PATENT CLAIM ANALYSIS

Application Number: 16443690
Application Type: Utility
Filing Date: 2019-06
Publication Date: 2019-10
Patent Classification: ["360", "294400"]

Abstract:
A PZT microactuator such as for a hard disk drive has a restraining layer bonded on its side that is opposite the side on which the PZT is mounted. The restraining layer comprises a stiff and resilient material such as stainless steel. The restraining layer can cover most or all of the top of the PZT, with an electrical connection being made to the PZT where it is not covered by the restraining layer. The restraining layer reduces bending of the PZT as mounted and hence increases effective stroke length, or reverses the sign of the bending which increases the effective stroke length of the PZT even further. The restraining layer can be one or more active layers of PZT material that act in the opposite direction as the main PZT layer. The restraining layer(s) may be thinner than the main PZT layer.

Claim (Index 3):
The microactuator assembly of  claim 1  further comprising:\n a third piezoelectric layer adjacent the second piezoelectric layer on a side thereof opposite the first piezoelectric layer; and \n a fourth electrode on a top side of the third piezoelectric layer, with the third electrode separating the second and third piezoelectric layers, there being no electrode between the third and fourth electrodes such that a distance between the third and fourth electrodes defines a thickness of the third piezoelectric layer, and such that a voltage applied across the third and fourth electrodes induces an electric field across the third piezoelectric layer thereby causing the third piezoelectric layer to expand or contract; \n wherein in response to the microactuator activation voltage, the second and third piezoelectric layers both tend to act in an opposite direction from an action of the first piezoelectric layer.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 100.0
- Lexical Diversity: 1.97436
- Patent Class: 360.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15055618', '14672122', '15055633', '14620120', '15227780']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7757188436079535
- 35 USC 102 Novelty (BERT): 0.6444401175291504
- Combined Prediction Score: 0.7625909710000732
- Mean Citation Score: 569.556448
- Max Citation Score: 596.5588
- Similarity Product: 589.9778565594198

Labels:
- Claim Label 101: 0
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test