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.

Date of Patent:
Jul. 12, 1988

Filed:

Nov. 06, 1986
Applicant:
Inventor:

Ulf Spiegelberg, Niederwil, CH;

Assignee:

Fritz Haug AG, St. Gallen, CH;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B28D / ;
U.S. Cl.
CPC ...
125 14 ; 60426 ; 5116592 ;
Abstract

The drive motor (1) drives a machining tool (2) which can be fed forwardly by means of a feed motor (3). Both motors (1, 3) are supplied with pressure fluid by the same hydraulic pump (4). A quantitative divider valve (5) divides the oil flow coming from the hydraulic pump, a control valve (24) controlling the flow of pressure fluid in the forward feed motor in such a way that the power output at the forward feed motor falls with increasing resistance at the machining tool, thereby providing for output-regulated operation of the machining tool. In the same way as the forward feed movement, the feed movement in respect of depth of the machining tool can also be produced by way of a depth feed motor (7).


Find Patent Forward Citations

Spiegelberg, Ulf. (1988). Apparatus for machining relatively hard building material (U.S. Patent No. 4756298). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4756298

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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