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Inventor

Siegfried Schumann

Inventor
Lohmar, DE

Overview

2→
Patents
1977–1994
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 2 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F16Dprimary
F16DCouplings for transmitting rotation50%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges25%
Y10TTechnical subjects covered by former us classification25%
PatentTitleYear
5,295,908'Spacing mechanism for the plates of a fluid friction coupling'19944,053,248'Coupling flange for a torque transmitting shaft'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to GELENKWELLENBAU GMBH (1)· patent assignee history
1977Based in Essen, DE· patent location history
1994Patents assigned to VISCODRIVE GMBH (1)· patent assignee history
1994Based in Lohmar, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GELENKWELLENBAU GMBH11977
VISCODRIVE GMBH11994
Locations
LocationPatentsSpan
Lohmar, DE11994
Essen, DE11977