Abstract: Instances of an application pod may be deployed to many different computing environments spanning native cloud installations, SaaS providers, and on-premise data centers. In order to make uniform changes to a distribution of an application pod, a lock manager may receive and schedule lock requests from many different types of utilities. These utilities may schedule exclusive locks on the application pod throughout the different computing environments, such that patches, updates, security protocols, and other changes may be instituted without interference from changes made concurrently by other utilities. The lock manager may schedule immediate and future locks, with lock extensions and lock overrides available for flexibility.

Abstract: A tractor scraper includes a tractor portion and a scraper portion. The scraper portion may include a bowl and an apron disposed adjacent a forward end of the bowl. The tractor scraper may also include a drive configured to raise the apron. The drive may include an actuator drivingly connected to a pinion. The drive may also include a rack connected to the apron and the pinion in a manner allowing the actuator to raise the apron by driving the rack with the pinion. The rack may be connected to the apron in a manner allowing relative movement between the rack and the apron.

Abstract: A tractor scraper includes a tractor portion and a scraper portion. The scraper portion may include a bowl and an apron disposed adjacent a forward end of the bowl. The tractor scraper may include a first drive configured to raise the apron. The first drive may include an actuator drivingly connected to a pinion. The first drive may also include a rack connected to the apron and the pinion in a manner allowing the actuator to raise the apron by driving the rack with the pinion. The rack may include a plurality of teeth facing rearward.