Patent · US Expired

Eyepiece and lens cap for a sighting telescope

US5020894A · kind A · utility

6Cited by

2References

3Claims

0Family size

Assignee

Carl Zeiss Stiftung · DE

Inventors

Adolf Weyrauch · Aalen, DE
Bernd Dörband · Aalen, DE
Ferdinand Schlipf · Aalen, DE

Key dates

Filing date	Jul 23, 1990
Grant date	Jun 4, 1991
Priority date	—
Expiry date	Jul 23, 2010

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF41G1/383
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Cover caps to protect the lens and eyepiece of a sighting telescope are resiliently connected by a pair of elastic bands. Each cap is provided with a pair of respective axially-oriented channels, each channel being larger at the end in proximity to the front of its respective cap, and the smaller end of each channel is proportioned to permit one end of one of the elastic bands to be threaded therethrough. Each end portion of each band is first threaded through a respective one of the channels, and then each end portion is folded over and secured to itself to form a thickened endpiece. Thereafter, each endpiece is retracted into its respective channel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.