Measuring instrument

Details Measuring instrument Measuring instrument

2011-07-26

2011-07-26

Johnson, Amy Cohen (Department: 2841)

Geometrical instruments

Distance measuring

Opposed contacts

C033S679100, C073S828000, C116S208000

Reexamination Certificate

active

07984565

ABSTRACT:
A measuring instrument includes a ruler unit including an elongated plank portion extending along a first direction, two spaced apart positioning members disposed fixedly on the elongated plank portion, and a first measuring portion extending from the elongated plank portion along a second direction. A movable seat is movably mounted on the elongated plank portion and is movable relative to the elongated plank portion along the first direction between a reset position, where the movable seat abuts against one of the positioning members, and a normal position, where the movable seat abuts against the other one of the positioning members. The movable seat has a second measuring portion. A resilient member is mounted between the movable seat and the ruler unit, and biases the movable seat toward the normal position.

REFERENCES:
patent: 3190006 (1965-06-01), Madeira
patent: 4092781 (1978-06-01), Blake
patent: 4151652 (1979-05-01), Palma
patent: 4365420 (1982-12-01), Walden
patent: 5412878 (1995-05-01), Edman
patent: 5694697 (1997-12-01), Curtis
patent: 5983515 (1999-11-01), Brinker et al.
patent: 6098301 (2000-08-01), Kapphahn
patent: 6178824 (2001-01-01), Hayakawa et al.
patent: 6957498 (2005-10-01), Tsai

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