PATENT CLAIM ANALYSIS

Application Number: 15776954
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["114", "295000"]

Abstract:
An anchor booster, which belongs to the field of ocean engineering, is designed to increase the final penetration depth of the OMNI-Max anchor. The anchor booster is attached to the tail of the OMNI-Max anchor to increase its impact velocity in water and penetration depth in seabed. Moreover, the booster can also improve the directional stability of the OMNI-Max anchor during its free fall in water. After installation, the booster is retrieved by pulling its retrieval line up and can be used for the subsequent installation. The booster is comprised of a cylindrical shaft with three rear fins. The shaft is designed with an ellipsoidal tip and a contracted rear to reduce the drag force during free fall in water and dynamic installation in seabed. The shaft rear is set with three slots separated by 120° in plane thus the rear fins can be inserted into the slots to improve the directional stability of the hybrid anchor (i.e. the OMNI-Max anchor with a booster). The booster tip is fabricated with a cylindrical slot and the anchor tail has a compatible bar, such that the booster can be connected to the anchor tail by a shear pin. The booster geometry is simple, allowing for cost effective fabrication. With the aid of a booster, the final penetration depth and thus the holding capacity of the OMNI-Max anchor can be increased to a great extent. Therefore, the safety factor is increased or the total cost is reduced for the mooring system.

Claim (Index 5):
According to  claim 1 , the procedures of the booster ( 2 ) to increase the final penetration depth of the OMNI-Max anchor ( 1 ) are summarized as follows:\n (a) Insert the cylindrical bar of the OMNI-Max anchor into the slot located at the tip of the booster. Then fix the OMNI-Max anchor and the booster together by a shear pin. Note the shaft center of the OMNI-Max anchor must be in line with the shaft center of the booster. (b) The terminal velocity of the OMNI-Max anchor is increased by adding a booster. For anchor free fall in water, the terminal velocities for the OMNI-Max anchor and the hybrid anchor (i.e. the OMNI-Max anchor with a booster) can be expressed by equations (1) and (2), respectively. V T = ( m A - \u03c1 w \ue89e \u0398 A ) \ue89e g 0.5 \ue89e \u03c1 w \ue89e A p \ue89e C d ( 1 ) V T \u2032 = ( m A + m p - \u03c1 w \ue8a0 ( \u0398 A + \u0398 p ) ) \ue89e g 0.5 \ue89e \u03c1 w \ue89e A p \u2032 \ue89e C d \u2032 ( 2 ) Where V T , m A , \u0398 A , A p  and C d  are the terminal velocity, mass, volume, frontal area and drag coefficient of the OMNI-Max anchor, V\u2032 T , A\u2032 p  and C\u2032 d  are the terminal velocity, frontal area and drag coefficient of the hybrid anchor, m p  and \u0398 p  are the mass and volume of the booster, \u03c1 w  is the water density and g is the gravitational acceleration. The frontal areas of A p  and A\u2032 p  are the anchor projected areas perpendicular to the anchor shaft. The terminal velocity of the hybrid anchor is increased due to the added weight provided by the booster.\n (c) The final penetration depth of the OMNI-Max anchor is increased by adding the anchor booster. The equilibrium equations characterizing the dynamic installations of the OMNI-Max anchor and the hybrid anchor in seabed can be expressed by equations (3) and (4). \n m A \ue89e d 2 \ue89e z dt 2 = W s - F b - R f \ue8a0 ( F bear + F frict ) - F d ( 3 ) ( m A + m p ) \ue89e d 2 \ue89e z dt 2 = W s + W p - F b \u2032 - R f \ue8a0 ( F bear \u2032 + F frict \u2032 ) - F d \u2032 ( 4 ) Where z is the penetration depth from the mudline to the anchor tip at the moment of t, W s  and W p  are the submerged weight of the OMNI-Max anchor and the booster in water, F b , F bear  and F frict  are the soil buoyancy, soil end bearing resistance, soil frictional resistance on the OMNI-Max anchor, F\u2032 b , F\u2032 bear , and F\u2032 frict  are the soil buoyancy, soil end bearing resistance, soil frictional resistance on the hybrid anchor. Both the kinetic and potential energies are increased with the addition of the booster, thus the final penetration depth of the OMNI-Max anchor is increased.\n (d) After the installation of the hybrid anchor, the booster is retrieved by pulling its retrieval line up. When the uplift load is beyond the allowable force of the shear pin, the shear pin is broken off and the OMNI-Max anchor is left to remain in seabed. The booster can be re-used for the subsequent installation of the OMNI-Max anchor.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 93.0
- Lexical Diversity: 2.45455
- Patent Class: 114.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13641492', '10983914', '12663814', '14669505', '10541150']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7199188382893603
- 35 USC 102 Novelty (BERT): 0.4913689713866489
- Combined Prediction Score: 0.6970638515990891
- Mean Citation Score: 152.31496
- Max Citation Score: 156.54268000000005
- Similarity Product: 103.84900409988884

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

Dataset: test