Abstract A scale has a balance lever arrangement, and a dashpot for damping the movements of the lever arrangement. The dashpot has an upright cylinder containing hydraulic fluid and provided at its upper open end with a cover through an opening of which a piston rod extends to the exterior, being there connected with the balance lever arrangement. In the interior of the cylinder a piston is connected with a piston rod. In normal damping operation the piston and piston rod can perform the strokes up to a maximum predetermined distance. When the balance lever arrangement is arrested, for storage or transportation, the piston and piston rod are forced to perform a movement greater than the aforementioned distance. The piston rod carries interiorly or exteriorly of the cylinder a sealing member which moves into abutment with the cover, closing the opening thereof to prevent storage of hydraulic fluid, when this greater movement is performed.
Inventors
👤 Martin Ziefle
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-07 10:33
CPC Classifications
G; G01; G01G; G01G23/00; G01G23/06; G01G23/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
193 words
In a scale, a combination comprising balance lever means; dashpot means for damping the movements of said balance lever means, said dashpot means comprising a hydraulic fluid-containing upright cylinder having an upper open end, a cover comprising an elastically yieldable diaphragm extending across said open end and closing the same, said cover having an opening, a piston rod slidably extending with clearance through said opening and having an outer end connected to said balance lever means and an inner end in said cylinder, and a piston fast with said inner end having freedom of movement to perform damping strokes axially of said cylinder towards and away from said cover; a sealing element mounted on said piston rod and spaced from said cover by a distance so selected that said sealing element does not contact said cover during said damping strokes of said piston, and arresting means for moving said balance lever means to and arresting it in an inoperative position, with concomitant movement of said sealing element so as to engage said cover and close said opening to prevent spillage of hydraulic fluid while said balance lever means is in said inoperative position.
Claim 2
Dependent Claim
193 words
In a scale, a combination comprising balance lever means; dashpot means for damping the movements of said balance lever means, said dashpot means comprising a hydraulic fluid-containing upright cylinder having an upper open end, a cover comprising an elastically yieldable diaphragm extending across said open end and closing the same, said cover having an opening, a piston rod slidably extending with clearance through said opening and having an outer end connected to said balance lever means and an inner end in said cylinder, and a piston fast with said inner end having freedom of movement to perform damping strokes axially of said cylinder towards and away from said cover; a sealing element mounted on said piston rod and spaced from said cover by a distance so selected that said sealing element does not contact said cover during said damping strokes of said piston, and arresting means for moving said balance lever means to and arresting it in an inoperative position, with concomitant movement of said sealing element so as to engage said cover and close said opening to prevent spillage of hydraulic fluid while said balance lever means is in said inoperative position.
Claim 3
Dependent Claim
34 words
A combination as defined in claim 1, wherein said sealing element is located outside said cylinder, and said piston is compelled to move inwardly away from said cover when said arresting means is operated.
Claim 4
Dependent Claim
53 words
A combination as defined in claim 1, wherein said sealing element is at least in part composed of elastically yieldable material and forms a collar surrounding said piston rod, said sealing element being located within said cylinder and said piston being compelled to move toward said cover when said arresting means is operated.