US3581736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrocardiograph electrode
Assignee: Individual
•
Filing: 1968-12-20
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Granted: 1971-06-01
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Expires: 1988-12-20
Abstract
Abstract An electrode for an electrocardiograph comprising a reinforced base sheet having the underside thereof coated with a pressure sensitive adhesive and protected by a thin layer of removable paper. A snap fastener comprising a male and female portion extends through the center of the base sheet with the male portion of the snap fastener being firmly attached to the base sheet. The contacting surfaces of the male and female portion of the snap fastener are provided with a plurality of alternating grooves and ridges to increase the contact area and to prevent relative rotation of the respective male and female portions. A screen or sponge is attached to the underside of the male portion of the fastener and may be the fastener and may be impregnated with an electrically conductive jelly. The female portion of the fastener is mounted into a housing designed for easy gripping with the fingers.
Inventors
- 👤 Ilias Zenkich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:00
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/271; A61B5/273; A61B5/274
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
201 words
An electrode for an electrocardiograph comprising in combination; a base sheet having the underside thereof coated with a pressure sensitive adhesive, a snap fastener comprising an electrically conductive male portion and an electrically conductive female portion, said male portion and said female portion having opposed contacting surfaces pressed into engagement with each other to provide an electrical connection therebetween, said male portion of said snap fastener being firmly attached to and having a shank portion and a portion thereof extending through the underside of said base sheet, conductive means secured to said male portion extending through the underside of said base sheet and adapted to be placed in contact with an object to be tested by said electrocardiograph, a housing partially surrounding and secured to said female portion of said snap fastener and adapted for easy manual gripping, said housing being oriented to permit said female portion to receive said male portion of said snap fastener, and said opposed contacting surfaces of said male and female portions of said snap fastener being provided with a plurality of closely spaced alternating grooves and ridges, said grooves and ridges on the shank portion of said male portion extending in a generally spiral direction.
Claim 2
Dependent Claim
201 words
An electrode for an electrocardiograph comprising in combination; a base sheet having the underside thereof coated with a pressure sensitive adhesive, a snap fastener comprising an electrically conductive male portion and an electrically conductive female portion, said male portion and said female portion having opposed contacting surfaces pressed into engagement with each other to provide an electrical connection therebetween, said male portion of said snap fastener being firmly attached to and having a shank portion and a portion thereof extending through the underside of said base sheet, conductive means secured to said male portion extending through the underside of said base sheet and adapted to be placed in contact with an object to be tested by said electrocardiograph, a housing partially surrounding and secured to said female portion of said snap fastener and adapted for easy manual gripping, said housing being oriented to permit said female portion to receive said male portion of said snap fastener, and said opposed contacting surfaces of said male and female portions of said snap fastener being provided with a plurality of closely spaced alternating grooves and ridges, said grooves and ridges on the shank portion of said male portion extending in a generally spiral direction.
Claim 3
Dependent Claim
18 words
The structure of claim 1 in which said grooves and ridges extend spirally radially along said contacting surfaces.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |