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

Let's take a closer look at some of the companies that inched their payouts higher this past week.

Let's start with Parker Hannafin (NYSE: PH). The motion and control technology specialist moved its quarterly disbursements 4% higher to $0.27 a share. Investors are being spoiled here, as this is Parker Hannafin's second uptick this year alone.

The Aflac (NYSE: AFL) duck is also quacking louder. The insurer's new payout rate -- $0.30 a share -- is 7% ahead of its previous disbursements. Aflac is also resuming its share repurchase program, something that it clearly takes seriously as it has bought back 232.1 million shares since 1994.

Green lawns aren't the only thing growing at Scotts Miracle-Gro (NYSE: SMG). The grass and garden care company doubled its rate last week. Shareholders will now be receiving $0.25 a share every three months.

Finally we have Connecticut Water Service (Nasdaq: CTWS) going with the flow. The water utility's new quarterly dividend will be $0.2325 a share. It may seem like a mere fractional upgrade from its previous $0.2275 rate, but Connecticut Water Service has now jacked up its yield in 41 consecutive years.

Companies are starting to return more of their money to their investors, and shareholders aren't likely to be complaining. Refined petroleum limited partnership Buckeye Partners (NYSE: BPL), pharmaceutical care specialist for the elderly Omnicare (NYSE: OCR), and industrial gavel slamming Ritchie Bros. Auctioneers (NYSE: RBA) all fortified their distributions in recent days. Buckeye has juiced up its dividend checks in each of the past 25 quarters!

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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Omnicare is a Motley Fool Inside Value recommendation. Aflac is a Motley Fool Stock Advisor choice. Ritchie Auctioneers is a Motley Fool Hidden Gems recommendation. Try any of our Foolish newsletters today, free for 30 days

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. The Fool has a disclosure policy.