US 12,451,263 B1
Nuclear gauge
William F. Troxler, Jr., Raleigh, NC (US); Wewage Hiran Linus Dep, Raleigh, NC (US); and Robert Ernest Troxler, Raleigh, NC (US)
Assigned to Troxler Electronic Laboratories, Inc., Research Triangle Park, NC (US)
Filed by Troxler Electronic Laboratories, Inc., Research Triangle Park, NC (US)
Filed on Oct. 2, 2023, as Appl. No. 18/479,512.
Application 18/479,512 is a continuation of application No. 17/549,341, filed on Dec. 13, 2021, granted, now 11,776,703.
Application 17/549,341 is a continuation of application No. 16/725,637, filed on Dec. 23, 2019, granted, now 11,200,994, issued on Dec. 14, 2021.
Application 16/725,637 is a continuation of application No. 14/214,409, filed on Mar. 14, 2014, granted, now 10,515,731, issued on Dec. 14, 2019.
Claims priority of provisional application 61/785,037, filed on Mar. 14, 2013.
Int. Cl. G21F 5/02 (2006.01)
CPC G21F 5/02 (2013.01) 14 Claims
OG exemplary drawing
 
1. A gauge comprising:
a detector;
a base that carries the detector;
a source housing carried by the base and defining a shield material circumferentially extending inwards; and
a source rod positioned within the housing and carrying a source that is translatable between a shielded position within the housing and a measuring position external of the housing, the source rod having a source shield on the top thereof and a shield material positioned-downwardly from the source such that the source is encapsulated when in the shielded position,
wherein an actuator is provided for translating the source from the shielded position to the measuring position and wherein the actuator is biased in a locked position in which the source is in the shielded position.