Patent ID: 7448139

Claim:
A survey marker cap assembly ( 20 ) for placement on a survey stake comprising; a cylindrical body ( 22 ) having an upper portion ( 24 ) of a first diameter (d 1 ) and a lower portion ( 26 ) of a second diameter (d 2 ) smaller than said first diameter (d 1 ) and a conical section ( 28 ) interconnecting said upper and lower portions ( 24 , 26 ), said portions ( 24 , 26 ) presenting a bore ( 30 ), said cylindrical body ( 22 ) having a closed top ( 34 ) closing said bore ( 30 ), an independent circular disk ( 40 ) disposed over said top ( 34 ) and having a disk diameter (d d ) larger than said first diameter (d 1 ) of said upper portion ( 24 ), and a mechanical connection ( 36 ) for retaining said disk ( 40 ) on said top ( 34 ).