As the president and CEO of the Body Rest Mattress Co. in St. Petersburg, Fla., Calhoun and his wife, Emma, are struggling to keep their 28-year-old company from becoming another casualty of the Great Recession.

They've laid off half their employees. They've cut the hours and benefits of those who remained. They've even tapped their home equity to pump more money into the business.

Yet without a six-digit bank loan to see them through, the Calhouns and their 31 employees face a very uncertain future.

"We know what we're doing," said Calhoun. "We just ran out of capital. It's only through the grace of God that we're here right now. And I'm not the only one."

He's right. Across the country, thousands of small business owners are fighting for survival and hurting for cash after getting the cold shoulder from banks over loan requests.

The Troubled Asset Relief Program (TARP) poured hundreds of billions of dollars into big banks to help spur business lending during the recession, but the cash infusion hasn't prevented thousands of companies from closing their doors as banks have tightened their credit standards and purse strings.

The Obama administration is pushing a $30 billion Small Business Lending Fund to address the problem. The proposal, which passed the House of Representatives in June, would provide smaller community banks with government loans that become cheaper as the banks lend more money to small businesses.

Todd McCracken, the president of the National Small Business Association, said the plan should help.

"But it's not a silver bullet," he said. "There isn't a silver bullet."

Credit is essential for small businesses to expand their work forces, purchase equipment and property and cover daily operating costs. For much of the last decade, the nation's big banks were generous providers.

From June 2008 to June 2009, however, the "credit crunch" was in full effect, as small business loan balances fell 9 percent at banks that have more than $100 billion in assets. Overall lending, by comparison, fell by only 4 percent over the same period, according to a recent report by the Congressional Oversight Panel.

In the second quarter of this year, small business loans fell to less than $670 billion from more than $710 billion in the second quarter of 2008, according to federal data.

That's bad news not only for business owners such as the Calhouns, but also for the economy. Small businesses -  generally described as those that have 500 or fewer employees - account for half the nation's private-sector employers and have created a majority of the new jobs since the mid-1990s.

If the economic recovery is going to take off, most agree that small business hiring will provide the lift. Without credit for small businesses, however, that recovery appears grounded indefinitely.

Adam Lapsevich, the president of Digital Design Video Productions in Chagrin Falls, Ohio, wants to hire a video editor, two salespeople, a social media specialist and a comptroller/project manager, but he needs a $100,000 loan to make it happen and the banks aren't biting.

"We've got talented people here in northeast Ohio who are looking for jobs. I'm talking $100,000, not a quarter of a million," Lapsevich lamented. "It's not like I'm selling hot dogs at a gas station. We've got a very hot product."

Digital Design creates online video-marketing campaigns for businesses. Eight months ago, at the height of the recession, Lapsevich was considering bankruptcy because business was down and the interest rates on the company's credit cards had reached 20 percent after several late payments. The company is now ready to expand, but banks may be holding Digital Design's recent struggles against it.

"I've weathered the storm and things are picking up, but in order for things to pick up a little faster, I need to get a couple of salespeople out there," said Lapsevich.

It's not uncommon for small companies to have cash-flow and credit problems, because they typically use their credit to exploit opportunities, said McCracken of the small business group. With stricter lending standards, however, a maxed-out credit line or a few late payments can make a small business appear to be a bad loan risk.

"All these external forces have combined to make some businesses look worse than they really are, and we have to make sure that this whole situation doesn't cause these otherwise successful businesspeople to fail. And it could," said McCracken.

Carl Calhoun, 61, left a career in banking to purchase his mattress company in 1982. Emma Calhoun, the company's vice president and chief financial officer, gave up a teaching career to help him run the business.

When he approached his bank of more than 20 years seeking a loan of $250,000 to $300,000, Calhoun said, he was told to put up some of his own money in order to increase sales. So he borrowed against his home equity, hired more salespeople and expanded his sales territory from the West Coast to the East Coast.

The plan worked, he said. Sales increased 30 percent. His customer base of hotels, universities, medical facilities and retail outlets increased 20 percent.

To maintain the new accounts, however, he needed the loan to pay his beefed-up sales staff and his suppliers. After waiting two months for a decision, said Calhoun, he was told that the local branch wouldn't decide on his request; corporate bank officials from out of state would make the call.

"They didn't know anything about our business," said Calhoun. "The local people knew us. They'd been dealing with us for over 20 years."

As more months went by without a decision, Calhoun lacked the cash to buy raw materials, which made it hard to fill orders.

Last year, the company sold 10,000 mattresses to colleges. "This year we should have done at least 12,000, but because were strapped for cash" they couldn't increase production, he said.

Calhoun also lost some accounts to lower bidders when he had to raise prices on clients who were slow to pay.

"If we had gotten the $300,000, we would have been in good shape to keep the accounts that we added on," said Calhoun. "In this economy who can say for sure, but we think our sales would have been up enough for us to cover our overhead and at least to break even by now."

The oil spill in the Gulf of Mexico didn't help. Some resort hotels in the South postponed orders when tourism faltered.

In the absence of loan money, the Calhouns have used their management skills and business savvy to maintain sales and keep their dream alive. They've stepped up sales to assisted living facilities, jails and cruise ships, and they're promoting a new line of non-allergenic, eco-friendly "green" mattresses.

Yet they still need working capital.

An equity investor has approached them about a cash infusion, but nothing has been finalized.