Did You Know...
...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!
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US Patent 3981645 - Displaced piston machine
US Patent Issued on September 21, 1976
Estimated Patent Expiration Date:
September 21, 1993Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
September 21, 1993Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA displaced piston engine which has at least one piston received between two guide members in a cylinder, the guide members having opposed guide surfaces contacting surfaces of the piston, the contacting surfaces of the piston and guide members being arcuately, coaxially curved, the guide members being coupled together in their relative oscillatory movement in the cylinder in dependent relationship to the stroke of the piston within the cylinder, and at least one of the guide members being attached directly or indirectly to a shaft for rotation therewith. | InventorApplicationNo. 05/493929 filed on 08/01/1974US Classes:418/161, Rotating418/164Rotary internal reacting memberField of Search418/58, Plural working members or chambers418/68, ROTATING INTERNAL MEMBER ROTATES AND OSCILLATES OR RECIPROCATES418/161, Rotating418/164Rotary internal reacting memberExaminersPrimary: Husar, C. J.Assistant: Smith, Leonard E. Attorney, Agent or FirmUS Patent References1887884International ClassesF04B 1/00 (20060101)F04B 1/10 (20060101) F01B 15/00 (20060101) F01C 1/00 (20060101) F01C 1/24 (20060101) |
