PATENT CLAIM ANALYSIS

Application Number: 15871035
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["200", "345000"]

Abstract:
A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.

Claim (Index 11):
A keyswitch, comprising:\n a keycap, comprising a triggering portion; a base, disposed under the keycap; a combination of springs, disposed between the keycap and the base, the combination of springs comprising a first spring and a second spring connected with the first spring in series, so that when the keycap receives a pressing force to move from an initial position toward the base, the keycap transfers the pressing force to the combination of springs, and the pressing force is then transferred to the base through the first spring and the second spring in order; and a switch, fixed on the base and comprising a fixed contacting part and a movable contacting part disposed neighboring to the fixed contacting part, the movable contacting part being a cantilever structure, the cantilever structure having a fixed end, a free end, and a contacting portion, the cantilever structure being fixed on the base through the fixed end, the contacting portion being located between the fixed end and the free end and being used for electrically contacting the fixed contacting part; wherein when the keycap moves from the initial position toward the base beyond a transition position, one of the first spring and the second spring is fully compressed to be solid such that a height of the compressed spring reaches a corresponding solid height, and the other one of the first spring and the second spring is not fully compressed and remains elastically deformable as the keycap moves toward the base further, the compressed spring whose height reaches the corresponding solid height comprises a plurality of elastic coils, and the plurality of elastic coils substantially stack vertically; wherein when the keycap is at the initial position, the triggering portion pushes against the movable contacting part through the free end to make the movable contacting part separated from the fixed contacting part, and when the keycap moves toward the base beyond a triggering position, the triggering portion and the movable contacting part are separate so that the movable contacting part moves to contact the fixed contacting part through the contacting portion.

Metadata:
- Claim Count in Document: 21.0
- Percentile: 86.0
- Lexical Diversity: 2.22535
- Patent Class: 200.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15422443', '15382728', '15642350', '14709489', '14472382']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7862369393131755
- 35 USC 102 Novelty (BERT): 0.5848688442202953
- Combined Prediction Score: 0.7661001298038875
- Mean Citation Score: 370.87348200000014
- Max Citation Score: 576.45483
- Similarity Product: 550.3409412114037

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

Dataset: test