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Title: Plural range pressure regulator construction or the like and the method of making the same or the like
Claims: I claim: 1. A method for making a plural range biasing construction comprising the steps of providing a housing means having a movable part, disposing biasing means in said housing means for acting on one side of said part to tend to move said part in one direction relative to said housing means, said biasing means comprising a plurality of separate spring means, causing each spring means to act on said part to provide one biasing range for said construction, storing one of said spring means completely in a storage space of said housing means so that the same will not act on said part whereby the remaining spring means acting on said part will provide another biasing range for said construction, forming said one spring means and said remaining spring means from coiled compression springs, causing said springs to be concentrically disposed and each having one end thereof operatively engaging said part when acting on said part to provide said one biasing range for said construction, and forming said storage space for said one spring means to be located in aligned relation with said remaining spring means and adjacent the other end thereof so as to be completely spaced from said part a distance at least equal to the length of said remaining spring means whereby said one spring means is out of operative engagement with said part and completely spaced therefrom a distance at least equal to the length of said remaining spring means when said other biasing range is being provided. 2. A method for making a plural range biasing construction comprising the steps of providing a housing means having a movable part, disposing biasing means in said housing means for acting on one side of said part to tend to move said part in one direction relative to said housing means, said biasing means comprising a plurality of separate spring means, causing each spring means to act on said part to provide one biasing range for said construction, storing one of said spring means in a storage space of said housing means so that the same will not act on said part whereby the remaining spring means acting on said part will provide another biasing range for said construction, forming said one spring means and said remaining spring means from coiled compression springs, causing said springs to be concentrically disposed when acting on said part to provide said one biasing range for said construction, forming said storage space for said one spring means to be located in aligned relation with said remaining spring means and adjacent one end thereof, closing one end of said storage space that is remote from said one end of said remaining spring means with a removable cover means of said housing means, and causing said one spring means to be stored in compressed relation between said cover means and said one end of said remaining spring means when being stored in said storage space. 3. A method for making a plural range biasing construction as set forth in claim 2 and including the steps of forming said cover means with a spring retainer, causing said one spring means to have one end thereof bearing against said spring retainer when the other end of said one spring means is acting on said part to provide said one biasing range of said construction, and causing said one spring means to be disposed between said cover means and said spring retainer when said one spring is stored in said storage space. 4. A method for making a plural range biasing construction as set forth in claim 3 and including the steps of forming said housing means with an internally threaded portion, threading an annular spring retainer to said threaded portion, causing said one end of said remaining spring means to bear against the same, and causing said one spring means to project through said annular spring retainer when said one spring means is acting on said part to provide said one biasing range of said construction. 5. A method for making a plural range biasing construction as set forth in claim 4 and including the step of threading said cover member to said threaded portion of said housing when closing said one end of said storage space. Other info: Inventors: Genbauff, Francis S. (Irwin, PA, US) Application Number: 470434 Filing Date: 1974-05-16 Publication_date: 1976-02-03 Assignee: Robertshaw Controls Company (Richmond, VA) Primary Class(es): 29/890.128 29/436, 29/454, 267/168 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Hall, Carl E. Assistant Examiner: Crane, Dan C. Attorney: Candor, Candor & Tassone |
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