Dividend checks continue to get fatter in Corporate America as more companies jack up their distribution rates.

Readers of the Income Investor newsletter can certainly appreciate that kind of thinking. Let's take a closer look at some of the companies that inched their payouts higher this past week.

Let's start with Rockwell Automation (NYSE: ROK). The industrial automation and information specialist is jacking up its quarterly dividend 21% to $0.425 a share.

"We remain committed to delivering shareowner value by investing in high-return growth opportunities and appropriately returning cash to shareowners," CEO Keith Nosbusch notes in the hike's press release.

Douglas Emmett (NYSE: DEI) is also returning more of its collected rent to its stakeholders. The REIT that buys into office and multifamily properties in premier submarkets in Southern California and Hawaii is boosting its quarterly rate by 30% to $0.13 a share.

Hotel-based REIT Hersha Hospitality Trust (NYSE: HT) is checking in with chunkier distributions. Its new quarterly payouts of $0.06 a share are a 20% improvement over its previous rate.

Finally we have Electro Rent (Nasdaq: ELRC) on the move, increasing its quarterly dividend by 33% to $0.20 a share. The company leases out electronic test equipment, personal computers, and servers. This is the second time that Electro Rent has juiced up its disbursements since initiating a payout policy four years ago.

These companies join dredging services provider Great Lakes Dredge & Dock (Nasdaq: GLDD), chipmaker Micrel (Nasdaq: MCRL), and financing specialist Triangle Capital (NYSE: TCAP) in propping up their yields.

Subscribers to the Income Investor newsletter can appreciate the companies sending more and more money to their investors. The newsletter singles out companies that are committed to growing their distributions with market-thumping results.

Want to see what is being recommended these days? Go ahead and give the newsletter service a shot with a 30-day trial subscription. Who knows? Maybe the next thing that will get hiked will be your interest.

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Longtime Fool contributor Rick Munarriz pays attention to yield signs. He does not own shares in any of the companies in this story. He is also part of the Rule Breakers newsletter research team, seeking out tomorrow's ultimate growth stocks a day early.