressure on the button seal and an access aperture for accessing the insert, wave spring, and apex seal the access aperture being covered by a removable cap, the button seals being disposed in apertures in the side walls, a plate is located at one end of the apertures between the button seal and spring, the rotatable bolt causes the plate to move towards the button seal when the bolt is rotated in a first direction and causes the plate to be biased away from the button spring when the bolt is rotated in a second direction.
A method of removing an apex seal from a rotary device having a rotor and a housing, the housing having a cavity, in which the rotor rotates, defined by an inner peripheral surface and two side walls, the inner peripheral surface including a plurality of slots having disposed therein an insert, an apex seal, and sandwiched therebetween a wave spring, the wave spring urging the apex seal radially outward from the slot, the side walls including apertures having disposed therein a plurality of button seals, the button seals being spring biased by a spring outwardly from the side walls including means for releasing the spring pressure from the button seal, the means for releasing the spring pressure including a rotatable nut contacting a plate located at an end of the aperture of the side wall, and a removable cap that covers an aperture for accessing the insert member, and the housing including an outer wall having an access plate, comprising the steps of:
A method of replacing an apex seal in a rotary device having a rotor and a housing, the housing having a cavity, in which the rotor rotates, defined by an inner peripheral surface and two side walls, the inner peripheral surface including a plurality of slots having disposed therein an insert, an apex seal, and sandwiched therebetween a wave spring, the wave spring urging the apex seal radially outward from the slot, the side wall having apertures in which are disposed a plurality of button seals, the button seals being spring biased by a spring outwardly from the side walls against a portion of the apex seal, at least one of the side walls including a rotatable nut for releasing the spring pressure from the button seal, the rotatable nut contacting a plate located at an end of the aperture of the side wall, and a removable cap for covering an aperture for accessing the insert member, and the housing including an outer wall having an access plate comprising the steps of:
Dependencies are inferred from the claim text.