The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1978
Filed:
Jul. 30, 1976
Dionys Hofmann, Darmstadt-Marienhohe, DE;
Gebr. Hofmann KG, Darmstadt, DE;
Abstract
A safety unit for latching against upward movement a spindle driven lift of the type having a lifting nut on which a lifting carriage guided in a column is supported and a safety nut mounted for movement on the spindle for guiding the column in the event of lifting nut failure with a pawl rotatably mounted adjacent the tooth spindle for rotating, urged by a spring, to a locking position preventing rotation of the spindle in one direction when a guide bolt extending through one of a pair of contiguous bores in the pawl having different diameters is shifted axially in response to lifting nut failure, the bolt having different diameter portions along its axis so that the shifting permits rotation of the pawl into its locking position.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile