Surveying stake cap

Details Surveying stake cap Surveying stake cap

2007-02-28

2008-11-11

Fulton, Christopher W (Department: 2841)

Geometrical instruments

Straight-line light ray type

Rod or target

C052S103000

Reexamination Certificate

active

07448139

ABSTRACT:
A survey marker cap assembly (20) includes a cylindrical body (22) that has a top (34) with a connection shaft (38) that extends upwardly from the center of the top (34) through a hole (42) presented by a circular disk (40) that is placed upon the top (34) of the cylindrical body (22). The connection shaft (38) presents a dome (44) that extends radially over the disk (40) to secure the disk (40) upon the cylindrical body (22) and the dome (44) presents a female dimple (46) therein for centering with a plumb bob. The cylindrical body (22) and disk (40) consist of the same or different metals and the cylindrical body (22) includes threads (32) disposed there within for placement on a surveying stake.

REFERENCES:
patent: 191919 (1877-06-01), Bonner
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patent: 1660833 (1928-02-01), Cronjaeger
patent: 1950298 (1934-03-01), Frost
patent: 2181033 (1939-11-01), Watkins
patent: 3321834 (1967-05-01), Burns
patent: 3503163 (1970-03-01), Lutz
patent: 4254597 (1981-03-01), Feldman et al.
patent: 4549360 (1985-10-01), Allen
patent: D289859 (1987-05-01), Johnson et al.
patent: 5148641 (1992-09-01), Rushing et al.
patent: 2004/0168330 (2004-09-01), Kim

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