Apparatus for securing a manually operable setting element against rotation
AssigneeDanfoss A/S
InventorPeter E. Jacobsen
Life of this patent
Estimating the term…
Abstract
The invention relates to a security device which discourages tampering with the operating or control element of a manually settable device of the type which has a window through which the control element is accessed. The security device has the form of a strap which surrounds the housing of the manually settable device and covers the access window. The ends of the strap are permanently connected such that the strap would have to be destroyed to be removed.
Claims5
A tamper-proof adjustable control unit, comprising, a housing having a bore, a rotatably adjustable operating element rotatably mounted in said bore, said operating element presenting different control values for different circumferential settings thereof, a circumferentially extending aperture in said housing spaced axially between the ends of said operating element, setting means on said operating element accessible only through said aperture for rotating said operating element to a desired circumferential setting, strap means surrounding said housing and covering said circumferentially extending aperture, said strap means having permanently connectable ends to prevent removal thereof without being subject to destruction, and two inwardly extending projections on said strap means which engage the opposite ends of said circumferentially extending aperture to prevent lateral displacement of said strap means.
Dependencies are inferred from the claim text.