Method of making a pressure switch
Patent 4137116 Issued on January 30, 1979. Estimated Expiration Date: 
April 22, 1997. Estimated 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.
April 22, 1997. Estimated 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.Patent References 3398036 3540963 3616039 3617666 3718791 3741842 3749866 3830991 3920940 Method of manufacturing photographic film unit InventorAssigneeApplicationNo. 05/789807 filed on 04/22/1977US Classes:156/269, Of continuous or running length bonded web156/292, Of laminae having opposed facing areas out of contact156/301, Opposed laminae are running length webs156/302, Lamina is running length web156/324, Running or continuous webs of indefinite length200/85A, Seat operated200/86R, Treads29/622, Switch making29/825, Conductor or circuit manufacturing428/116, Honeycomb-like428/138, Including nonapertured component428/194, Comprising discontinuous or differential impregnation or bond428/200, With heat sealable or heat releasable adhesive layer428/209, Including metal layer428/319.1, Inorganic428/72, Including elements cooperating to form cells53/450Enclosing contents within progressively formed web meansExaminersPrimary: Massie, Jerome W.Attorney, Agent or FirmInternational ClassesH01H 3/14 (20060101)H01H 3/02 (20060101) AbstractA pressure switch and method of manufacture wherein a resiliently yieldable intermediate open layer is sandwiched between flexible conductive layers, all of which is enclosed between flexible outer layers, so that in the unstressed or relatively unstressed condition the contact layers are spaced apart by the intermediate layer, while flexure or other sufficient stressing of the assembly effects contact of the contact layers through the open intermediate layer. | |
