Patent ID: 6032331
Filing Date: 2000-03-07
Classification: E05C,E05F,E05Y,Y10T

Abstract:
A method for checking reciprocative devices (10) including door closer systems (10) comprising a rod (16) that functions reciprocatively from within a body (12) having a biasing means (11), that, upon extension of said rod (16) from within said body (12), said device (10) normally acting to control the reciprocation of said rod (16); said checking is performed frictionally by means of a checking mechanism (22) composed of a predetermined, hardened and tempered sheet metal gauge (37) for mounting axially (17) onto said rod (16), comprising an aperture configuration (26) bounded within a central structure (34) disposing a fulcrum locus (26-A) opposing a counter locus (26-B), both diametrically composed upon a common axis of symmetry (32) and each providing at least one substantial opposing friction point (28) for urging upon the surfaces (16-A) (16-B) of said rod (16) a substantial direct frictional pressure (29) created within an axial plane (30); said mechanism (22) further including at least one trigger appendage (38) angularly attached to said central structure (34) to form a fixated joint (42) projectable by projecting one axis (42-A) upon the face of said central structure (34), and projecting the other axis (42-B) from the origin of said fixated joint (42); said trigger appendage (38) disposing a trigger point (40) to abut against said body (12) upon a trigger plane (42-C) projected from the origin axis (42-B) and projected to the abutting trigger point (40); wherein said common axis of symmetry (32) coincides upon a diametric cross-section of said rod (16) engaged thereto, comprising the steps ofapplying a force (11-A) to cause the rod (16) to be at least partially extended from within said body (12), thereby creating a reciprocative counter-force (11-B);leveraging said mechanism (22) to pivotally engage (24) said rod (16) responsive to said trigger point (40) abutting said body (12), wherein said trigger plane (42-C) comprises the means to substantially vary as the abutting trigger point (40) also varies upon the surface of said trigger appendage (38), and wherein the distance from said trigger point (40) to a friction point (28) upon said fulcrum locus (26-A) comprises a substantially greater distance than the distance between the opposing friction points (28) within the loci (26-A) and (26-B);torquing said surfaces (16-A) (16-B) of said rod (16) between said opposing friction points (28) within the loci (26-A) and (26-B), to comprise a cross-sectional distance created between the points (28) which is substantially less than the cross-sectional diameter of said rod (16) upon said common axis of symmetry (32);urging said points (28) upon the rod surfaces (16-A) (16-B) wherein said direct frictional pressure (29) within said axial plane (30) is not in substantial linear alignment upon said common axis of symmetry (32);resisting the movement of said biasing means (11) normally acting to control the reciprocation of said rod (16), responsive to said direct frictional pressure (29) urged between said opposing friction points (28).