Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Statement of Cash Flows [Abstract]
Net income	$ 51,335	$ 47,610
Depreciation and amortization	5,157	8,937
Changes in assets and liabilities
Accounts receivable	6,746	21,852
Inventories	(13,437)	27,586
Prepaid expenses	9,425	13,696
Interest receivable		(256)
Accounts payable and accrued expenses	4,531	2,861
Total Adjustments	12,422	74,676
Net cash provided by operating activities	63,757	122,286
Cash flow from investing activities
Patents and Patents Pending	(3,382)	(9,082)
Purchase of equipment	(4,214)	(7,495)
Net cash used in investing activities	(7,596)	(16,577)
Increase in cash and cash equivalents	56,161	105,709
Cash Beginning Period	667,897	426,569
Cash Ending Period	$ 724,058	$ 532,278