US 12,455,582 B2
Methods and systems for monitoring stress in a tendon in concrete post-tensioning
Felix Sorkin, Stafford, TX (US)
Filed by Felix Sorkin, Stafford, TX (US)
Filed on Feb. 25, 2025, as Appl. No. 19/062,914.
Application 19/062,914 is a continuation in part of application No. 19/013,470, filed on Jan. 8, 2025.
Claims priority of provisional application 63/557,821, filed on Feb. 26, 2024.
Claims priority of provisional application 63/618,598, filed on Jan. 8, 2024.
Prior Publication US 2025/0224747 A1, Jul. 10, 2025
Int. Cl. G05D 16/20 (2006.01); G01D 5/16 (2006.01)
CPC G05D 16/2066 (2013.01) [G01D 5/16 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A system for monitoring and controlling stress during tensioning tendons for concrete post-tensioning operations, comprising:
a hydraulic pump unit comprising:
a pump;
a hydraulic valve block, fluidly connected to the pump, comprising one or more ports, and a first sensor;
a display screen, mounted on the hydraulic pump unit, comprising a user interface configured for entry of one or more operating parameters for the hydraulic pump unit and configured to provide a display of the one or more operating parameters and output from the first sensor, comprising at least an amount of hydraulic fluid ported by the pump; and
one or more processors configured to perform calculations based on at least output from the first sensor and configured to provide an output of the calculations to the display screen; and
a post-tensioning jack fluidly coupled to the one or more ports of the hydraulic valve block such that the post-tensioning jack is configured to be operated by the hydraulic pump unit by hydraulic fluid ported through the hydraulic valve block and is configured for tensioning tendons for concrete post-tensioning; and
wherein the hydraulic pump unit is configured with an automatic shut-off capability, the automatic shut-off capability being triggered by a measurement, of the first sensor, of a predetermined amount of hydraulic fluid ported by the pump to the post-tensioning jack, and wherein further the hydraulic pump unit is also configured with an automatic start capability, the automatic start capability being triggered by a reset of one of the pump or the post-tensioning jack.