US 12,084,892 B2
Automatic blocking device for limiting a sliding movement of a first structure mounted adjacent to a second structure
Dalton Hege, Weyers Cave, VA (US); Jerry Blosser, Crimora, VA (US); Eric Stempihar, Rockingham, VA (US); Kennedy Sullivan Larramore, Staunton, VA (US); Randall Donn Senger, Mount Sidney, VA (US); and Joseph Wunder, Lexington, VA (US)
Assigned to A.G. STACKER INC., Weyers Cave, VA (US)
Filed by A. G. Stacker Inc., Weyers Cave, VA (US)
Filed on Apr. 13, 2022, as Appl. No. 17/719,816.
Claims priority of provisional application 63/182,875, filed on May 1, 2021.
Prior Publication US 2022/0412124 A1, Dec. 29, 2022
Int. Cl. E05B 47/00 (2006.01); E05B 63/22 (2006.01); E05B 65/00 (2006.01)
CPC E05B 47/004 (2013.01) [E05B 65/00 (2013.01); E05B 63/22 (2013.01); E05B 65/0021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lockout device for selectively blocking linear movement of a movable frame member relative to a fixed frame member, the lockout device comprising:
a lock tab pivotably mountable to the fixed frame member adjacent to the movable frame member and having a contact surface configured to slidably engage a slide surface of the movable frame member when the lock tab has a first orientation, the movable frame member including a stop surface at one end of the slide surface;
holding means for releasably holding the lock tab in a second orientation with the contact surface spaced from the slide surface; and
a body mountable to the movable frame member and configured such that movement of the movable frame member in a first direction relative to the fixed frame member causes the body to contact a first portion of the lock tab and pivot the lock tab into the second orientation and movement of the movable member in a second direction relative to the fixed frame member causes the body to contact a second portion of the lock tab and pivot the lock tab into the first orientation,
wherein the lock tab has a third orientation in which an end of the lock tab contacts the stop surface to prevent movement of the movable member in the second direction.